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 ...
Shape Memory Alloys (SMAs) have the main interesting property to recover an inelastic strain induced by martensitic transformation. The initial shape can be recovered directly after unloading or with the application of an additional heating. Iron-based SMAs (Fe-SMAs) are characterized by a high coupling between phase transformation and plastic slip at low temperatures under small stress levels. Thermomechanical constitutive models describing such coupling developed based on small-strains are not suitable for higher loading levels. This motivates the proposed development of a finite-strain constitutive model for Fe-SMAs considering thermomechanical coupling between phase transformation and plastic slip, and by extending the small-strain model within a finite-strain thermodynamical framework in order to describe large strains mainly induced by plastic hardening in Fe-SMA material point. The model here has two internal variables (volume fraction of martensite and the accumulative plastic strain). It is
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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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 ...
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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United States Beryllium Aluminum Alloy Industry 2016 Market Research Report is a new market research publication announced by Reportstack. This report is a professional and in-depth study on the current state of the Beryllium Aluminum Alloy industry.. The report provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. The Beryllium Aluminum Alloy market analysis is provided for the United States markets including development trends, competitive landscape analysis, and key regions development status.. Development policies and plans are discussed as well as manufacturing processes and Bill of Materials cost structures are also analyzed. This report also states import/export consumption, supply and demand Figures, cost, price, revenue and gross margins.. To access full report with TOC, please visit United States Beryllium Aluminum Alloy Industry 2016 Market Research Report. The report focuses on United States major leading industry ...
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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.
TY BEI Sunglasses Mens Polarized Womens Day And Night Dual-use Aluminum Magnesium Alloy Fishing Sports Riding Driver Driving Glasses Anti-headlights High Beam ...
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TY - JOUR. T1 - Effect of static recrystallization on texture development and formability in Mg-Al-Zn and Mg-Li-Zn alloys. AU - Lee, Jong Youn. AU - Yun, Young Su. AU - Jung, Seok Hwan. AU - Kim, Won Tae. AU - Kim, Do Hyang. PY - 2014. Y1 - 2014. N2 - Effects of static recrystallization on texture evolution and formability in Mg-Al-Zn (AZ) and Mg-Li-Zn (LZ) alloys have been investigated. The effect of static recrystallization appears in an opposite way in AZ and LZ alloys, i.e., the basal texture becomes stronger in AZ alloys, while it becomes weaker in LZ alloys. Since LZ alloys have lower c/a ratio than AZ alloys, compression or double twin forms more abundantly in LZ alloys. The accelerated static recrystallization in the compression or double twinned region leads to a weaker basal texture evolution in LZ alloys. Double basal peak intensity maxima in as-rolled state changed into weaker single intensity maximum due to the effect of static recrystallization during post-annealing. As a result, ...
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.. ...
... and B10 alloys. Meinl cymbals are well known for employing both alloys. There is some evidence that a similar sheet alloy was ... Nickel silver as used in cymbal making is an alloy of copper and nickel, and an alloy with about 12% nickel is used for some ... Using this alloy allows for greater consistency between blanks compared to traditional cymbal alloy, and is more applicable to ... Malleable bronze is an alloy of tin and copper containing typically 8% tin. It is a single-phase alloy and can be cold rolled ...
... was founded in 1953 on the introduction of wrought RA330 alloy as a replacement for cast HT alloy. Prior to 1953 ... In 2012, Rolled Alloys expanded to Richburg, South Carolina with a new bar facility. Rolled Alloys also built a new facility ... Rolled Alloys is a private company headquartered in Temperance, Michigan, in the United States. Rolled Alloys is a supplier in ... Rolled Alloys Canada also deals in the Pulp / Paper and Mining markets. Rolled Alloys has expanded through acquisitions of ...
Various fusible alloys can be used as solders with very low melting points; examples include Field's metal, Lipowitz's alloy, ... "KappFree". Kapp Alloy & Wire, Inc. Retrieved 2 March 2015. Kapp Alloy. "Kapp Eco Babbitt". Retrieved 4 April 2013. Charles A. ... "KappTec". Kapp Alloy & Wire, Inc. Retrieved 23 October 2012. "Kapp Cad/Zinc". Kapp Alloy & Wire, Inc. Retrieved 23 October 2012 ... "KappTecZ". Kapp Alloy & Wire, Inc. Retrieved 25 October 2012. "KappRad". Kapp Alloy & Wire, Inc. Retrieved 25 October 2012. ...
