A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.
Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.
Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.
The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
The process of producing a form or impression made of metal or plaster using a mold.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Material from which the casting mold is made in the fabrication of gold or cobalt-chromium castings. (Boucher's Clinical Dental Terminology, 4th ed, p168)
A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.
Silver. An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.
A trace element that is required in bone formation. It has the atomic symbol Sn, atomic number 50, and atomic weight 118.71.
Characteristics or attributes of the outer boundaries of objects, including molecules.
Technique by which phase transitions of chemical reactions can be followed by observation of the heat absorbed or liberated.
Identification and measurement of ELEMENTS and their location based on the fact that X-RAYS emitted by an element excited by an electron beam have a wavelength characteristic of that element and an intensity related to its concentration. It is performed with an electron microscope fitted with an x-ray spectrometer, in scanning or transmission mode.
An oxide of aluminum, occurring in nature as various minerals such as bauxite, corundum, etc. It is used as an adsorbent, desiccating agent, and catalyst, and in the manufacture of dental cements and refractories.
Creation of a smooth and glossy surface finish on a denture or amalgam.
The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.
A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.
The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.
The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures.
An adhesion procedure for orthodontic attachments, such as plastic DENTAL CROWNS. This process usually includes the application of an adhesive material (DENTAL CEMENTS) and letting it harden in-place by light or chemical curing.
A rare, metallic element designated by the symbol, Ga, atomic number 31, and atomic weight 69.72.
Niobium. A metal element atomic number 41, atomic weight 92.906, symbol Nb. (From Dorland, 28th ed)
Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.
Stainless steel. A steel containing Ni, Cr, or both. It does not tarnish on exposure and is used in corrosive environments. (Grant & Hack's Chemical Dictionary, 5th ed)
Preparation of TOOTH surfaces, and of materials bonded to teeth or DENTAL IMPLANTS, with agents and methods which roughen the surface to facilitate adhesion. Agents include phosphoric or other acids (ACID ETCHING, DENTAL) and methods include LASERS.
Coating with a metal or alloy by electrolysis.
Occurs in seeds of Brassica and Crucifera species. Thiouracil has been used as antithyroid, coronary vasodilator, and in congestive heart failure although its use has been largely supplanted by other drugs. It is known to cause blood dyscrasias and suspected of terato- and carcinogenesis.
The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001)
A metallic element, atomic number 49, atomic weight 114.82, symbol In. It is named from its blue line in the spectrum. (From Dorland, 28th ed)
The internal resistance of a material to moving some parts of it parallel to a fixed plane, in contrast to stretching (TENSILE STRENGTH) or compression (COMPRESSIVE STRENGTH). Ionic crystals are brittle because, when subjected to shear, ions of the same charge are brought next to each other, which causes repulsion.
Platinum. A heavy, soft, whitish metal, resembling tin, atomic number 78, atomic weight 195.09, symbol Pt. (From Dorland, 28th ed) It is used in manufacturing equipment for laboratory and industrial use. It occurs as a black powder (platinum black) and as a spongy substance (spongy platinum) and may have been known in Pliny's time as "alutiae".
The study of the energy of electrons ejected from matter by the photoelectric effect, i.e., as a direct result of absorption of energy from electromagnetic radiation. As the energies of the electrons are characteristic of a specific element, the measurement of the energy of these electrons is a technique used to determine the chemical composition of surfaces.
Dental cements composed either of polymethyl methacrylate or dimethacrylate, produced by mixing an acrylic monomer liquid with acrylic polymers and mineral fillers. The cement is insoluble in water and is thus resistant to fluids in the mouth, but is also irritating to the dental pulp. It is used chiefly as a luting agent for fabricated and temporary restorations. (Jablonski's Dictionary of Dentistry, 1992, p159)
The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)
Inorganic compounds that contain carbon as an integral part of the molecule but are not derived from hydrocarbons.
Holding a DENTAL PROSTHESIS in place by its design, or by the use of additional devices or adhesives.
Materials used in the production of dental bases, restorations, impressions, prostheses, etc.
A type of porcelain used in dental restorations, either jacket crowns or inlays, artificial teeth, or metal-ceramic crowns. It is essentially a mixture of particles of feldspar and quartz, the feldspar melting first and providing a glass matrix for the quartz. Dental porcelain is produced by mixing ceramic powder (a mixture of quartz, kaolin, pigments, opacifiers, a suitable flux, and other substances) with distilled water. (From Jablonski's Dictionary of Dentistry, 1992)
Wires of various dimensions and grades made of stainless steel or precious metal. They are used in orthodontic treatment.
Inorganic compounds that contain silicon as an integral part of the molecule.
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Inorganic or organic compounds that contain boron as an integral part of the molecule.
Compounds similar to hydrocarbons in which a tetravalent silicon atom replaces the carbon atom. They are very reactive, ignite in air, and form useful derivatives.
Substances used to bond COMPOSITE RESINS to DENTAL ENAMEL and DENTIN. These bonding or luting agents are used in restorative dentistry, ROOT CANAL THERAPY; PROSTHODONTICS; and ORTHODONTICS.
A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.
Metal devices for fastening together two or more parts of dental prostheses for stabilizing or retaining them by attachment to abutment teeth. For a precision attachment for a partial denture DENTURE PRECISION ATTACHMENT is available.
A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin.
The plan and delineation of dental prostheses in general or a specific dental prosthesis. It does not include DENTURE DESIGN. The framework usually consists of metal.
An alloy used in restorative dentistry that contains mercury, silver, tin, copper, and possibly zinc.
A test to determine the relative hardness of a metal, mineral, or other material according to one of several scales, such as Brinell, Mohs, Rockwell, Vickers, or Shore. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98.
A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.
A partial denture designed and constructed to be removed readily from the mouth.
The spectrometric analysis of fluorescent X-RAYS, i.e. X-rays emitted after bombarding matter with high energy particles such as PROTONS; ELECTRONS; or higher energy X-rays. Identification of ELEMENTS by this technique is based on the specific type of X-rays that are emitted which are characteristic of the specific elements in the material being analyzed. The characteristic X-rays are distinguished and/or quantified by either wavelength dispersive or energy dispersive methods.
A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.
Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.
A technique of measuring the dielectric properties of materials, which vary over a range of frequencies depending on the physical properties of the material. The technique involves measuring, over a range of frequencies, ELECTRICAL IMPEDANCE and phase shift of an electric field as it passes through the material.
Inorganic or organic compounds that contain sulfur as an integral part of the molecule.
Zirconium. A rather rare metallic element, atomic number 40, atomic weight 91.22, symbol Zr. (From Dorland, 28th ed)
The methyl ester of methacrylic acid. It polymerizes easily to form POLYMETHYL METHACRYLATE. It is used as a bone cement.
The use of a layer of tooth-colored material, usually porcelain or acrylic resin, applied to the surface of natural teeth, crowns, or pontics by fusion, cementation, or mechanical retention.
A technique using a pneumatic, high-pressure stream of aluminum oxide to remove DENTAL ENAMEL; DENTIN; and restorative materials from teeth. In contrast to using DENTAL HIGH-SPEED EQUIPMENT, this method usually requires no dental anesthesia (ANESTHESIA, DENTAL) and reduces risks of tooth chipping and microfracturing. It is used primarily for routine DENTAL CAVITY PREPARATION.
Solution titration in which the end point is read from the electrode-potential variations with the concentrations of potential determining ions. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The quality or state of being able to be bent or creased repeatedly. (From Webster, 3d ed)
Natural teeth or teeth roots used as anchorage for a fixed or removable denture or other prosthesis (such as an implant) serving the same purpose.
The placing of a body or a part thereof into a liquid.
Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.
Magnesium oxide (MgO). An inorganic compound that occurs in nature as the mineral periclase. In aqueous media combines quickly with water to form magnesium hydroxide. It is used as an antacid and mild laxative and has many nonmedicinal uses.
A property of the surface of an object that makes it stick to another surface.
Synthetic resins, containing an inert filler, that are widely used in dentistry.
Destruction by passage of a galvanic electric current, as in disintegration of a chemical compound in solution.
Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed)
Binary compounds of oxygen containing the anion O(2-). The anion combines with metals to form alkaline oxides and non-metals to form acidic oxides.
Inorganic compounds that contain potassium as an integral part of the molecule.
The properties and processes of materials that affect their behavior under force.
Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.
The growth action of bone tissue as it assimilates surgically implanted devices or prostheses to be used as either replacement parts (e.g., hip) or as anchors (e.g., endosseous dental implants).
The process of reuniting or replacing broken or worn parts of a denture.
The branch of physics which deals with the motions of material bodies, including kinematics, dynamics, and statics. When the laws of mechanics are applied to living structures, as to the locomotor system, it is referred to as BIOMECHANICAL PHENOMENA. (From Dorland, 28th ed)
Biocompatible materials placed into (endosseous) or onto (subperiosteal) the jawbone to support a crown, bridge, or artificial tooth, or to stabilize a diseased tooth.
Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)
Chemicals especially for use on instruments to destroy pathogenic organisms. (Boucher, Clinical Dental Terminology, 4th ed)
The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes.
Resistance and recovery from distortion of shape.
An electrochemical technique for measuring the current that flows in solution as a function of an applied voltage. The observed polarographic wave, resulting from the electrochemical response, depends on the way voltage is applied (linear sweep or differential pulse) and the type of electrode used. Usually a mercury drop electrode is used.
The plan, delineation, and location of actual structural elements of dentures. The design can relate to retainers, stress-breakers, occlusal rests, flanges, framework, lingual or palatal bars, reciprocal arms, etc.
A calcium salt that is used for a variety of purposes including: building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. It exists in various forms and states of hydration. Plaster of Paris is a mixture of powdered and heat-treated gypsum.
Substances that inhibit or arrest DENTAL CARIES formation. (Boucher's Clinical Dental Terminology, 4th ed)
The utilization of an electrical current to measure, analyze, or alter chemicals or chemical reactions in solution, cells, or tissues.
The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.
Chemical reaction that occurs when saliva comes into contact with the metals in dental fillings. This reaction can send electric currents through the brain causing negative symptoms.
Surface resistance to the relative motion of one body against the rubbing, sliding, rolling, or flowing of another with which it is in contact.
Ionized gases, consisting of free electrons and ionized atoms or molecules which collectively behave differently than gas, solid, or liquid. Plasma gases are used in biomedical fields in surface modification; biological decontamination; dentistry (e.g., PLASMA ARC DENTAL CURING LIGHTS); and in other treatments (e.g., ARGON PLASMA COAGULATION).
Removable prosthesis constructed over natural teeth or implanted studs.
The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The selected form given to a natural tooth when it is reduced by instrumentation to receive a prosthesis (e.g., artificial crown or a retainer for a fixed or removable prosthesis). The selection of the form is guided by clinical circumstances and physical properties of the materials that make up the prosthesis. (Boucher's Clinical Dental Terminology, 4th ed, p239)
Presence of warmth or heat or a temperature notably higher than an accustomed norm.
A prosthesis that gains its support, stability, and retention from a substructure that is implanted under the soft tissues of the basal seat of the device and is in contact with bone. (From Boucher's Clinical Dental Terminology, 4th ed)
A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992)
Diamond. A crystalline form of carbon that occurs as hard, colorless or tinted isomeric crystals. It is used as a precious stone, for cutting glass, and as bearings for delicate mechanisms. (From Grant & Hackh's Chemical Dictionary, 5th ed)
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
Photography of objects viewed under a microscope using ordinary photographic methods.
Implants constructed of materials designed to be absorbed by the body without producing an immune response. They are usually composed of plastics and are frequently used in orthopedics and orthodontics.
Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.
Replacement for a hip joint.
Polymerized methyl methacrylate monomers which are used as sheets, moulding, extrusion powders, surface coating resins, emulsion polymers, fibers, inks, and films (From International Labor Organization, 1983). This material is also used in tooth implants, bone cements, and hard corneal contact lenses.
An element of the rare earth family of metals. It has the atomic symbol Y, atomic number 39, and atomic weight 88.91. In conjunction with other rare earths, yttrium is used as a phosphor in television receivers and is a component of the yttrium-aluminum garnet (YAG) lasers.
The use of computers for designing and/or manufacturing of anything, including drugs, surgical procedures, orthotics, and prosthetics.
A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.
Restorations of metal, porcelain, or plastic made to fit a cavity preparation, then cemented into the tooth. Onlays are restorations which fit into cavity preparations and overlay the occlusal surface of a tooth or teeth. Onlays are retained by frictional or mechanical factors.
A metallic element with the atomic symbol Mo, atomic number 42, and atomic weight 95.94. It is an essential trace element, being a component of the enzymes xanthine oxidase, aldehyde oxidase, and nitrate reductase. (From Dorland, 27th ed)
Coloring, shading, or tinting of prosthetic components, devices, and materials.
Beryllium. An element with the atomic symbol Be, atomic number 4, and atomic weight 9.01218. Short exposure to this element can lead to a type of poisoning known as BERYLLIOSIS.
Artificial substitutes for body parts and materials inserted into organisms during experimental studies.
Inorganic compounds that contain chromium as an integral part of the molecule.
Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.
Argon. A noble gas with the atomic symbol Ar, atomic number 18, and atomic weight 39.948. It is used in fluorescent tubes and wherever an inert atmosphere is desired and nitrogen cannot be used.
Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.
A simple organophosphorus compound that inhibits DNA polymerase, especially in viruses and is used as an antiviral agent.
Inorganic compounds that contain mercury as an integral part of the molecule.
Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.
Poly-2-methylpropenoic acids. Used in the manufacture of methacrylate resins and plastics in the form of pellets and granules, as absorbent for biological materials and as filters; also as biological membranes and as hydrogens. Synonyms: methylacrylate polymer; poly(methylacrylate); acrylic acid methyl ester polymer.
Further or repeated use of equipment, instruments, devices, or materials. It includes additional use regardless of the original intent of the producer as to disposability or durability. It does not include the repeated use of fluids or solutions.

Transcatheter closure of secundum atrial septal defects with the new self-centering Amplatzer Septal Occluder. (1/452)

AIMS: The study was set up to find out whether a new self-centering prosthesis for transcatheter closure of secundum atrial septal defects could overcome the disadvantages of previously described devices. METHODS AND RESULTS: Fifty-two consecutive patients with a significant atrial septal defect were considered for transcatheter closure with the Amplatzer Septal Occluder. The device, made of a Nitinol and polyester fabric mesh, provides a different approach to defect occlusion by stenting the atrial septal defect up to a stretched diameter of 26 mm. Three infants whose large defects were demonstrated on a transthoracic echocardiogram were excluded from transcatheter treatment. On transoesophageal echocardiography, 49 defects ranged from 6-26 mm, in one adult the defect measured 28 mm and this patient was excluded from attempted transcatheter closure. At cardiac catheterization in five further patients, devices were not implanted, in two because the stretched diameter exceeded 26 mm and in three the device was withdrawn because it was unstable or compromised the mitral valve. Thus, device closure was performed in 43 patients. At follow-up after 3 months the complete closure rate was 97%. CONCLUSION: The self-centering Amplatzer Septal Occluder is very efficient and user-friendly and offers interventional closure in 83% of an unselected group of patients presented with an atrial septal defect.  (+info)

New device for closure of muscular ventricular septal defects in a canine model. (2/452)

BACKGROUND: Repair of muscular ventricular septal defects (MVSDs) has always been challenging to the surgeon. Long-term morbidity and mortality are significantly increased if the defects are closed via left ventriculotomy or if they are associated with other complex congenital anomalies. The purpose of this study was to close MVSDs with the Amplatz ventricular septal defect device. This device is constructed from 0.004-in nitinol wire mesh filled with polyester fibers. It is retrievable, repositionable, self-centering, and of low profile. METHODS AND RESULTS: MVSDs were created with the help of a sharp punch in 10 dogs. The location of the defects was anterior muscular (n=3), midmuscular (n=3), apical (n=3), and inlet muscular (n=1). The diameter of the defects ranged from 6 to 14 mm. All defects were closed in the catheterization laboratory. The device was placed with the help of transesophageal echocardiography and fluoroscopy. A 7F sheath was used to deploy the device from the right ventricular side in 8 and the left ventricular side in 2 dogs. Placement was successful in all animals. The complete closure rate was 30% (3/10) immediately after placement and 100% at 1-week follow-up. Pathological examination of the heart revealed complete endothelialization of the device in dogs killed after 3 months. CONCLUSIONS: The Amplatz ventricular septal defect device appears highly efficacious in closing MVSDs. The advantages include a small delivery sheath, complete retrievability before release, and the fact that it is self-centering and self-expanding, thereby making it an attractive option in smaller children.  (+info)

Origin of graphitic carbon and pentlandite in matrix olivines in the Allende meteorite. (3/452)

Matrix olivines in the Allende carbonaceous chondrite are believed to have formed by condensation processes in the primitive solar nebula. However, transmission electron microscope observations of numerous matrix olivines show that they contain abundant, previously unrecognized, nanometer-sized inclusions of pentlandite and poorly graphitized carbon. Neither of these phases would have been stable at the high-temperature conditions required to condense iron-rich olivine in the solar nebula. The presence of these inclusions is consistent with formation of the olivines by parent body processes that involved overgrowth of fine-grained organic materials and sulfides in the precursor matrix materials.  (+info)

Further experience with transcatheter closure of the patent ductus arteriosus using the Amplatzer duct occluder. (4/452)

OBJECTIVE: The aim of this study was to report further experience with transcatheter closure of the patent ductus arteriosus (PDA) using the Amplatzer duct occluder (ADO). BACKGROUND: The design of previously used devices is not ideal for this purpose, and their use has been associated with several drawbacks, especially in large PDAs. METHODS: Forty-three patients, aged 0.3 to 33 years (mean 6.4+/-6.7 years), with a moderate to large, type A to E PDA, underwent attempted transcatheter closure using the ADO. The device is a plug-shaped repositionable occluder made of 0.004-in. nitinol wire mesh. It is delivered through a 5F to 6F long sheath. The mean PDA diameter (at the pulmonary end) was 3.9+/-1.2 mm (range 2.2 to 8 mm). All patients had color flow echocardiographic follow-up (6 to 24 months) at 24 h, 1 and 3 months after closure, and at 6-month intervals thereafter. RESULTS: The mean ADO diameter was 6.1+/-1.4 mm (range 4 to 10 mm). Complete angiographic closure was seen in 40 of 43 patients (93%; 95% confidence interval [CI] 85.4% to 100%). The remaining three patients had a trivial angiographic shunt through the ADO. At 24 h, color flow mapping revealed no shunt in all patients. A 9F long sheath was required for repositioning of a misplaced 8-mm device into the pulmonary artery. The mean fluoroscopy time was 7.9+/-1.6 min (range 4.6 to 12 min). There were no complications. No obstruction of the descending aorta or the pulmonary artery branches was noted on Doppler follow-up studies. Neither thromboembolization nor hemolysis or device failure was encountered. CONCLUSIONS: Transcatheter closure using the ADO is an effective and safe therapy for the majority of patients with patency of the arterial duct. Further studies are required to establish long-term results in a larger patient population.  (+info)

Successful percutaneous endovascular treatment of a ruptured popliteal artery aneurysm. (5/452)

A rupture of the popliteal artery is a rare but dangerous complication of aneurysmal disease. It accounts for 4% of all popliteal artery aneurysms encountered and threatens the loss of the extremity and, infrequently, is also life-threatening.(1) when this clinical entity is confronted, a prompt operative intervention is indispensable for increasing the chances of limb salvage. We report the first, to our knowledge, successful endovascular treatment of a ruptured popliteal artery aneurysm with a new polytetrafluoroethylene stent-graft in a patient who was unfit for a conventional surgical approach because of his severe pulmonary disease.  (+info)

Hard metal alveolitis accompanied by rheumatoid arthritis. (6/452)

Hard metal lung diseases (HML) are rare, and complex to diagnose. We describe the case of a patient with allergic alveolitis accompanied by rheumatoid arthritis. A sharpener of hard metal by trade, our patient was a 45-year-old, nonsmoking Caucasian female who experienced symptoms of cough and phlegm, and dyspnea on exertion. Preliminary lung findings were inspiratory rales in both basal areas, decreased diffusion capacity and a radiological picture resembling sarcoidosis. A high-resolution computed tomography scan indicated patchy alveolitis as well. An open lung biopsy revealed non-necrotizing granulomas consisting of epitheloid cells and surrounded by lymphocytes, plasma cells and a few eosinophils. These cells also occupied the thickened alveolar interstitium. Macrophages in the alveolar spaces, some of them multinuclear, contained dust particles. Hard metal alveolitis is clinically well known and, in this patient, has been described histologically. After the patient had quit working with hard metal and following corticosteroid therapy, pulmonary symptoms and signs were relieved. During this recovery period, however, she contracted rheumatoid arthritis.  (+info)

Endovascular stenting for carotid artery stenosis: preliminary experience using the shape-memory- alloy-recoverable-technology (SMART) stent. (7/452)

We describe our initial clinical experience using the newly available self-expanding, Nitinol, shape-memory-, alloy-recoverable-technology (SMART) stent in treating carotid artery occlusive disease. Five stents were used in four carotid arteries in four consecutive patients with carotid stenosis of at least 70%. Technical success (<20% residual stenosis) was achieved in all cases. No procedural complications specifically related to use of the SMART stent were encountered. All patients remained symptom-free, with no evidence of transient ischemic attacks or new strokes during an average follow-up period of 6 months. Excellent performance of the SMART stent for the endovascular treatment of carotid artery stenosis has been shown based on our early experience. Validation with greater numbers and longer-term follow-up is required. The specific technical characteristics, potential advantages, and disadvantages of this stent are discussed and compared with other currently used carotid artery stents.  (+info)

Nitinol - its use in vascular surgery and other applications. (8/452)

OBJECTIVES: to describe the physical properties of shape-memory alloys and the surgical, scientific and commercial applications of nitinol, in particular. DESIGN AND METHODS: a Medline, Internet and library search with contributions from commerce to describe the alloy's structure, behaviour and biocompatibility, and design for devices constructed from nitinol. RESULTS: nitinol has the properties of thermal shape memory and superelasticity that make it ideal for many vascular and general surgical prostheses and disposables, and for various commercial applications. CONCLUSIONS: further research into shape-memory alloys from scientific and commercial groups should widen their use in vascular and endovascular surgery.  (+info)