Wallace Akers, who oversaw the project, chose the deliberately misleading code name "Tube Alloys". His Tube Alloys Directorate ... The Tube Alloys programme in Britain and Canada was the first nuclear weapons project. Due to the high costs, and the fact that ... Tube Alloys, therefore, fell behind in the race with the Manhattan Project. On 30 July 1942, Anderson advised Churchill: "We ... Tube Alloys was subsumed into the Manhattan Project. In a section of the Quebec Agreement formally entitled "Articles of ...
"Maithan Alloys - BSE India". BSE India. "Maithan Alloys recommends dividend". MoneyControl.com. "Maithan Alloys hits 20% upper ... "Maithan Alloys Limited". Business Line - The Hindu. "Company Overview of Maithan Alloys Limited". Bloomberg. "Maithan Alloys". ... "Maithan Alloys FY17 profit more than doubles to Rs 191 crore". Economic Times. Patherya, Mudar. "Maithan Alloys stands out in ... Maithan Alloys Limited is a publicly listed company at NSE which manufactures, sells manganese and ferro-alloys within India ...
... (AJ52 and AJ62) are die castable alloys of magnesium that have good creep resistance at high temperature. They ... Alloy Mg Al% Sr% Mn% AJ62 Balance 6 2 0.34 AJ52 Balance 5 2 0.4 AJ52 has higher creep resistance, and AJ62 has better ... ISBN 978-3-7949-0754-0. v t e (Webarchive template wayback links, CS1 maint: archived copy as title, Alloys, All stub articles ... Proceedings of the 7th International Conference on Magnesium Alloys and Their Applications. Wiley-VCH. p. 252. ISBN 978-3-527- ...
FACOR.::Ferro Alloys Corporation Ltd". "FERROALL History , Ferro Alloys Corporation Ltd Company History & Profile". ... The Ferro Alloys Corporation Limited (FACOR) was floated in 1955 by the house of Sarafs and Mors to become the first major ... The Ferro Alloys produced are High Carbon Ferro Chrome, Low Carbon Ferro Chrome, Silicochrome, Silicomanganese, and Magnesium ... FACOR.::Ferro Alloys Corporation Ltd". Facorgroup.in. 19 March 2009. Archived from the original on 12 November 2010. Retrieved ...
Little is known about its early life, but from around 1970, it worked at Wabash Alloys, a producer of aluminum alloys, at ... "Wabash Alloys". Arkansas Trains (TrainWeb). Retrieved 8 February 2010. "Wabash Alloys Locomotive, Pine Bluff, Jefferson County ... The Wabash Alloys Locomotive is a GE 25-ton diesel-electric locomotive built in 1940-43. ...
High-entropy alloys, alloys of multiple elements which ideally form no intermetallics Holmium-magnesium-zinc quasicrystal Frank ... 49 complex metallic alloy". Journal of Alloys and Compounds. Elsevier BV. 430 (1-2): 29-38. doi:10.1016/j.jallcom.2006.05.026. ... Complex metallic alloys is an umbrella term for intermetallic compounds with a relatively large unit cell. There is no precise ... Complex metallic alloys (CMAs) or complex intermetallics (CIMs) are intermetallic compounds characterized by the following ...
This alloy is less ductile than the other alloys and exhibits less plasticity. Applications include high-temperature, high- ... Alloy Phase Diagrams. V.3. USA: ASM International, 1990, p. 1453. (Metallurgy, Tungsten alloys, Tantalum, Refractory metals). ... The difference from this alloy to the others is that this alloy represents a high resilience modulus while maintaining its ... The alloy also has a high melting point and can reach high elastic modulus and high tensile strength. The equilibrium phase ...