A method of treating a shape memory alloy to improve its various characteristics and to cause it to exhibit a two-way shape memory effect. A raw shape memory alloy having a substantially uniformly fine-grained crystal structure is prepared and then its crystal orientations are arranged substantially in a direction suitable for an expected operational direction, such as tensile or twisting direction or the like, in which the shape memory alloy is expected to move when used in an actuator after the completion of the treatment.
This trial compared vascular healing response between self-expanding nitinol stent and self-expanding paclitaxel-eluting stent in the superficial femoral
TY - CONF. T1 - Computer simulation of microstructural evolution in Ni-rich TiNi shape memory alloys under applied stresses. AU - Li, D. Y.. AU - Chen, Long-qing. PY - 1998/1/1. Y1 - 1998/1/1. N2 - Coherent Ti11Ni14 precipitation in TiNi shape memory alloys and its variation under applied stresses were investigated using a diffuse-interface phase-field model. In this model, the structural difference between the precipitate phase and the matrix as well as the orientational difference between precipitate variants are distinguished by structural field variables, whereas the compositional difference between the precipitate phase and the matrix is distinguished by a concentration field variable. The temporal variation of the field variables is determined by solving the Ginzburg-Landau equations and the Cahn-Hilliard equation. Precipitate morphologies and their variation under strain-constraints were studied.. AB - Coherent Ti11Ni14 precipitation in TiNi shape memory alloys and its variation under ...
The application of Nitinol shape memory alloys (SMA) in steel connections is evaluated using connections incorporating SMA tendons. Shape memory alloys are a class of alloys that exhibit thermo-mechanical characteristics that are ideally suited for seismic applications. They have the ability to dissipate significant energy with little permanent deformation, and possess highly reliable energy dissipation based on a repeatable solid state phase transformation. To assess the validity of using SMA in real structures, two full-scale connections are tested. The tests are conducted on exterior joint specimens and tested according to the SAC testing protocol. The beams are W24 x 94 and the columns W14 x 159, all of A572 Grade 50 steel. Companion regular steel connections are tested for comparison. The connections are of a T-stub type, with four 11/2 inch diameter SMA rods providing the tensile resistance to the column. The specimens are re-tested several times to determine the ability of the SMA rods to ...
Actuator concepts utilizing NiMnGa, ferromagnetic shape memory alloy are investigated for potential use on a smart rotor for trailing edge flap actuation. With their high energy density, large dynamic stroke, and wide operating bandwidth, ferromagnetic shape memory alloys (FSMA) like NiMnGa, seem like attractive candidates for smart rotor actuators, potentially able to fulfill the requirements for both primary rotor control and vibration suppression. However, because of the recent discovery of the material, current experimental data and analytical tools are limited. To rectify these shortcomings, an extensive set of detailed experiments were conducted on samples of NiMnGa to characterize the response of the alloy for a wide variety of mechanical and magnetic loading conditions. Measurements of the material performance parameters such as power density, damping properties, magneto-mechanical coupling, and transduction efficiency were included. Once characterized, the experimental data were used to ...
Define Magnesium alloy. Magnesium alloy synonyms, Magnesium alloy pronunciation, Magnesium alloy translation, English dictionary definition of Magnesium alloy. n. Symbol Mg A light, silvery-white, moderately hard metallic element that in ribbon or powder form burns with a brilliant white flame. Obtained chiefly...
The primary goal of the Consortium for the Advancement of Shape Memory Alloy Research and Technology (CASMART) is to enable the design of revolutionary applications based on shape memory alloy (SMA) technology. In order to help realize this goal and reduce the development time and required experience for the fabrication of SMA actuation systems, several modeling tools have been developed for common actuator types and are discussed herein along with case studies, which highlight the capabilities and limitations of these tools. Due to their ability to sustain high stresses and recover large deformations, SMAs have many potential applications as reliable, lightweight, solid-state actuators. Their advantage over classical actuators can also be further improved when the actuator geometry is modified to fit the specific application. In this paper, three common actuator designs are studied: wires, which are lightweight, low-profile, and easily implemented; springs, which offer actuation strokes upwards ...
Single crystal Ni-Mn-Ga ferromagnetic shape memory alloys (FSMAs) are active materials which produce strain when a magnetic field is applied. The large saturation strain (6%) of Ni-Mn-Ga, and material energy density comparable to piezoelectric ceramics make Ni- Mn-Ga an interesting active material. However, their usefulness is limited by the bulky electromagnet required to produce a magnetic field. In this thesis, a novel actuation method is developed for shape memory alloys in their martensitic phase, whereby asymmetric acoustic pulses are used to drive twin boundary motion. Experimental actuators were developed using a combination of Ni-Mn-Ga FSMA single crystals and a piezoelectric stack actuator. In bi-directional actuation without load, strains of over 3% were achieved using repeated pulses (at 100 Hz) over a 30 s interval, while 1% strain was achieved in under 1 s. The maximum strains achieved are comparable to the strains achieved using bi-directional magnetic actuation, although the time ...
Market Research Future Published a Half-Cooked Research Report on Global Shape Memory Alloys Research Report. Market Highlights: Global shape memory alloys (SMA) market is estimated to expand at a CAGR of 10.79% to reach USD 11,079.1 million by the end of 2023. SMA is gaining prominence in the global market with the growing usage in the end use industries such as biomedical, spacecraft, aircraft, transport, electrical appliances, construction & housing, subsea, hot water supply, and others. Free Sample Report at Here @ https://www.marketresearchfuture.com/sample_request/5997 – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 8e3cc6-NWQxY
Shape Memory Alloys Market is anticipated to reach USD XX.X BN by 2026 with a CAGR of 13%, this market report provides the key players, trends, growth & forecast of the market based on in-depth research by industry analyst. The global market size, share along with dynamics are covered in the shape memory alloys market report
Background: Restenosis following nitinol stent implantation in the superficial femoral artery (SFA) predominantly occurs within a year, but continues to occur with lower rates afterwards. However, factors associated with restenosis remain unclear. We sought to investigate the factors associated with restenosis within a year and beyond in this study.. Methods: We studied 431 limbs in consecutive 309 patients with peripheral artery disease (74±9 years, male 72%, claudicator 70%) who underwent successful endovascular therapy (EVT) for de novo SFA lesions. Nitinol stents (Luminexx in 93 limbs; Smart in 338 limbs) were provisionally deployed from April 2004 to December 2008. We classified the limbs as: early restenosis group = restenosis occurred within a year, 68 limbs; late restensosis group = restensosis occurred beyond a year, 24limbs; no-restenosis group, 339 limbs. Restenosis was detected by duplex ultrasound and stent fracture was identified by X-ray. A multiple logistic analysis was ...
The goal of this thesis is to develop a full dimensional micromechanics-inspired constitutive model for polycrystalline shape-memory alloys. The model is presented in two forms: (1) The one-dimensional framework where we picture the ability of the model in capturing main properties of shape memory alloys such as superelasticity and shape-memory effect; (2) The full dimensional model where micromechanics origins of the model, the concepts emerged from those analysis and their relation to macroscopic properties in both single and polycrystals are presented.. We use this framework to study the effects of the texture and anisotropy in the material behavior. Since phase transformation often competes with plasticity in shape-memory alloys, we incorporate that phenomenon into our model. We also demonstrate the ability of the model to predict the response of the material and track the phase transformation process for multi-axial, proportional and non-proportional loading and unloading experiments. We ...
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Shape memory alloy (SMA) microactuators are under development for use in soft bodied robotics. These actuators take advantage of the shape memory effect of nickel-titanium alloys (nitinol) to deliver high force and large strain in a solid-state, thin film actuator. The actuators will be used for generating motion in an all-soft-material robotic platform that attempts to mimic some of the features of the tobacco hornworm caterpillar, Manduca Sexta. The devices described in this work are unique due to their thin patch-like structure, which will allow them to be laminated onto, or embedded into, the soft wall of the robot. The actuator patches consist of a nitinol microwire on a flexible polyimide base. The overall dimensions of the patches vary from 7.75 x 3.5 mm to 22 x 10 mm. The wires are 0.1 -0.8 mm wide. The polyimide is photodefined in a mesh structure so that the sheet is much more compliant in tension and compression than a flat sheet. The nitinol microwire meanders across the polyimide structure
TY - JOUR. T1 - Effect of travel speed on quality and welding efficiency of friction stir welded AZ31B magnesium alloy. AU - Baghdadi, Amir Hossein. AU - Selamat, Nor Fazilah Mohamad. AU - Sajuri, Zainuddin. AU - Kokabi, Amir Hossein. PY - 2018/1/1. Y1 - 2018/1/1. N2 - Weight reduction is one of the most concerning issues of automotive and aircraft industries in reducing fuel consumption. Magnesium (Mg) alloys are the lightest alloys which can be used in the structure due to low density and high strength to weight ratio. Developing a reliable joining process of magnesium alloys is required due to limited ductility and low workability at room temperature. Friction stir welding (FSW) is a solid-state welding process that can be performed to produce sound joints in magnesium alloys. Researchers have performed investigations on the effect of rotation and travel speeds in FSW of AZ31B magnesium alloy. However, there is lack of study on the FSW parameters, i.e. travel speed below 50 mm/min and ...
A shape memory alloy consists of a three element alloy of nickel-titanium-copper which is formed as being subjected to a cold working and to a heat treatment at a temperature below recrystallization point of the alloy for storing the shape, the alloy being thereby improved in operation stability and reliability even after repetitive operation and made wider in environmental temperature range for use therein of the alloy.
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An implantable probe having an elongated sheath with provision for remotely positioning a device disposed within the elongated sheath. In one embodiment, the device is a circuit board, and a shape memory alloy (SMA) such as Nitinol is used to fabricate one or more actuators that are coupled to the circuit board. The shape memory effect exhibited by the SMA actuator is thermally activated. Electrical current is selectively applied to the actuator to resistively heat the SMA to a temperature sufficient to change its shape. When the shape of the SMA changes, the actuator moves the circuit board or other device longitudinally within the elongated sheath so that the light emitted is directed to a different portion of a treatment site. In another embodiment, the circuit board is rotated about its longitudinal axis within the sheath. In still another embodiment, the actuator moves a piston so as to pump a fluid through a pair of lumens disposed within the sheath to dissipate heat produced by the light emitting
We describe herein biocompatible single crystal Cu-based shape memory alloys (SMAs). In particular, we show biocompatibility based on MEM elution cell cytotoxicity, ISO intramuscular implant, and hemo-compatibility tests producing negative cytotoxic results. This biocompatibility may be attributed to the formation of a durable oxide surface layer analogous to the titanium oxide layer that inhibits body fluid reaction to titanium nickel alloys, and/or the non-existence of crystal domain boundaries may inhibit corrosive chemical attack. Methods for controlling the formation of the protective aluminum oxide layer are also described, as are devices including such biocompatible single crystal copper-based SMAs.
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A polycrystalline Ni 41Co 9Mn 40Sn 10 (at. %) magnetic shape memory alloy was prepared by arc melting and characterized mainly by magnetic measurements, in-situ high-energy X-ray diffraction (HEXRD), and mechanical testing. A large magnetoresistance of 53.8% (under 5 T) and a large magnetic entropy change of 31.9 J/(kg K) (under 5 T) were simultaneously achieved. Both of these values are among the highest values reported so far in Ni-Mn-Sn-based Heusler alloys. The large magnetic entropy change, closely related to the structural entropy change, is attributed to the large unit cell volume change across martensitic transformation as revealed by our in-situ HEXRD experiment. Furthermore, good compressive properties were also obtained. Lastly, the combination of large magnetoresistance, large magnetic entropy change, and good compressive properties, as well as low cost makes this alloy a promising candidate for multifunctional applications. ...
In this study some new concepts regarding certain aspects related to shape memory polymers are presented. A blend of polylactic acid (PLA) (80%) and polybutylene succinate (PBS) (20%) was prepared first by extrusion, then by injection molding to obtain the samples. Tensile, stress-relaxation and recovery tests were performed on these samples at 70 °C. The results indicated that the blend can only regain 24% of its initial shape. It was shown that, this partial shape memory effect could be improved by successive cycles of shape memory tests. After a fourth cycle, the blend is able to regain 82% of its shape. These original results indicated that a polymer without (or with partial) shape memory effect may be transformed into a shape memory polymer without any chemical modification. In this work, we have also shown the relationship between shape memory and property memory effect. Mono and multi-frequency DMA (dynamic mechanical analyzer) tests on virgin and 100% recovered samples of polyurethane (PU)
In spite of some good successes and excellent researches of Nickel-titanium shape memory alloy (NiTi-SMA) in reconstructive surgery, there are still serious limitations to the clinical applications of NiTi alloy today. The potential leakage of elements and ions could be toxic to cells, tissues and organs. This review discussed the properties, clinical applications, corrosion performance, biocompatibility, the possible preventive measures to improve corrosion resistance by surface/structure modifications and the long-term challenges of using SMAs.
With the progress of miniaturization, shape memory alloy (SMA) actuators exhibit high energy density, self-sensing ability and ease of fabrication, which make them well suited for practical applications. This paper presents a self-sensing controlled actuator drive that was designed using antagonistic pairs of SMA wires. Under a certain pre-strain and duty cycle, the stress between two wires becomes constant. Meanwhile, the strain to resistance curve can minimize the hysteresis gap between the heating and the cooling paths. The curves of both wires are then modeled by fitting polynomials such that the measured resistance can be used directly to determine the difference between the testing values and the target strain. The hysteresis model of strains to duty cycle difference has been used as compensation. Accurate control is demonstrated through step response and sinusoidal tracking. The experimental results show that, under a combination control program, the root-mean-square error can be reduced to 1.093
By leveraging the core competence in special metallurgy and industrial high volume production capabilities, SAES Getters, as a Shape Memory Alloys
The elbow joint is a complex articulation composed of the humeroulnar and humeroradial joints (for flexion-extension movement) and the proximal radioulnar articulation (for pronation-supination movement). During the flexion-extension movement of the elbow joint, the rotation center changes and this articulation cannot be truly represented as a simple hinge joint. The main goal of this project is to design and assemble a medical rehabilitation exoskeleton for the elbow with one degree of freedom for flexion-extension, using the rotation center for proper patient elbow joint articulation. Compared with the current solutions, which align the exoskeleton axis with the elbow axis, this offers an ergonomic physical human-robot interface with a comfortable interaction. The exoskeleton is actuated with shape memory alloy wire-based actuators having minimum rigid parts, for guiding the actuators. Thanks to this unusual actuation system, the proposed exoskeleton is lightweight and has low noise in operation with
My research work has been based on both fundamental and applied science, with a dominant theme of steel metallurgy. During an academic career spanning more than thirty years, the emphasis of my research has shifted progressively towards the applied end of the research spectrum. The publications are divided into two streams: martensitic transformations and shape memory alloys (Section 2.1); and welding and thermomechanical processing of steels (Section 2.2). The first stream has involved research that tends to be more fundamental in nature, whereas the second stream has more immediate industrial significance. Although these fields represent the two major thrusts of my research work, the complete list of publications (Appendix 2) indicates wider activity that includes the fields of surface engineering, creep of pressure vessel steels, engineering ceramics, recrystallisation in non-ferrous materials, solidification and archeometallurgy.
We have studied adiabatic temperature change ÎTad in a Ni50Mn36Co1Sn13 metamagnetic shape memory alloy. An irreversible character of ÎTad has been observed in the vicinity of the reverse martensitic transformation. In this region, cyclic application of the magnetic field converts comparatively large inverse magnetocaloric effect (MCE) with ÎTadmax=-0.8 K to a weaker conventional MCE (ÎTadmax=0.3 K). The crossover of ÎTad has been attributed to the irreversible character of the magnetic field-induced transformation and the closeness of the martensitic transformation and Curie temperature of the austenitic phase TCA ...
This paper presents the position and vibration control of a single flexible slewing structure driven by a DC motor at the slewing axis. The position is controlled over the current applied to the DC motor armature. To control the vibration of the flexible structure Shape Memory Alloys (SMA) are applied to them. The control is made through the State Dependent Ricatti Equations (SDRE) technique which uses sub-optimal control and system local stability search. Numerical simulations and experimental results are presented which demonstrate the effectiveness of the proposed control strategy.. ...
A coupled kinetic Monte Carlo - Finite Element Analysis (kMC-FEA) method is developed with a numerical implementation in the Scalable Implementation of Finite Elements at NASA (ScIFEN). This method is presented as a mesoscale model for Shape Memory Alloy (SMA) material systems. The model is based on Transition State Theory and predicts the nonlinear mechanical behavior of the 1st order solid-solid phase transformation between Austenite and Martensite in SMAs. The kMC-FEA modeling method presented in this work builds upon the work of Chen and Schuh [1, 2]. It represents a
A shape memory alloy is a type of metal which has the property of being able to contract a certain length when heated to a certain temperature then reve...
Mallik, U.S. and Sampath, V. (2008) Effect of Composition and Ageing on Damping Characteristics of Cu-Al-Mn Shape Memory Alloys. Materials Science and Engineering A, 478, 48-55.
The Shape Memory Alloys market report provides a detailed analysis of global market size, regional and country-level market size, segmentation market growth, ma
Press release - Future Market Insights - Macroeconomic and Microeconomic Shape Memory Alloy Market Analysis by Future Market Insights - published on openPR.com
small study in which 40 patients underwent nitinol stent placement in the SFA and then had a follow-up angiography, stent fracture occurred in 28% (11/40) after a mean follow-up of 13.6 months, more in patients who walked more in the time after the procedure. A retrospective analysis of 239 patients who underwent femoro-popliteal nitinol stent placement for claudication and critical limb ischemia reported a 4 year stent fracture rate of 17% and primary patency rate of 65%, similar to patients in whom there was no fracture. Clinical outcomes were not reported. A retrospective analysis of 742 limbs in 585 consecutive patients who underwent de novo SFA nitinol stent placement reported a primary and secondary patency rate of 67% and 86% at 6 years, respectively. Stent fracture, observed in 14% of limbs, was associated with early restenosis (P=0.0004). The association between stent fracture and clinical outcomes has been described in one small study of 53 patients who were followed for a median of 16 ...
Microstructural simulation of friction stir welding using a …. Microstructure evolution model The microstructural evolution during FSW of AZ91 magnesium alloy is simulated using the coination of CA and LJ methods in Deform-3D software which are coupled to the thermo-mechanically, rigid-viscoplastic FEM model of FSW. Microstructure and interfacial reactions of soldering …. The U.S. Department of Energys Office of Scientific and Technical Information @article{osti_22066166, title = {Microstructure and interfacial reactions of soldering magnesium alloy AZ31B}, author = {Liu , E-mail: [email protected] and Zhonghui, Wu}, abstractNote = {In this paper, economic and innoxious solder alloys with low melting temperature were designed for AZ31B.. Microstructure characterization of LAE442 magnesium …. The magnesium alloy LAE442 was processed by extrusion and equal channel angular pressing (ECAP) to achieve ultrafine grained microstructure. Detailed characterization of the microstructure was ...
Ni2MnGa based ferromagnetic alloys are ideal candidates for applications such as actuators, magnetic refrigerators or magnetostrictive transducers due to their attractive properties such as magnetic field induced shape memory effect and large magnetocaloric effect. The properties of these alloys (e.g., the martensitic transformation temperature T (M) ) sensitively depend on the composition. Understanding the composition dependence of these properties so as to design the alloy as desired is one of the main research topics in this area. In recent years, we have investigated the composition dependent elastic modulus and phase stability of Ni2MnGa-based alloys by using a first-principles method, in hope of clarifying their connection to the properties of these alloys. In this article, we review the main results of our investigations. We show that the tetragonal shear modulus C is a better predictor of the composition dependent T (M) than the number of valence electrons per atom (e/a) since the ...
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Cardiology Research and Practice is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies that focus on the diagnosis and treatment of cardiovascular disease. The journal welcomes submissions related to systemic hypertension, arrhythmia, congestive heart failure, valvular heart disease, vascular disease, congenital heart disease, and cardiomyopathy.
This trial will investigate the efficacy and tolerability of nitinol self-expanding biolimus A9-eluting stents [Axxess Plus; Devax] in patients with de novo
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We report the first-in-human experience with a new self-expanding THV and motorized delivery system. A TAVR with the CENTERA THV and motorized delivery system was performed successfully in 15 patients with good hemodynamic and clinical short- and midterm outcomes.. The CENTERA THV design shares some similarities with current balloon-expandable THVs (SAPIEN and SAPIEN XT, Edwards Lifesciences). All incorporate bovine pericardial tissue leaflets and an internal polyethylene terephthalate paravalvular seal and use relatively short stent frames. The salient difference is the self-expanding nitinol frame, with a flared inflow, narrower annular segment, and a larger-diameter outflow. This shape is designed to facilitate self-seating in the aortic annulus. In comparison with most other self-expanding nitinol valves the CENTERA THV does not extend into the ascending aorta for anchoring or self-alignment.. The CENTERA fixation and alignment is dependent on the self-seating stent frame but also on a ...
Using XRF + LIBS Together: When and How It Makes …. For aluminum and magnesium alloys, despite low sensitivity for magnesium, handheld XRF still delivers very accurate results. By normalizing results to 100%, handheld XRF results are insensitive to sample size, shape and roughness facilitating accurate measurement of …. Alloys for Manufacturing and Industry - Alfa Aesar. View Alfa Aesars comprehensive list of alloy products available for purchase online, including aluminum alloys, copper alloys, stainless steel alloys, nickel alloys and titanium alloys. I agree Our site saves small pieces of text information (cookies) on your device in order to …. 3 Legged Thing Punks Anarchy Travis Magnesium Alloy …. 3 Legged Thing Punks Anarchy Travis Magnesium Alloy Tripod System with AirHed Neo Ideal for Everyday use Product Details Product Dimensions: 3.94 x 3.94 x 64.96 inches. Metals market prices, forecasts & analysis , Argus Media. Metals Argus Metals provides current metal prices for over 1,000 ...
The low density and high specific strength of magnesium alloys have created a great deal of interest in the use of these alloys in the automotive and aerospace industries and in portable electronics. All of these industries deal with applications in which weight is extremely important. However, an obstacle to overcome when using magnesium alloys in engineering applications are their unsatisfactory corrosion properties. This thesis is devoted to the atmospheric corrosion of the two magnesium alloys AZ91D and AM50, in particular the ways the microstructure and exposure parameters of these alloys influence their corrosion behaviour. The work includes both laboratory and field studies. The results obtained show that the microstructure is of vital importance for the corrosion behaviour under atmospheric conditions.. The microstructure of magnesium-aluminium alloys contains different intermetallic phases, e.g. Al8Mn5 and β-Mg17Al12. The local nobility of these intermetallic phases was measured on a ...
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The global Copper and Copper Alloy Foil (=0.07mm) market has seen a potential growth over the past years. The Copper and Copper Alloy Foil (=0.07mm) industry is estimated to reach USD 1,409.0 million in 2022, growing at a CAGR of 6.14% between 2017 and 2022 according to this study.. Global Copper and Copper Alloy Foil (=0.07mm) Market report has been composed and based on an in-depth market analysis with inputs from industry professionals and Copper and Copper Alloy Foil (=0.07mm) research Information about the technological advancements influencing the growth. The motive of the global Copper and Copper Alloy Foil (=0.07mm) market report is to interpret the trends and forecasts for the Copper and Copper Alloy Foil (=0.07mm) market over the upcoming years. The prime focus of the Copper and Copper Alloy Foil (=0.07mm) market report is to define and specify Past-Current Size, Copper and Copper Alloy Foil (=0.07mm) Shares, Price, Segment & Forecast up to 2022. Further, the study gives a proper ...
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According to the Unified Numbering System (UNS): Coppers are copper alloys, containing not less than 99.3% of copper. Wrought coppers are designated with the numbers from C10100 through C157600. High copper alloys are copper alloys, containing more than 96% but less than 99.3% of copper. Wrought High Copper Alloys are designated with the numbers from C16200 through C19600. Alloys from these groups have any major alloying elements but may contain small amounts of beryllium (Be), chromium (Cr), phosphorous (P), silver (Ag), arsenic (As), sulfur (S), lead (Pb), tin (Sn), zirconium (Zr), magnesium (Mg), iron (Fe), cadmium (Cd) and tellurium (Te) as minor alloying additives. Coppers and high copper alloys have very high electric and heat conductivity, very high ductility and relatively low hardness and tensile strength. High copper alloys have better hardness and tensile strength, but lower ductility than coppers. The alloys may be strengthened by cold work (strain hardening). Ductility of the alloys ...
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Thermal oxidation induced during laser cleaning of an …. It was found that thermal oxidation took place on the aluminium-magnesium alloy during the irradiation in air with a laser energy ranged from 0.6 to 1.4 J cm-2. It has been demonstrated that this thermal oxidation had the same mechanism as in the case of the steady state thermal oxidation of the aluminium-magnesium alloys even though the laser irradiation was applied only for the very short Powder Metallurgy of Magnesium Is it Feasible - …. A Study of Corrosion Film Growth on Pure Magnesium and a Creep-Resistant Magnesium Alloy in an Automotive Engine Coolant Shi, Z. / Mallick, P. / McCune, R. / Simko, S. / Naab, F. / Minerals, Metals and Materials Society , 2010. Impact of COVID-19 on Global Automotive Magnesium …. 2020/7/25· The latest report published with an innovative statistics of the market titled as Automotive Magnesium Alloy Market acknowledges Size Appliion Segment, Type, Regional Outlook, Market Demand, Latest Trends, ...
abstractNote = {Neutron scattering is a very efficient method for investigating shape-memory alloys such as Cu-Zn-Al and Cu-Zn. The shape-memory effect is related to a martensitic phase transition, which is not yet fully understood. The two aims of this work are the determination of crystal structure of both phases and finding precursors of the martensitic transition in the parent phase. For a refinement of the crystal structure of the low-temperature phase I investigated first the crystal symmetry, because in most previous work a wrong crystallographic space group was used. Furthermore it was necessary to take stacking faults into account for an exact determination of the structure of the martensite. In the parent phase the degree of order and the temperature factors were determined. In order to investigate precursor effects elastic diffuse and inelastic measurements were performed in the parent phase. The phonon dispersion curves of all symmetry directions for Cu-Zn-Al and some phonon branches ...
TY - CONF. T1 - Corrosion behavior of flame-resistant Calcium-added Magnesium alloy in NaCl aqueous solution containing various anion species. AU - Tsunakawa, Mika. AU - Shiratori, Ryota. AU - Nakamura, Kae. AU - Ishizaki, Takahiro. PY - 2016/1/1. Y1 - 2016/1/1. N2 - Flame-resistant Ca-added Mg alloys are highly desirable as the materials for transport industry from viewpoints of the safety and lightweight. Recently, exposure tests of the Ca-added Mg alloys demonstrated that the anion species other than chloride ion, such as nitrate and sulfate ions, were present in the corrosion products formed on the Mg alloys. However, details of the corrosion behavior of the Ca-added Mg alloys have been not yet clarified. In this study, we aimed to investigate the corrosion behavior of the flame-resistant Ca-added Mg alloy in NaCl aqueous solution with and without sulfate ions by immersion testing. XRD and FT-IR measurements demonstrated that the corrosion products formed on the Ca-added Mg alloy AZX612 were ...
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A radiopaque nitinol medical device such as a guide wire or a stent for use with or implantation in a body lumen is disclosed. The stent is made from a superelastic alloy such as nickel-titanium or nitinol, and includes a ternary element selected from the group of chemical elements consisting of iridium, platinum, gold, rhenium, tungsten, palladium, rhodium, tantalum, silver, ruthenium, or hafnium. The added ternary element improves the radiopacity of the nitinol stent comparable to that of a stainless steel stent of the same size and strut pattern coated with a thin layer of gold. The nitinol stent has improved radiopacity yet retains its superelastic and shape memory behavior and further maintains a thin strut/wall thickness for high flexibility. For the guide wire application, a distal core section is made of the nitinol alloy with a ternary element addition thus improving radiopacity over that of distal core section made from a binary nickel-titanium alloy.
Powertrain applications of alloy AJ62 arose from its comparative resistance to high temperature deformation among magnesium alloys. In this research, AJ62 permanent-mould cast in different section thicknesses was subjected to immersion corrosion in commercially-available engine coolant. The objective was to determine corrosion behaviour variation among casting thicknesses. Corrosion product accumulation suggests passive film formation, and unlike in other media, the film exhibits certain stability. Extreme thicknesses were used to generate polarization curves for their respective microstructures in engine coolant. Variation with casting section thickness was observed in the curves. These preliminary results indicate coarsened microstructures reduce corrosion resistance of the permanent mold cast AJ62 alloy ...
Stress corrosion cracking (SCC) of Mg alloys is intergranular (IGSCC) or transgranular (TGSCC). A continuous or nearly continuous second phase, typically along grain boundaries, causes IGSCC by microgalvanic corrosion of the adjacent Mg matrix. IGSCC is expected in all such alloys, typical of most creep resistant alloys, because each known second phase has a more positive corrosion potential than the matrix a-Mg; the degree of severity depends on the electrochemical properties of the second phase; these electrochemical properties need to be studied. Nearly continuous second phases can be avoided by Mg alloy design. TGSCC is most likely caused by an interaction of hydrogen (H) with the microstructure. A study of H-trap interactions is needed to understand this damage mechanism, and to design alloys resistant to TGSCC. Understanding is urgently needed if wrought alloys are to be used safely in service, because prior research indicates that many Mg alloys have a threshold stress for SCC of about ...
The multi-center, prospective and post-market surveillance study has been designed to assess the rate of stroke or death within 72 hours of the procedure in patients treated with the Wingspan stent system.. Wingspan stent system is a self-expanding Nitinol stent and delivery system developed to treat intracranial atherosclerotic disease.. According to the company, the patients suffering from intracranial atherosclerotic disease (ICAD) may benefit from endovascular treatment with the Wingspan stent system.. The trial demonstrated that patients securing on-label treatment with the Wingspan system showed a 2.6% observed rate of stroke or death compared against the pre-specified rate for early success that was established as 4.0% with a minimum 150 patients.. The Gateway PTA balloon catheter is an over-the-wire balloon catheter for pre-dilate the lesion prior to insertion and deployment of the Wingspan stent system.. Wingspan stent system with Gateway percutaneous transluminal angioplasty (PTA) ...
List of Figure Figure Automotive Inner Fenders Picture Figure Industry Chain Structure of Automotive Inner Fenders Figure Manufacturing Process of Automotive Inner Fenders Figure SWOT of Automotive Inner Fenders Figure Hard Plastic Resins Market Size and Growth, 2015-2019 (USD Million) Figure Hard Plastic Resins Market Size and Growth, 2015-2019 (in Volume) Figure Aluminium Alloy Market Size and Growth, 2015-2019 (USD Million) Figure Aluminium Alloy Market Size and Growth, 2015-2019 (in Volume) Figure Plastic Steel Market Size and Growth, 2015-2019 (USD Million) Figure Plastic Steel Market Size and Growth, 2015-2019 (in Volume) Figure Others Market Size and Growth, 2015-2019 (USD Million) Figure Others Market Size and Growth, 2015-2019 (in Volume) Figure Hard Plastic Resins Market Estimates and Forecasts, 2020-2025 (USD Million) Figure Hard Plastic Resins Market Estimates and Forecasts, 2020-2025 (in Volume) Figure Aluminium Alloy Market Estimates and Forecasts, 2020-2025 (USD Million) Figure ...
Title: Modeling the fatigue behavior of thermomechanical shape memory alloys: Application to the optimization of biocompatible actuators for cardiac implants.. Subject: The aim of this project is the development of a thermomechanical modeling tool, robust and able to capture the different inelastic mechanisms that occur under cyclic loading in shape memory alloys (phase transformation, martensitic reorientation, plasticity, damage). This tool will be implemented in the finite element program ABAQUS in order to predict the fatigue of actuators for biomedical engineering applications. The developed model will be operated for the prediction and optimization of the fatigue strength of an innovative cardiac assist actuator equipped with SMA biocompatible material (NiTi and TiNb) under non-isothermal, cyclic and multiaxial, non-proportional loading conditions. The cardiac implant is a lamellar system consisting of a superelastic SMA and it has been designed in collaboration with the Nancy School of ...
A nanofluidic peristaltic pump includes an elongated tubular member having a first end, an opposed second end, and an elastic wall defining a flow channel extending between the first and second ends; and a series of shape memory alloy actuator wires extending across and at least partially around the outer surface of the elastic wall at spaced positions along the length of the tubular member, wherein the actuator wires are configured to reversibly and directly compress the wall, and thereby constrict regions of the flow channel, upon an electrothermally induced phase transition of the shape memory alloy. With the flow channel at the first end of the tubular member in fluid communication with a fluid source, an electric current is delivered to the actuator wires to sequentially activate and deactivate them and cause fluid to flow through the flow channel from the first end toward the second end.
Desalination has become the Middle East and other water-scarce areas of the main ways to obtain fresh water. Desalination production methods, the most widely used is a multi-stage flash method, the method is mainly composed of water heating equipment, heat recovery condenser Ministry, the Ministry of the condenser heat output, ventilation and jet condenser and other parts compressor, heat exchange positions with a large number of heat transfer tube, the original copper alloy tube, copper alloy impatience as corrosion, has now been replaced by titanium tubes. One plate heat exchanger, heat exchanger plate used in the materials industry, mainly in stainless steel, titanium and titanium alloys, nickel and nickel alloy cold-rolled sheet. 127 for pure titanium plate heat exchanger, industrial pure titanium and titanium alloys 276, 345 for the tube heat exchanger. And compared with tube heat exchanger manufactured by TA1 titanium plate heat exchanger has many advantages in the market has a strong ...
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The wear behavior of deformed magnesium alloy AZ61 under dry conditions was evaluated. Two types of AZ61 alloy were used, extruded and rolled samples, to investigate the effect of deformation process on the wear behavior. The experiments were performed using a pin-on-ring type wear apparatus against a stainless-steel counterface under applied stresses in the range of 3-7 MPa, and within a sliding velocity range of 0.2-1.8 m/s. The topographical images of the eroded surfaces at different sliding velocity for extruded and rolled samples were quantified using fractal analysis. The results revealed that for all applied stress, the wear rates increased with increasing the sliding velocity of both samples. The wear rate of the rolled samples is greater than that of the extruded samples at the stress range from 3 to 5 MPa. However, when the stress is increased to 7 MPa the wear rate of the rolled samples is lower than that of the extruded samples. The variation of fractal value of slope of linearized ...
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A wrought aluminum alloy that has very high corrosion resistance and good deformation properties. Heat-exchanger components can be produced from an aluminum alloy of this type, especially heat-exchang
Magnesium and magnesium alloys - Determination of manganese - Periodate photometric method (Manganese content between 0,01 and 0,8 %)
NEW YORK, Sept. 23, 2010 (GLOBE NEWSWIRE) -- Advanced Battery Technologies, Inc. (Nasdaq:ABAT), a leading developer, manufacturer and distributor of rechargeable Polymer Lithium-Ion (PLI) batteries as well as a manufacturer of electric vehicles, today announced that it received an order to sell aluminum magnesium alloy electric scooters valued at $0.35 million to Italy-based Menzaghi Motors. The company expects to ship these electric scooters in the fourth quarter 2010.
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Jul 31 2009 ·The purpose of this paper is to provide a review of the technology and applications of shape‐memory materials (SMMs). This paper initially considers various classes of SMMs and their properties. It then discusses applications and concludes with a brief review of recent research and future prospects. SMMs include shape‐memory alloys (SMAs) ferromagnetic SMAs (FSMAs) and shape Chat Online ...
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TY - GEN. T1 - Fatigue modification of TA15 titanium alloy weldments by an ultrasonic impact treatment. AU - Gao, Yukui. AU - Zhong, Zheng AU - Zhang, Xiaodan. AU - Wang, Yuhui N1 - Conference code: 35. PY - 2014. Y1 - 2014. N2 - The welded components of TA15 titanium alloy were ultrasonically impact treated. The fatigue lives were investigated under the same test conditions. The fatigue strength was determined by stair-step method and the residual stresses were analyzed by an X-ray diffraction stress tester. The results show that the fatigue properties of TA15 titanium alloy welded components are sensitive to the surface treatment and ultrasonic impacting can prolong the fatigue lives. The effect of fatigue strength improvement mainly depends on compressive residual stresses and grain refinement.. AB - The welded components of TA15 titanium alloy were ultrasonically impact treated. The fatigue lives were investigated under the same test conditions. The fatigue strength was determined by ...
Titanium alloys are still a young material. However, the first alloys developed at the end of the 1940s were already making aviation and aerospace history: They made it possible to enter the jet engine age and thus step into a new era. In the meantime, titanium alloys are increasingly establishing themselves in the chemical industry, the construction industry, medical technology, as well as in the offshore, energy and automotive sectors due to their high specific strength, excellent corrosion resistance, outstanding biocompatibility and other properties. At the same time, global titanium production is increasing every year.. As the energy-intensive extraction of raw materials makes titanium relatively expensive compared with other metals, research has long been trying to reduce costs by developing new manufacturing processes or ways of recycling materials. Other key areas of work include the development of new alloys with special properties, improved oxidation resistance and easier machining. If ...
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Dilute chromic acid and the organosilane bis-1,2-(triethoxysilyl)ethane (BTSE) were compared by their abilities to act as post-treatment rinses for samples of 2024-T3 aluminum alloy, which had previously been coated by zinc phosphate. The first approach is conventionally used to improve corrosion protection, but alternatives are needed because of environmental concerns with Cr(VI). Variations in conditions for application of the final rinse, especially through changes in solution concentration, were compared by measuring polarization curves, which provide an indication of corrosion stability. These comparisons were related to coating morphology, which was studied using scanning electron microscopy (SEM), and to studies of chemical composition with X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray (EDX) spectroscopy. Immersion tests in NaCl solution were applied to post-treated zinc phosphate coatings that had been formed on mirror-polished alloy surfaces. Overall, the ...
Copper and its alloys generally display a severe reduction in ductility between roughly 300 and 600 degrees C, a phenomenon variously called intermediate temperature embrittlement or ductility trough behaviour. This review of the phenomenon begins by placing it in the wider context of the high-temperature fracture of metals, showing how its occurrence can be rationalised in simple terms on the basis of what is known of intergranular creep fracture and dynamic recrystallisation. Data in the literature are reviewed to identify main causes and mechanisms for embrittlement, first for pure copper, and then for monophase and multiphase copper alloys. Coverage then turns to the grain boundary embrittlement phenomenon, caused by the intergranular segregation of even minute quantities of alloying additions or impurities, which appears to worsen dramatically the intermediate temperature embrittlement of copper alloys. Finally, metal-induced embrittlement, including in particular liquid metal embrittlement,
The key to Orville and Wilbur Wrights historic 1903 flight was wing warping. Today, NASA engineers are developing a similar technique to increase the performance and efficiency of fixed-wing aircraft. The goal is to be able to bend and fold wings in-flight without using complex hydraulic systems or mechanical linkages. In the future, subsonic and supersonic aircraft equipped with the technology may weigh up to 80 percent less than aircraft that rely on traditional wing flaps. The Spanwise Adaptive Wing (SAW) project aims to validate . . .
WE43B magnesium is a magnesium alloy. Cited properties are appropriate for the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. WE43B is the ASTM designation for this material. M18432 is the UNS number.. It has a fairly high base cost among magnesium alloys. In addition, it has a very low thermal conductivity and a very low ductility.. The graph bars on the material properties cards below compare WE43B magnesium to other magnesium alloys (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means its 50% of the highest, and so on. ...
TY - JOUR. T1 - Outcomes of a Polytetrafluoroethylene Hybrid Vascular Graft with Preloaded Nitinol Stent at the Venous Outflow for Dialysis Vascular Access. AU - Habibollahi, Peiman. AU - Mantell, Mark P.. AU - Rosenberry, Trish. AU - Leeser, David B.. AU - Clark, Timothy W.I.. PY - 2019/2. Y1 - 2019/2. N2 - Background: To evaluate outcomes and patency of arteriovenous grafts (AVGs) created using Gore hybrid vascular grafts in hemodialysis patients with limited venous outflow or challenging anatomy. Materials and methods: A retrospective review was performed in two academic centers of all patients between July 2013 and December 2016 who underwent surgical AVG creation using a Gore hybrid vascular graft in a brachial artery to axillary configuration. Patient characteristics and comorbidities as well as graft patency, function, and subsequent need for percutaneous interventions were recorded. Results: Forty-six patients including 30 females (65.2%) and 16 males (34.8%) with a mean age of 63 ± 13 ...
The similarity in external appearance of the various alloys, along with the different combinations of elements used when making each alloy, can lead to confusion when categorizing the different compositions. There are as many as 400 different copper and copper-alloy compositions loosely grouped into the categories: copper, high copper alloy, brasses, bronzes, copper nickels, copper-nickel-zinc (nickel silver), leaded copper, and special alloys. The following table lists the principal alloying element for four of the more common types used in modern industry, along with the name for each type. Historical types, such as those that characterize the Bronze Age, are vaguer as the mixtures were generally variable.. ...
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Magnesium alloys[edit]. Magnesium alloys. A putative flux for soldering these alloys at low temperature is molten acetamide. ... Aluminum and its alloys[edit]. Aluminium and its alloys are difficult to solder due to the formation of the passivation layer ... The problem with preforms[which?] can be also sidestepped by depositing the solder alloy directly on the surfaces of the parts ... Fortunately some alloys are able to dissolve the surface oxides in their bulk when superheated by several degrees above their ...
Metal and alloys[edit]. Bismuth is used in metal alloys with other metals such as iron. These alloys are used in automatic ... Low-melting alloys, such as Bi-Cd-Pb-Sn alloy which melts at 70 °C, are also used in automotive and aviation industries. Before ... Other metal uses and specialty alloys[edit]. Many bismuth alloys have low melting points and are found in specialty ... it was long a component of low-melting typesetting alloys, where it compensated for the contraction of the other alloying ...
Of all the metallic alloys in use today, the alloys of iron (steel, stainless steel, cast iron, tool steel, alloy steel) make ... Shape-memory alloys. A shape-memory alloy (SMA) is an alloy that "remembers" its original shape and when deformed returns to ... High entropy alloys. High entropy alloys (HEAs) such as AlLiMgScTi are composed of equal or nearly equal quantities of five or ... An alloy may have a variable or fixed composition. For example, gold and silver form an alloy in which the proportions of gold ...
Composition and alloys[edit]. There are many different bronze alloys, but typically modern bronze is 88% copper and 12% tin.[16 ... The cost of copper-base alloys is generally higher than that of steels but lower than that of nickel-base alloys. ... Tin bronze was superior to arsenic bronze in that the alloying process could be more easily controlled, and the resulting alloy ... In the 20th century, silicon was introduced as the primary alloying element, creating an alloy with wide application in ...
Of all the metallic alloys in use today, the alloys of iron (steel, stainless steel, cast iron, tool steel, alloy steels) make ... Copper alloys have been known for a long time (since the Bronze Age), while the alloys of the other three metals have been ... Iron alloyed with various proportions of carbon gives low, mid and high carbon steels. An iron-carbon alloy is only considered ... Stainless steel is defined as a regular steel alloy with greater than 10% by weight alloying content of Chromium. Nickel and ...
Alloys[edit]. Main article: Solder alloys. Alloying element roles[edit]. Different elements serve different roles in the solder ... Solder (/ˈsoʊldər/,[1] /ˈsɒldər/[1] or in North America /ˈsɒdər/[2]) is a fusible metal alloy used to create a permanent bond ... 6 Alloys *6.1 Alloying element roles. *6.2 Impurities in solders *6.2.1 Board finishes vs wave soldering bath impurities ... High-tin tin-lead alloys have limited use as the workability range can be provided by a cheaper high-lead alloy.[16] ...
Alloys[edit]. Adding small amounts of CNTs to metals increases tensile strength and modulus with potential in aerospace and ... comparable to more expensive aluminium-lithium alloys.[2] ... 2.4 Alloys. *2.5 Coatings and films *2.5.1 Optical power ...
Nichrome alloys[edit]. Chromite, when alloyed with iron and nickel creates an alloy called nichrome. Nichrome is described as ... Alloy steel. References[edit]. *^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. Chromite (PDF). ... Due to the alloys that make nichrome, nichrome is seen to be heat resistant up to temperatures of 1250 °C (2282 °F). Due to the ... Nichrome alloys also have very good mechanical properties which allow for good oxidation and corrosion properties.[24] ...
Alloys[edit]. Thorium dioxide is used as a stabilizer in tungsten electrodes in TIG welding, electron tubes, and aircraft ... As an alloy, thoriated tungsten metal is not easily deformed because the high-fusion material thoria augments the high- ... typically contained in nuclear fuel rods clad with zirconium alloys. Thorium is not fissile (but is "fertile", breeding fissile ...
Alloys[edit]. Further information: Tantalum-tungsten alloys. The hardness and density of tungsten are applied in obtaining ... Tungsten, usually alloyed with nickel and iron or cobalt to form heavy alloys, is used in kinetic energy penetrators as an ... 1-4 K; mixing the two phases allows obtaining intermediate TC values.[20][21] The TC value can also be raised by alloying ... High-density alloys of tungsten with nickel, copper or iron are used in high-quality darts[63] (to allow for a smaller diameter ...
The alloy of 76% gold, 19% copper, and 5% aluminium yields a yellow color; the alloy of 76% gold, 18% copper and 6% aluminium ... Fired enamels adhere better to these alloys than to pure gold. Cadmium can also be added to gold alloys to create a green color ... Gold is rarely pure gold, even before another metal is added to make a white gold alloy and often contains a mercury alloy from ... As a result, white gold alloys can be used for many different purposes; while a nickel alloy is hard and strong, and, therefore ...
Brass is an alloy of copper and zinc. Bronze usually refers to copper-tin alloys, but can refer to any alloy of copper such as ... Alloys. Copper alloys are widely used in the production of coinage; seen here are two examples - post-1964 American dimes, ... See also: List of copper alloys. Numerous copper alloys have been formulated, many with important uses. ... Similarly, as discussed in copper alloys in aquaculture, copper alloys have become important netting materials in the ...
Alloy type. Tin. (%). Antimony. (%). Lead. (%). Comments Slugcasting alloy. 3. 11. 86. Ludlow/Intertype/Linotype composition ... The 12/20 alloy contains many mixed crystals of tin and antimony, these crystals constitute the hardness of the alloy and the ... Tin (Sn) It promotes the fluidity of the molten alloy and makes the type tough, giving the alloy resistance to wear. It is ... In Switzerland the company "Metallum Pratteln AG", in Basel had yet another list of type-metal alloys. If needed, any alloy ...
While iron alloyed with carbon is called carbon steel, alloy steel is steel to which other alloying elements have been ... MATDAT Database of Properties of Unalloyed, Low-Alloy and High-Alloy Steels - obtained from published results of material ... Low alloy steel is alloyed with other elements, usually molybdenum, manganese, chromium, or nickel, in amounts of up to 10% by ... Alloy steels[edit]. Stainless steels contain a minimum of 11% chromium, often combined with nickel, to resist corrosion. Some ...
Many alloy systems allow the ageing temperature to be adjusted. For instance, some aluminium alloys used to make rivets for ... While binary alloys are more easily understood as an academic exercise, commercial alloys often use three components for ... 2000-series aluminium alloys (important examples: 2024 and 2019, also Y alloy and Hiduminium) ... Alloy design[edit]. Precipitation strengthening is possible if the line of solid solubility slopes strongly toward the centre ...
Displayed at right is the color alloy orange. Alloy orange is one of the colors in the special set of metallic Crayola crayons ...
Structural alloy Hastelloy-N[edit]. A low chromium, nickel-molybdenum alloy, Hastelloy-N, was used in the MSRE and proved ... DeVan, Jackson H. "Effect of Alloying Additions on Corrosion Behavior of Nickel-Molybdenum Alloys in Fused Fluoride Mixtures." ... but all declined to submit lump-sum bids because of lack of experience with the new alloy. Consequently, all major components ...
High strength low alloy steels[edit]. *A441 - structural shapes and plates - (Superseded by A572) ... These steels have an alloy identification beginning with A and then two, three, or four numbers. The four-number AISI steel ... Corrosion resistant high strength low alloy steels[edit]. *A243 - structural shapes and plates. ... The properties of steel vary widely, depending on its alloying elements. The austenizing temperature, the temperature where a ...
Silver alloy - synergistic oxidation of carbon monoxide[edit]. Au-Ag alloy nanoparticles have been shown to have a synergistic ... Liu, Jun-Hong; Wang, Ai-Qin; Chi, Yu-Shan; Lin, Hong-Ping; Mou, Chung-Yuan (2005-01-01). "Synergistic Effect in an Au−Ag Alloy ... It is well known that gold nanoparticles only show catalytic properties for CO when they are ~3 nm in size, but alloyed ... When synthesized in an Au/Ag ratio from 3:1 to 10:1, the alloyed nanoparticles showed complete conversion when 1% CO was fed in ...
... is also produced intentionally, within some steels, by judicious addition of titanium to the alloy. TiN forms ... Additionally, TiN thin films are currently under consideration for coating zirconium alloys for accident-tolerant nuclear fuels ... "Wear coatings for industrial products". Diffusion Alloys. Archived from the original on 2013-05-19. Retrieved 2013-06-14. " ... titanium and titanium alloys. Its high Young's modulus (values between 450 and 590 GPa have been reported in the literature ) ...
Magnesium alloys. A putative flux for soldering these alloys at low temperature is molten acetamide. Acetamide dissolves ... Aluminium and its alloys are difficult to solder due to the formation of the passivation layer of aluminium oxide. The flux has ... Fortunately some alloys are able to dissolve the surface oxides in their bulk when superheated by several degrees above their ... The surface of the tin-based solder is coated predominantly with tin oxides; even in alloys the surface layer tends to become ...
In practice, the uranium was canned in aluminum; this too was studied, as were alloys with tin, which was used to solder the ... Efforts continued into 1944, and it was found that with a zinc chloride booster they could produce a zinc-thorium alloy. ... In particular, with water being used for cooling, there was speculation about alloys with high thermal conductivity and ... The Ames Project therefore studied uranium-copper alloys, which would occur where the uranium met the copper jacket. ...
For example, the common aluminium foils and beverage cans are alloys of 92% to 99% aluminium. The main alloying agents are ... As such, the strongest aluminium alloys are less corrosion-resistant due to galvanic reactions with alloyed copper, and ... Aluminium alloys well with most other metals (with the exception of most alkali metals and group 13 metals) and over 150 ... Aluminium's ability to form hard yet light alloys with other metals provided the metal with many uses at the time. During World ...
In condensed matter physics, the Slater-Pauling rule states that adding a element to a metal alloy will be reduce the alloy's ... Friedel, J. (1958). "Metallic alloys". Il Nuovo Cimento. Springer Science and Business Media LLC. 7 (S2): 287-311. Bibcode: ... and Co-metalloid alloys". Physical Review B. American Physical Society (APS). 29 (4): 1620-1632. Bibcode:1984PhRvB..29.1620M. ...
Alloys that are amenable to precipitation hardening, such as most aluminium alloys and titanium, can be hot forged, followed by ... High-strength aluminium alloys have the tensile strength of medium strong steel alloys while providing significant weight ... Commonly used alloys are AlSi1MgMn (EN AW-6082) and AlZnMgCu1,5 (EN AW-7075). About 80% of all aluminium forged parts are made ... Instead, most magnesium alloy parts for industry are produced by casting methods. The most common type of forging equipment is ...
Metal alloys. Electrical components, due to their predictable changes in electrical resistivity with regard to temperature. ... Superconductors, as components in alloys with other metals. Nickel has an important role in the biochemistry of organisms, as ...
"The Origin of Alloy 20". Rolled Alloys. "Carpenter". Connecticut Post. July 7, 1961. "In Accord With RCA". The New York Times. ... "PremoMet™ Alloy Seen as a Lower Cost Alternative to Cobalt-Containing Alloys" (Press release). Business Wire. December 3, 2009 ... In 1993, the company developed 14 alloys for knife blades. In January 1997, Carpenter acquired Dynamet, a titanium alloy ... "Beryllium-free Cobalt Alloy for High-load Bushings". ASM. March 2010. "Carpenter Technology Announces Acquisition of Amega West ...
Group members included Hardy Spicer; Laycock Engineering; Forgings & Presswork; Salisbury Transmission; Kent Alloys; Bound ...
The alloys normally contain 3% or 6% of rhenium. Second-generation alloys contain 3%; these alloys were used in the engines for ... Rhenium-molybdenum alloys are superconductive at 10 K; tungsten-rhenium alloys are also superconductive around 4-8 K, depending ... These alloys contain up to 6% rhenium, making jet engine construction the largest single use for the element. The second-most ... Tungsten-rhenium alloys are more ductile at low temperature, allowing them to be more easily machined. The high-temperature ...
Its high alloying content also gives it greater resistance to chloride stress corrosion cracking, but it is still susceptible. ... "904L Datasheet" (PDF). Rolled Alloys. "904L Datasheet" (PDF). ATI Metals. "Stainless Steel - Grade 904L (UNS N08904)". AZoM.com ...
The Alloy support team has been an enormous help to me during the implementation of Alloy Navigator. The team has outstanding ... Alloy Software Introduces Intelligent Relationship Mapping to Alloy Navigator Platform. New release helps organizations manage ... Alloy Software Introduces Intelligent Relationship Mapping to Alloy Navigator PlatformJuly 16, 2018 ... I like Alloy Support because the technicians are knowledgeable and help me get the job done. They are also very friendly and ...
Also known as: Humphreys Gold Co., Titanium Alloys Mfg. Co., Div. Of National Lead, Titanium Alloy Metals, Titanium Pigment Co. ... Public Comments on Titanium Alloys Manufacturing Documents. How to Submit Comments. Comments on Titanium Alloys Manufacturing ... All employees who worked in any area or building at Titanium Alloys Manufacturing from January 1, 1955, through December 31, ... To date, there are no open/active SEC petitions from Titanium Alloys Manufacturing. ...
Retrieved from "https://en.wiktionary.org/w/index.php?title=shape_memory_alloys&oldid=41644648" ...
High-entropy alloys have greatly expanded the compositional space for alloy design. In this Review, the authors discuss model ... Here, we review recent progress in understanding the salient features of high-entropy alloys. Model alloys whose behaviour has ... exceeding those of conventional alloys, and other outstanding high-entropy alloys are likely to be discovered in the future. ... For the past decade and a half, however, a new alloying strategy that involves the combination of multiple principal elements ...
Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is ... refers to low-alloy steels. Strictly speaking, every steel is an alloy, but not all steels are called "alloy steels". The ... Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its ... Alloying elements are added to achieve certain properties in the material. The alloying elements can change and personalize ...
Thus an alloy of 21-21 copper, and 78-79 tin, is not brittle ; but an alloy of 34-98 copper, and 65-02 tin is very brittle. ... In alloys of copper and tin-common bronze- an excess of tin renders the alloy soft, as would be expected, because it is the ... Thus an alloy of zinc 50, copper 49, was in hardness as compared with cast iron -604; while an alloy of copper 66, zinc 33, was ... When the copper is increased to make an alloy of 84-68 copper, and 15-32 tin, the brittleness is removed, and the alloy is very ...
Citation: Chen, R., Yang, F., and Lu, Y., "Impression Creep of Lightweight Alloys," SAE Int. J. Mater. Manuf. 3(1):120-124, ... Impression Creep of Lightweight Alloys 2010-01-0226. Conventional creep testing requires many samples and therefore is time ... In the present study, the creep behaviors of two lightweight magnesium alloys were studied by using impression creep tests in ...
So metal: New alloys can prevent hydrogen embrittlement inside nuclear reactors April 4, 2016 at 9:30 am Even the best alloys ... so we applied statistical thermodynamics to materials science and found a better way to dope zirconium alloys to use in fuel ...
The A206 aluminum alloy is expected to exhibit superior mechanical properties compared to the A356 aluminum alloy. In A206 ... Aluminum Alloys for Automotive Knuckle Castings 2000-01-1291. Knuckle castings for the automotive industry have traditionally ... Similarly, A206 alloy may show a fatigue advantage for the same reason. Regardless of the property values, both these aluminum ... This paper presents mechanical property information on both A206 and A356 aluminum alloys to assist engineers in the design of ...
Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended March 31, 2016. For more details, kindly ... Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended December 31, 2016. For more details, ... Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended December 31, 2015. For more details, ... Ranjeev Alloys Statement of Investor Complaint under Reg. 13(3) of SEBI (LODR) Regulations, 2015 for Quarter ended June 30, ...
Browse alloys articles on Geek.com for the latest reviews, news, pictures, information about downloads and pricing, and other ... The Latest in Alloys. Science! The Pentagon Investigated UFOs, and They Found Some Weird Stuff. By Daniel Starkey :: 12.21.2017 ...
Zirconium nanoparticles introduced into aluminium alloy powders control solidification during 3D printing, enabling the ... Aluminium alloy 7075 micropowder. Aluminium alloy 7075 micropowder was purchased from Valimet Inc. The powder consisted of Al ( ... Aluminium alloy 6061 micropowder. Aluminium alloy 6061 micropowder was purchased from Valimet Inc. The powder consisted of Al ( ... Aluminium alloys are a good demonstration platform for our approach, because the only printable aluminium alloys are based on ...
The first two are common to both alloys, whereas the third region was unique to the (FeCoNi)86Al7Ti7 alloy. This region was ... "Our alloys have both excellent strength and ductility because the alloy matrix is ductile, and the second-phase particles are ... In contrast to traditional alloys, the MCINP alloys exhibited a distinctive multi-stage work-hardening behavior. The group used ... Nanoscience & Nanomaterials , Metals & Alloys Multicomponent intermetallic nanoparticles strengthen high-entropy alloys. By ...
However, Schuh and his colleagues have developed a new nickel-tungsten alloy that they say is not only safer than chrome, but ... U.S. scientists say theyve created a new alloy to replace chrome as a protective shiny coating, thereby eliminating the ... Schuhs team showed nickel-tungsten alloys remain stable indefinitely at room temperature and are highly resistant to ...
PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 14/ ... PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 05/ ... PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 06/ ... PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 30/ ...
Quenched titanium-ruthenium alloys containing 0.25-4 at % ruthenium have been studied using X-ray diffraction analysis, optical ... In Ti-1.5 at % Ru and Ti-2 at % Ru alloys, a martensitic β → α″ transformation occurs. The quenched Ti-3 at % Ru alloy has a β ... Ti-Ru alloys structure α″ phase ω phase Original Russian Text © A.V. Dobromyslov, N.I. Taluts, 2018, published in Fizika ... A. V. Dobromyslov and V. A. Elkin, "β → α and β → ω transformations in Ti-Os alloys," Metall. Mater. Trans. A 30, 231-233 (1999 ...
Alloys not feasible by classical casting. However, the manufacture of components using ODS alloys is currently subject to ... Alloys from the laser printer. Rainer Klose Kommunikation. Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt In the ... Titan-Aluminum alloys are combining low density, high strength and oxidation resistance at elevated temperatures and are ... The aim of the awarded PhD thesis of Christoph Kenel was to develop a novel titanium aluminide (TiAl) alloy, particularly for ...
... alloy traditionally composed of copper and tin. Bronze is of exceptional historical interest and still finds wide applications ... Bronze, alloy traditionally composed of copper and tin. Bronze is of exceptional historical interest and still finds wide ... An alloy described in an 11th-century Greek manuscript in the library of St. Marks, Venice, cites a proportion of one pound ... Bronze is harder than copper as a result of alloying that metal with tin or other metals. Bronze is also more fusible (i.e., ...
... tin-based alloy used as a material from which domestic utensils were fashioned. A brief treatment of pewter follows. For full ... particularly with the elimination of the lead found in Roman and medieval alloys. Modern pewter ware is a high-tin alloy, ... Most pewter alloys are quite ductile and easily worked. Cold-working does not cause the metal to harden sufficiently to require ... The tinplate sheets of iron or steel dipped in molten tin or pewter (an alloy of tin and copper) were worked into a variety of ...
Template::Alloy::OperaUser3Contributed Perl DocumeTemplate::Alloy::Operator(3) NAME Template::Alloy::Operator - Operator role. ... See Template::Alloy for more details. OPERATOR LIST The following operators are available in Template::Alloy. Except where ... It also provides the play_operator method which is used by Template::Alloy::Play and Template::Alloy::Compile for playing out ... DESCRIPTION The Template::Alloy::Operator role provides the regexes necessary for Template::Alloy::Parse to parse operators and ...
Posted in Updates , Tagged align, alignment, alloy, aluminum, bicycle, carbon, carbon fiber, frame, lugged, maintenance, repair ... Posted in Updates , Tagged adhesive, alloy, aluminum, Barellia, bicycle, bottom bracket, braze, brazing, break, Cannondale, ... Posted in Updates , Tagged adhesive, alloy, aluminum, bicycle, braze, brazing, carbon fiber, carbon fibre, composite, corrosion ... Tag Archives: alloy Bicycle frame fatigue-resistance testing. Posted on October 15, 2015 by John ...
Alloy Software, Inc. announces the immediate release of Alloy Navigator™ 5. Based on industry best practices, Alloy ... Alloy Software, Inc. announces the immediate release of Alloy Navigator™ 5. Based on industry best practices, Alloy Navigator™ ... Alloy Navigator™ 5 is fully scalable to handle the most complex business processes, yet flexible to support the ever-changing ... Alloy Navigator™ 5 enables IT departments to implement a service support and asset management system that is closely aligned ...
... Goto Sponge NotDistinct Permalink An Entity of Type : skos:Concept, within Data Space : dbpedia.org ...
These alloys are produced utilizing an induction melting & alloying process followed by static mold or direct chill continuous ... formed into particular alloying compounds Milwards line of master alloys for the aluminum industry include grain refiners, ... Milward manufactures aluminum and copper based master alloys for industries that melt and cast aluminum and copper metals. ... Master alloys are precisely calculated combinations of metal elements, occasionally with chemical additives, ...
Has anyone had alloys painted before? Scuffed one of mine the other day so going to get them refurbed but also painted black. ... Has anyone had alloys painted before?. Scuffed one of mine the other day so going to get them refurbed but also painted black. ... If youre getting the alloys powder coated, they should be left to fully cure for 2-3 days before having tyres mounted on them. ... If youre getting the alloys powder coated, they should be left to fully cure for 2-3 days before having tyres mounted on them ...
... sampling and acceptance tests of zinc and zinc alloys, as well as of zinc alloy castings. ... Standardization of definitions, classifications, quality, sampling and acceptance tests of zinc and zinc alloys, as well as of ...
Copper Alloy Sales Higher: Sales in the Copper Alloy division also were higher Q/Q and Y/Y. In the quarter, sales of $2.7 ... ABOUT IBC ADVANCED ALLOYS CORP.. IBC is a leading beryllium and copper advanced alloys company serving a variety of industries ... Copper Alloys posted a net loss of $366,000 in the quarter, which compared to a loss of $548,000 in the prior-year period. The ... In the Copper Alloys division, sales in the quarter of $3.6 million were 31% higher than sales of $2.7 million in fiscal Q2 of ...
Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
  • Released January 2018, the all-new Trimble Alloy™ reference receiver is ready to take on the requirements of any real-time network, in any environment, anywhere in the World. (trimble.com)
  • In the present study, the creep behaviors of two lightweight magnesium alloys were studied by using impression creep tests in the temperature range of 408-443K and under the punching stress range of 1.68-60.4 MPa. (sae.org)
  • The density of magnesium is very low, so alloys that are made mainly from it are very light. (everything2.com)
  • The VW Beetle contains a lot of magnesium alloy parts. (everything2.com)
  • The Company also produces Beryllium-Aluminum alloys designed to control oxidation and reduce magnesium loss. (tms.org)
  • An aluminum casting alloy contains 0.5 to 2.0 w. % magnesium max. (google.com)
  • 4. Aluminum casting alloy according to claim 1 , wherein the alloy contains 0.6 to 1.2 weight % magnesium. (google.com)
  • Although the range of l to 80 ppm for magnesium and the upper limit of 900 ppm calcium of the claimed alloy were disclosed as end- points of preferred ranges, the lower limit of 690 ppm calcium was only taken from an example for a specific alloy (melt No. 8). (epo.org)
  • The Automotive Alloys market in the U.S. is estimated at US$40.2 Billion in the year 2020. (yahoo.com)
  • For the past decade and a half, however, a new alloying strategy that involves the combination of multiple principal elements in high concentrations to create new materials called high-entropy alloys has been in vogue. (nature.com)
  • Nevertheless, a few high-entropy alloys have already been shown to possess exceptional properties, exceeding those of conventional alloys, and other outstanding high-entropy alloys are likely to be discovered in the future. (nature.com)
  • Here, we review recent progress in understanding the salient features of high-entropy alloys. (nature.com)
  • We also address the vast compositional space that remains to be explored and outline fruitful ways to identify regions within this space where high-entropy alloys with potentially interesting properties may be lurking. (nature.com)
  • Fig. 4: A mechanistic approach to the design of high-entropy alloys. (nature.com)
  • Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes. (nature.com)
  • Cantor, B. Multicomponent and high entropy alloys. (nature.com)
  • Miracle, D. B. & Senkov, O. N. A critical review of high entropy alloys and related concepts. (nature.com)
  • Shun, T. T., Hung, C. H. & Lee, C. F. Formation of ordered/disordered nanoparticles in FCC high entropy alloys. (nature.com)
  • An understanding of high entropy alloys from phase diagram calculations. (nature.com)
  • Lately, researchers have achieved some success with high-entropy alloys (HEA), those with five or more elements in roughly equal proportions. (cambridge.org)
  • This paper describes some underlying principles of multicomponent and high entropy alloys, and gives some examples of these materials. (mdpi.com)
  • We selected the nucleants on the basis of crystallographic information and assembled them onto 7075 and 6061 series aluminium alloy powders. (nature.com)
  • And also listed Aluminium Alloy upstream raw materials equipments and down stream clients survey analysis and Aluminium Alloy marketing Aluminium Alloys industry development trend and proposals. (slideshare.net)
  • In the end, The report introduced Aluminium Alloy new project SWOT analysis Investment feasibility analysis investment return analysis and also give related research conclusions and development trend analysis on Global and China Aluminium Alloy industry. (slideshare.net)
  • In a word, it was a depth research report on Global and China Aluminium Alloy industry. (slideshare.net)
  • And thanks to the support and assistance from Aluminium Alloy industry chain related technical experts and marketing engineers during Research Team survey and interviews. (slideshare.net)
  • 3. 12.1 Aluminium Alloy Project Swot Analysis 12.2 Aluminium Alloy New Project Investment Feasibility Analysis chapter Thirteen Global And China Aluminium Alloy Industry Research Conclusions ResearchMoz(http://www.researchmoz.us/) is the one stop online destination to find and buy market research reports & Industry Analysis. (slideshare.net)
  • 1060 aluminium alloy is an aluminium-based alloy in the "commercially pure" wrought family (1000 or 1xxx series). (wikipedia.org)
  • It is fundamentally very similar to 1050 aluminium alloy, with the difference coming down to 0.1% aluminium by weight. (wikipedia.org)
  • M. Enomoto and M. Fujita, "Analysis of the composition of a plates isothermally formed in titanium binary alloys," Metall. (springer.com)
  • In metal-based additive manufacturing, application of a direct energy source, such as a laser or electron beam, to melt alloy powders locally results in solidification rates between 0.1 m s −1 and 5 m s −1 , an order of magnitude increase over conventional casting processes. (nature.com)
  • Considering the oxide dispersoids, Kenel and his colleagues hypothesized that laser-based AM can be used successfully to create bulk samples from oxide dispersoid-containing powders, as the very short melting time and very rapid solidification would keep the oxide dispersoids well dispersed within the alloy grains. (idw-online.de)
  • Our beaded metals and alloys are uniquely engineered powders that are processed into smooth, spherical particles with lower surface areas relative to traditional powders. (sigmaaldrich.com)
  • Metal Powders by Crown Ferro Alloys Pvt. (slideshare.net)
  • Our spontaneous performance and confident approach in offering the excellent range of Ferro Silicon Powder,Extra High Carbon Ferro Chrome Powder,Ferro Titanium Powder,Ferro Tungsten Powder,Ferro Niobium Powder, Metal Powders that has made us to deepen our roots in the market.We Crown Ferro Alloys Pvt. (slideshare.net)
  • Kennametal ISA is a leading global supplier and converter of ultra-pure, premium-quality custom metal alloys and metal-alloy powders. (kennametal.com)
  • These alloys can be provided as ingots, chunks or powders. (kennametal.com)
  • All new butted 6061 alloy triple triangle frame design featuring floating seat stays, internal cable routing, Stealth dropper post routing, forged drop outs for thru-axle w chainstay mounted disc brake, Boost 148mm rear spacing, tapered 1 1/8"- 1 ½" head tube. (gtbicycles.com)
  • Liu says that the research group's general approach was to start with a ternary iron-cobalt-nickel alloy with moderate strength and ductility. (cambridge.org)
  • We offer a diverse portfolio of high-purity metals, binary and ternary metal compounds, magnetic alloys, metal oxides, nanomaterials, and organometallic precursors in various forms, compositions, dispersions, particle sizes and weights for all your research and commercial applications. (sigmaaldrich.com)
  • For the guide wire application, a distal core section is made of the nitinol alloy with a ternary element addition thus improving radiopacity over that of distal core section made from a binary nickel-titanium alloy. (google.ca)
  • 5. The guide wire of claim 1, wherein the alloy comprises about 30 to about 52 percent titanium and the balance nickel and up to about 10 percent of one or more additional ternary alloying elements. (google.ca)
  • The alloys with different compositions in the Al-rich corner of the Al-Co-Y ternary system were prepared by conventional casting and further processed by melt-spinning technique. (hindawi.com)
  • It was reported that Al-Ni-Y ternary amorphous alloys exhibit better mechanical properties, and their thermal stability and glass forming ability (GFA) can be substantially improved with the addition of Co. And it has been found that quaternary Al 85 Ni 5 Y 8 Co 2 (at. (hindawi.com)
  • That is why the investigations on components of Al-based amorphous alloys are focused on the Al-Ni-Y ternary system. (hindawi.com)
  • On the other hand, just a few works have been reported for the other ternary system, Al-Co-Y alloys. (hindawi.com)
  • 19 , 20 ] also investigated the glass formability in the melt-spun Al-Co-Y alloys by the microstructure evolution and reported that Al 88 Co 5 Y 7 alloy with the thickness of 230 μ m has the best GFA of the Al-Co-Y ternary systems. (hindawi.com)
  • In A206 aluminum alloy higher strength is achieved both at room temperature and at elevated temperatures because of higher copper and lower silicon contents. (sae.org)
  • Schuh's team showed nickel-tungsten alloys remain stable indefinitely at room temperature and are highly resistant to decomposition when heated. (redorbit.com)
  • The topic is very challenging, since TiAl alloys are inherently brittle at room temperature, and the rapid solidification conditions during AM can lead to complex phase transformation sequences, pronounced element segregation and cracking. (idw-online.de)
  • In the pb-1 sb alloy, polygonized substructure was developed by initial rolling at room temperature, annealing at 220 deg c and then rolling in one pass to 5 percent reduction at 175 deg c and air cooling. (cdc.gov)
  • 1. A cast and forged titanium alloy with ductility at room temperature and good high temperature strength, consisting essentially of by weight percent 31-36 aluminum, 0.1-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0.1V, bal Ti). (google.co.uk)
  • 2. A cast and forged titanium alloy with ductility at room temperature and good high temperature strength, consisting essentially of by weight percent 34-36 aluminum, 0.7-2.0 vanadium, balance titanium (in atomic percent, about: 48-50Al, 0.5-1.5V, bal Ti). (google.co.uk)
  • The effects of the alloying elements Al and Ti, which are added in AlCoCrFeNi alloy, have been widely investigated because of their excellent room-temperature mechanical properties, which are even superior to most of the high-strength bulk amorphous alloys [11,18]. (thefreedictionary.com)
  • [4] As a guideline, alloying elements are added in lower percentages (less than 5%) to increase strength or hardenability, or in larger percentages (over 5%) to achieve special properties, such as corrosion resistance or extreme temperature stability. (wikipedia.org)
  • Oxide dispersion strengthened (ODS) alloys are a class of materials that offer an unmatched combination of deformation-, creep-, coarsening- oxidation- and corrosion resistance at temperatures up to 1,000 °C. (idw-online.de)
  • Metal compounds can be combined to create a resulting heterogenous alloy that has enhanced properties, such as increased strength or hardness, high-temperature resistance, good thermal conductivity, or chemical corrosion resistance. (sigmaaldrich.com)
  • Alloys that provide for a long-term stable implant need to have a high level of corrosion resistance as well as certain mechanical properties (see Immune Response to Implants ). (medscape.com)
  • Grupp et al reported their experience regarding failed modular titanium neck adapters, in combination with a titanium alloy modular short hip stem, after hip arthroplasty, as a result of fretting or corrosion. (medscape.com)
  • Because the alloy of the implant is bathed in body fluid, a low rate of corrosion and relative inertness are imperative in the material. (medscape.com)
  • CuNi and NiCu are ideal for marine uses as these alloys are resistant to corrosion. (yahoo.com)
  • Dave Bolcar, Vice President of engineering and design for Newport News Shipbuilding said, "Over the past few years, our companies have collaborated to support the qualification of metal additive manufacturing technologies in order to build parts for naval warships and conducted research and development of a corrosion performance design guide for direct metal printing of a nickel-based alloy. (yahoo.com)
  • The company claims that, as a result, its alloys feature a higher yield strength, hardness, corrosion- and wear-resistance, and superior strength/weight ratio to traditional metals and alloys. (eweek.com)
  • You already know that nickel alloys offer wonderful corrosion resistance. (dailystrength.org)
  • In recent years, a series of investigations on the formation, structure, and properties of Al-based amorphous alloys have been carried out with an aim of developing high-strength materials with good ductility and high corrosion resistance [ 2 - 6 ]. (hindawi.com)
  • Rolled Alloys is a supplier in the metal industry for both heat resistant and corrosion resistant alloys. (wikipedia.org)
  • while an alloy of copper 66, zinc 33, was only 472 in hardness. (scientificamerican.com)
  • The common alloys employed for making journal boxes are much dearer than a brass composed of zinc 50, and copper 56, and yet they are no harder. (scientificamerican.com)
  • For heavy bearing boxes an alloy of copper 82-05, tin 12-82, zinc 5-13, is common. (scientificamerican.com)
  • Standardization of definitions, classifications, quality, sampling and acceptance tests of zinc and zinc alloys, as well as of zinc alloy castings. (iso.org)
  • for example, brass, which is an alloy of copper and zinc. (everything2.com)
  • For easily fusing, make an alloy of equal parts of brass and zinc. (dictionary.com)
  • From Abstract: 'This monograph reviews available information on the production, properties, and uses of high-purity and commercial forms of nickel, and on the properties and applications of its important alloys, both ferrous and non ferrous. (unt.edu)
  • Microstructure characterization of AlxCoCrCuFeNi high-entropy alloy system with multi-principal elements. (nature.com)
  • The fundamental aspects include both the microstructure development and characterization, and the rheology of alloy slurries with special attention to both experimental determination and modeling. (springer.com)
  • The microstructure and the thermal behavior of the alloys were analyzed by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and differential thermal analysis (DTA). (hindawi.com)
  • The previous article in this series (1) 1 discussed the effects of nuclear radiation on iron-base alloys, particularly carbon and stainless steels. (astm.org)
  • 75-125) The present invention relates to measuring or indicating instruments of the magnetic type and, more particu larly, to compensator elements comprised of special iron base alloys capable of compensating for errors in the readings of the instruments when the latter are subjected to variations in temperature. (google.com)
  • It has now been discovered that the transformation temperature can be maintatined at a desired low level and the Curie point can be controlled in iron-base alloys which contain special amounts of nickel and copper. (google.com)
  • phase in binary titanium-base alloys with d-Metals of V-VIII Groups," Mater. (springer.com)
  • The density-corrected stress rupture capabilities of these materials are shown in FIG. 1 together with the best commercially available titanium base alloys. (google.co.uk)
  • Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended December 31, 2016. (indiatimes.com)
  • Ranjeev Alloys Ltd has informed BSE regarding Quarterly Statement on Investor Complaints / Grievances Redressal Mechanism for the Quarter ended December 31, 2016, under Regulation 13(3) of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. (indiatimes.com)
  • Milward manufactures aluminum and copper based 'master alloys' for industries that melt and cast aluminum and copper metals. (tms.org)
  • Master alloys are precisely calculated combinations of metal elements, occasionally with chemical additives, formed into particular alloying compounds Milward's line of master alloys for the aluminum industry include grain refiners, modifiers, and hardeners. (tms.org)
  • Alloy steels are broken down into two groups: low alloy steels and high alloy steels. (wikipedia.org)
  • [1] [2] Most commonly, the phrase "alloy steel" refers to low-alloy steels. (wikipedia.org)
  • The simplest steels are iron (Fe) alloyed with carbon (C) (about 0.1% to 1%, depending on type). (wikipedia.org)
  • However, the term "alloy steel" is the standard term referring to steels with other alloying elements added deliberately in addition to the carbon. (wikipedia.org)
  • The significant alloy kinds consist of iron-nickel-chromium alloys, stainless-steels, nickel-chromium alloys, nickel-chromium-iron alloys, low expansion alloys, magnetic alloys, and copper-nickel/nickel-copper alloys. (dailystrength.org)
  • Even the best alloys can't last forever, so we applied statistical thermodynamics to materials science and found a better way to dope zirconium alloys to use in fuel rod cladding. (extremetech.com)
  • So far, various Al-based amorphous alloys have been produced by rapid solidification processing. (hindawi.com)
  • alloy has the highest GFA in Al-based amorphous alloys [ 13 ]. (hindawi.com)
  • This alloy stood out from the rest because it had remarkable high-temperature properties but had poor casting behavior and wasn't affordable due to expensive nickel and cobalt additions," Shyam said. (ornl.gov)
  • Padmanabh Alloys & Polymers Board Meeting Intimation for Considering Un-Audited Financial Results For Half Year Ended On 30/09/2019. (indiatimes.com)
  • PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 14/11/2019 ,inter alia, to consider and approve un-audited financial results for half year ended on 30/09/2019. (indiatimes.com)
  • Padmanabh Alloys & Polymers Intimation Of Annual General Meeting To Be Held On 30Th September, 2019. (indiatimes.com)
  • Padmanabh Alloys & Polymers Board Meeting Intimation for Considering And Approving Un-Audited Financial Results For First Quarter Ended 30.06.2019. (indiatimes.com)
  • The Engineered Materials division ("EMC"), which produces advanced beryllium-aluminum ("BeAl" alloy products for commercial and defense markets, achieved profitability in the quarter on sales of $1.8 million, a 55% increase over the prior-year period. (yahoo.com)
  • Recently, several new high volume automotive knuckle castings have been introduced using A356 aluminum alloy with T-6 temper. (sae.org)
  • The A206 aluminum alloy is expected to exhibit superior mechanical properties compared to the A356 aluminum alloy. (sae.org)
  • A rotary forged wheel is created from a specialized aluminum alloy. (prweb.com)
  • Alloying has long been used to confer desirable properties to materials. (nature.com)
  • Model alloys whose behaviour has been carefully investigated are highlighted and their fundamental properties and underlying elementary mechanisms discussed. (nature.com)
  • Fig. 2: Damage-tolerant properties of the Cantor CrMnFeCoNi alloy. (nature.com)
  • Fig. 5: Mechanical properties of the dual-phase, high-entropy, transformation-induced plasticity alloy Fe 50 Mn 30 Co 10 Cr 10 . (nature.com)
  • Wang, F. J. & Zhang, Y. Effect of Co addition on crystal structure and mechanical properties of Ti0.5CrFeNiAlCo high entropy alloy. (nature.com)
  • Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties . (wikipedia.org)
  • Because of the ferromagnetic properties of iron, some steel alloys find important applications where their responses to magnetism are very important, including in electric motors and in transformers. (wikipedia.org)
  • Alloying elements are added to achieve certain properties in the material. (wikipedia.org)
  • The alloying elements can change and personalize properties - their flexibility, strength, formability, and hardenability. (wikipedia.org)
  • In this way some specific properties are improved, making the alloy more attractive than the pure metal. (wiley.com)
  • The aim of the awarded PhD thesis of Christoph Kenel was to develop a novel titanium aluminide (TiAl) alloy, particularly for use in beam-based additive manufacturing technologies, and to include nano-sized oxide dispersoids to improve their high temperature mechanical properties. (idw-online.de)
  • Alloy has been extremely savvy about developing properties that cross multiple platforms. (variety.com)
  • However, in the manufacture of these alloys considerable difficulty is encountered in producing alloys of consistent properties, that is to say, for example, the Curie point varies considerably from one heat to another, so that an alloy which should meet the required specification fails to do so. (google.com)
  • It has been found that the irregularities in the properties of the alloys heretofore employed are largely caused by variations in the carbon and silicon contents, particularly in the former. (google.com)
  • Composite stems combine the physical properties of alloys with those of other biomaterials. (medscape.com)
  • By combining several metallic elements together in alloys, improved properties can be achieved beyond those of a single element. (medscape.com)
  • The alloys used in orthopedic surgery need to have certain specific properties. (medscape.com)
  • Substructure Improves Properties of Lead Alloys. (cdc.gov)
  • Suitable thermal and mechanical treatments will produce extensive rearrangements of the atoms in metals and alloys, and corresponding marked variations in physical and chemical properties. (elsevier.com)
  • Titanium alloys have found wide use in gas turbines in recent years because of their combination of high strength and low density, but generally, their use has been limited to below 600 C. by inadequate strength and oxidation properties. (google.co.uk)
  • To be useful at higher temperatures, titanium alloys need the proper combination of properties. (google.co.uk)
  • It is seen that prior titanium alloys had inferior properties to nickel alloys. (google.co.uk)
  • Complex machinery is required to spin the initial casting while under intense pressure, fundamentally altering the molecular properties of the alloy. (prweb.com)
  • Metals and alloys form a unique category of materials as they can circumvent disadvantages of ceramics (such as low toughness) and polymers (such as low elastic modulus and high temperature capabilities) and provide various combination of properties enabling their use in a wide spectrum of applications. (scirp.org)
  • The residential properties of nickel alloy make it an excellent choice for many sectors. (dailystrength.org)
  • Since you recognize the properties of nickel alloys, you need to also remember the significant alloy kinds. (dailystrength.org)
  • Alloy Digital, a unit of New York-based Alloy, runs properties targeting similar audiences, including AlloyTV, Gurl.com and Teen.com. (thenextweb.com)
  • Some of the common alloys used in fittings and valves include C37700, C84400, C83600, and C92200, he says. (asme.org)
  • A federal law to further reduce the amount of lead in drinking water has manufacturers of copper alloy plumbing fixtures, fittings and valves replacing their products with ones manufactured with new copper alloys that do not contain lead. (asme.org)
  • The conference was purposely designed to succinctly cover experimental and the- oretical aspects of magnetic and non-magnetic alloys, surfaces, thin films and nanos- tructures. (springer.com)
  • But it can become a complex and more costly process if manufacturers have to produce essentially the same product using current methods and materials in addition to different alloys and new tooling, patterns, and core boxes. (asme.org)
  • The extensive use in modern times of metallic alloys is related to the availability and success at the beginning of the 20th century of several different alloys made of the noble metals. (medscape.com)
  • However, lightweight alloys are still most desirable, as they inherently reduce stresses when used in rotating components. (google.co.uk)
  • The new lead-free products are giving standards-setting organizations pause because the lead-free alloys have not been fully vetted for high-pressure use. (asme.org)
  • Alloy Navigator™ 5 offers a robust and comprehensive framework for IT service delivery and support, traditionally available only in high-cost enterprise-level products, yet is competitively priced. (prweb.com)
  • Products to meet the process requirements of many stainless steel and high alloy welding applications. (lincolnelectric.com)
  • While lead (Pb) managed to fill this role for most soldering applications, the phasing out of lead from products, as well as new requirements for increasingly more fine-pitched components have required the development of new solder alloys that can fill this role. (hackaday.com)
  • Traditional engineering resins and polymer alloys/blends have been "around" for decades and, yet, there are few studies that analyze in detail all of the major materials involved in terms of plant capacities, markets by application, new technologies and products, and rationales for anticipated growth. (redorbit.com)
  • Apple products could become a little lighter and a lot tougher, after the company signed an agreement with Liquidmetal Technologies to use the latter's metal alloys in their products. (eweek.com)
  • Regardless of the property values, both these aluminum alloys are suitable for automotive casting production usage and this this information is intended to assist suspension a knuckle designer in switching from iron to aluminum. (sae.org)
  • While major work was performed in the 1950's and 1960's on lightweight titanium alloys for higher temperature use, none have proved suitable for engineering application. (google.co.uk)
  • The aluminum casting alloy is particularly suitable for diecasting and thixocasting or thixoforging. (google.com)
  • 0.2 weight %, wherein said alloy is suitable for thixocasting or thixoforging. (google.com)
  • Affordable, lightweight and capable of withstanding temperatures 100 degrees Celsius higher than commercially available automotive cast alloys, ACMZ is proving to be suitable for the next generation of internal combustion engines, enabling the industry to advance toward its target of 54.5 miles per gallon by 2025. (ornl.gov)
  • [5] The alloying elements tend to form either solid solutions or compounds or carbides. (wikipedia.org)
  • The two model alloys explored have the overall compositions (FeCoNi) 86 Al 7 Ti 7 and (FeCoNi) 86 Al 8 Ti 6 . (cambridge.org)
  • Disclosed are alloys having weight percent compositions of 31-36 aluminum, 0-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0-3V, bal Ti). (google.co.uk)
  • We have pride in our established expertise in handling a wide range of metal & alloy compositions. (kennametal.com)
  • Titan-Aluminum alloys are combining low density, high strength and oxidation resistance at elevated temperatures and are therefore of high technical relevance e.g. in aerospace engineering. (idw-online.de)
  • As is well known to those skilled in the art, certain magnetic iron-nickel alloys are particularly useful in making indicating instruments, such as magnetic speedometers, almost completely independent of variations in temperature over an unusually wide range of temperatures. (google.com)
  • If the carbon content is merely reduced, the martensitic transformation temperature is raised so that the alloy irreversibly loses its high permeability if exposed to the low temperatures to which it is often liable to be subjected in use. (google.com)
  • Cast and forged titanium alloys suited for use at temperatures over 600 C. are based on TiAl gamma phase structure. (google.co.uk)
  • Useful alloys have about 1.5% or greater tensile ductility at temperatures of 260 C. and below, thereby making them fabricable and suited for engineering applications. (google.co.uk)
  • The present invention relates to titanium alloys usable at high temperatures, particularly those of the TiAl gamma phase type. (google.co.uk)
  • Most nickel alloys demonstrate strength, longevity, as well as dependability even in toughest atmospheres at high temperatures. (dailystrength.org)
  • 17] have introduced four criteria that have to be satisfied in the selection process of alloying elements in order to obtain castable, precipitation-strengthened aluminum alloys with both high stability and strength at elevated temperatures. (thefreedictionary.com)
  • Current alloys inhibit engine efficiency because they soften at the peak temperatures present in highly efficient advanced engines. (ornl.gov)
  • Wrought Alloys with Manganese (3XXX series and 8006 type) 1.7. (elsevier.com)
  • Al-Mg-Si Wrought Alloys of 6XXX Series 2.5. (elsevier.com)
  • Al-Mg-Mn Wrought and Casting Alloys 4.6. (elsevier.com)
  • Rolled Alloys was founded in 1953 on the introduction of wrought RA330 alloy as a replacement for cast HT alloy. (wikipedia.org)
  • As a wrought alloy, it is typically formed by extrusion or rolling. (wikipedia.org)
  • The remainder of the Alloy management team is expected to stay in place, including Alloy Entertainment toppers Leslie Morgenstein and Bob Levy, who have shepherded the company's book-to-TV adaptations, which also include ABC Family's new series "Pretty Little Liars. (variety.com)
  • He reports to Alloy Entertainment topper Leslie Morgenstein. (variety.com)
  • Apple's future iPods, iPads and Macs could be super-durable and lightweight, after the company signed a deal with Liquidmetal Technologies to license the latter's IP for a specialized metal alloy. (eweek.com)
  • Since then, other manufactures followed the lead and implemented lines of high tin sheet metal alloy. (wikipedia.org)
  • Chain Tsuan Liu of the City University of Hong Kong together with colleagues in Hong Kong and other institutions in China have now brought the spirit of HEAs to another materials frontier, nanoparticles, to make quinary alloys laced with multicomponent intermetallic nanoparticles (MCINPs), thereby simultaneously achieving high strength and ductility. (cambridge.org)
  • Structure and composition of a two-phase quinary alloy containing multicomponent intermetallic nanoparticles (MCINPs). (cambridge.org)
  • Multicomponent Phase Diagrams: Applications for Commercial Aluminum Alloys aims to apply multi-component phase diagrams to commercial aluminum alloys, and give a comprehensive coverage of available and assessed phase diagrams for aluminum-based alloy systems of different dimensionality. (elsevier.com)
  • Different types of multicomponent alloy and different methods of accessing multicomponent phase space are discussed. (mdpi.com)
  • In the future, new designer alloys for aerospace applications can be manufactured using the 3-D laser melting process (Additive Manufacturing). (idw-online.de)
  • This book presents the state of the art concerning the fundamental aspects of semi-solid processing of alloys and composites, together with the industrial applications. (springer.com)
  • With tough IP68 housing, and modernized satellite tracking Trimble Alloy receiver can also be used as a campaign receiver for post-processing, as a Continuously Operating Reference Station (CORS) receiver or portable base station for Real-time Kinematic (RTK) applications - and even as a scientific reference station. (trimble.com)
  • The increasing use of aluminium alloys in high demand applications has lead to the development of a number of surface treatment technologies designed to improve hardness and wear characteristics. (diva-portal.org)
  • This implies that nickel can be alloyed with a lot of metals thus the diverse variety of applications. (dailystrength.org)
  • Alloying PET and PE doesn't make economic sense if you start with virgin PET, but it pays off as a use for inexpensive waste streams like colored PET and barrier PET film scrap that normally find only low-value applications or are thrown away. (thefreedictionary.com)
  • but an alloy of 34-98 copper, and 65-02 tin is very brittle. (scientificamerican.com)
  • On the other hand, an increased quantity of copper-from but one-third to that of the quantity of tin in the bronze, up until it (the copper) is four times the quantity of tin-renders the alloy brittle, a result which would not be expected, judging from the nature of the metals in their simple conditions. (scientificamerican.com)
  • This makes the metal harder and more brittle than a single-phase alloy, and also affects the way the metal responds to hardening by hammering and lathing, and greatly restricts the use of mechanised techniques of manufacture. (wikipedia.org)
  • The object of the authors of this paper was to present something reliable and usefal regarding the hardness of alloys. (scientificamerican.com)
  • Every person is familiar with regard to the comparative hardness of these two bodies, but very few are acquainted with the comparative hardness of other bodies, especially metals and their alloys, although a scale of hardness has long been adopted among mineralogists. (scientificamerican.com)
  • The data is not there to support high-pressure, high-temperature' alloys, says Mark Clark, a codes and standards engineer with NIBCO INC., Elkhart, IN. (asme.org)
  • Basically, useful high temperature titanium alloys must at least outperform those metals they are to replace in some respects, and equal them in all other respects. (google.co.uk)
  • A cylinder head made of lightweight, high-temperature ACMZ, a new suite of aluminum-based alloys developed by researchers at ORNL. (ornl.gov)
  • H. J. Lee and H. I. Aaronson, "Eutectoid Decomposition Mechanisms in Hypoeutectoid Ti-X Alloys," J. Mater. (springer.com)
  • Huang, P. K., Yeh, J. W., Shun, T. T. & Chen, S. K. Multi-principal-element alloys with improved oxidation and wear resistance for thermal spray coating. (nature.com)
  • Early soft soldering used pure tin (Sn), yet gradually alloys were sought that would fix issues like thermal cycling, shock resistance, electron migration, and the development of whiskers in tin-based alloys. (hackaday.com)
  • His research is combining simulations that model atomic interactions and experiments involving real-time ion irradiation exposure and mechanical testing to understand the fundamental mechanisms responsible for the alloys' thermal stability, radiation tolerance and mechanical performance. (stonybrook.edu)
  • Rotary forging results in a wheel that is both dramatically lighter weight than a conventional cast alloy wheel, while also being stronger. (prweb.com)
  • The alloys were manufactured by conventional and high speed solidification techniques, and their macroscopic, microscopic and nanoscale structures were studied by optical, X-ray and electron microscope methods. (mdpi.com)
  • 6. The guide wire of claim 1, wherein the superelastic alloy includes a nickel-titanium alloy. (google.ca)
  • N. I. Taluts, A. V. Dobromyslov, and V. A. Elkin, "Structural and phase transformations in quenched and aged Zr-Ru alloys," J. Alloys Compd. (springer.com)
  • All metallic alloys have a modulus of elasticity significantly higher than that of bone. (medscape.com)
  • Metallic alloys have been instrumental through the ages in shaping the progress of human civilization. (scirp.org)
  • The type of carbide that chromium forms depends on the amount of carbon and other types of alloying elements present. (wikipedia.org)
  • These alloys generally contain about 29 to 31% nickel and usually much smaller amounts of chromium and normally always contain small amounts of carbon and silicon. (google.com)
  • Indeed, the carbon content of the alloys normally used is about 0.2%, though it may vary from this by amounts which have been considered negligible but which are in fact important. (google.com)
  • The carbon content, as will be ap preciated by those skilled in the art, is diflicult to control within narrow limits, particularly if the alloy is made by melting. (google.com)
  • 4. The alloys of claims 1 or 2 further having up to 0.1 weight percent carbon to improve creep rupture strength. (google.co.uk)
  • Substructure in a pb-1.4 Cd-1.6 Sb alloy increases creep resistance at 700 psi by a factor of 3.6 X 104 and increases tensile strength by approximately 21 percent without serious loss of ductility. (cdc.gov)
  • In pb-1 sb alloy, substructure increases 700 psi creep resistance by a factor of 45 and tensile strength by approximately 9 percent, again without significant loss of ductility. (cdc.gov)
  • 6. The alloys of claims 1 or 2 forged at about 1000 -1050 C. with a two step heat treatment consisting of a solution anneal of 1100 -1200 C. followed by an aging treatment of 815 -950 C. to develop high creep-rupture strength and improved tensile ductility. (google.co.uk)
  • For instance, the nickel-chromium alloys (containing 15% chromium) are made use of due to the fact that it can provide oxidation including carburization resistance at temperature levels past 760 ¡ã C. (dailystrength.org)
  • Apart from being heat-resistant, titanium alloy nickel alloys likewise supply superb rust resistance. (dailystrength.org)
  • However, the addition of alloying elements has shown little influence on the electrical conductivity, although some of these can improve the mechanical strength, recrystallization temperature, and wear resistance. (thefreedictionary.com)
  • E. V. Collins, Physical Metallurgy of Titanium Alloys (Metallurgiya, Moscow, 1988) [in Russian]. (springer.com)
  • Early- stage research provided a fundamental breakthrough in metallurgy that was leveraged into the design of this new family of alloys. (ornl.gov)