Additionally, the alloy powder may also be 3D-printed into self-cannibalizing drone components that could recharge the drone's ... Aluminum based nanogalvanic alloys were initially discovered by researchers of the Metals Branch of ARL's Weapons and Materials ... Aluminum based nanogalvanic alloys are characterized by the size of their galvanic microstructure and consist of particles with ... Aluminum based nanogalvanic alloys refer to a class of nanostructured metal powders that spontaneously and rapidly produce ...
... are alloys that are designed to resist microstructural coarsening under various ... Another reviewer describes the coarsening of the W-Ti alloy to be a 2 nm size increase from the original 22 nm. The authors ... One method used to reduce coarsening, is by employing an alloy in which one component has good solubility with another. Since ... Experimental data reported that the alloy coarsened to 28 nm from its original grain size of 20 nm after 30 minutes of exposure ...
The alloy powder was later repurposed for energy applications. A patent was filed for the invention in June 2018 in order to ... Aluminium-based nanogalvanic alloys can be manufactured by means of high energy ball milling at room temperature or at lower ... These alloys produce hydrogen gas when the cathodic disperse phase forms galvanic couples with the anodic matrix and the ... Aluminium-based nanogalvanic alloys were discovered by researchers of the Metals Branch of ARL's Weapons and Materials Research ...
Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion. The ... The following table outlines the chemical composition of various grades of copper alloys. A brass is an alloy of copper with ... and special alloys. The following table lists the principal alloying element for four of the more common types used in modern ... Copper Alloy Data Cast copper alloy C83600 (Ounce Metal) substech.com Industrial Investment Castings - Franklin Bronze, ...
Phosphorus Alloy Silvaloy 2M Brazing Alloy Silvalite Brazing Alloy Silvabraze 33830 Brazing Alloy Silvaloy 0 Brazing Alloy " ... Alloy Silvaloy A25T Brazing Alloy Silvaloy 35 Brazing Alloy EASY FLO 3 Carbide Brazing Alloy F Bronze High Temperature Alloy ... Silvaloy 18M Brazing Alloy Matti-sil 18Si Cadmium Free Brazing Alloy SIL-FOS 18 Silver/ Copper/ Phosphorus Alloy Silvaloy 6 ... Silvacap 35490 Brazing Alloy FOS FLO 670 Copper Phosphorus Tin Braze Filler Metal "Copper Phosphorus Alloys , BCuP Alloy , ...
The Magna Alloys case changed the law and has settled the divisions of opinion on the issue of the restraint of trade. by ... Magna Alloys & Research (S.A.) (Pty) Ltd. v Ellis is an important case in South African law, particularly contract. It ... the leading case on restraint of trade is Magna Alloys and Research ( SA) (PTY) Ltd Vs Ellis 1984 (4) 874 ( A). The Law on ... Prior to the Magna Alloys case, South African courts have accepted that an agreement in restraint of trade is contrary to ...
Electroplated zinc alloys Complex metallic alloys Heusler alloy, a range of ferromagnetic alloys (66% copper, cobalt, iron, ... An alloy which is 14 parts gold to 10 parts alloy is 14 karat gold, 18 parts gold to 6 parts alloy is 18 karat, etc. This is ... Some of the main alloying elements are optionally listed after the alloy names. AA-8000: used for electrical building wire in ... This is a list of named alloys grouped alphabetically by base metal. Within these headings, the alloys are also grouped ...
What sets copper alloys apart from the other materials used in fish farming is that copper alloys are antimicrobial, that is, ... Copper-nickel alloys were developed specifically for seawater applications over five decades ago. Today, these alloys are being ... Environmental Performance of Copper Alloy Mesh in Marine Fish Farming: The Case for Using Solid Copper Alloy Mesh "Welcome to ... are currently being implemented on two other copper alloys: copper-nickel and copper-silicon. Each of these alloy types has an ...
Precipitation hardening alloys, such as certain alloys of aluminium, titanium, and copper, are heat-treatable alloys that ... to exotic titanium alloys used in the aerospace industry, to beryllium-copper alloys for non-sparking tools. An alloy is a ... most heat-treatable alloys are precipitation hardening alloys, that depend on the diffusion of alloying elements to achieve ... producing soft alloys like mild steel or hard alloys like spring steel. Alloy steels can be made by adding other elements, such ...
... was a United States corporation that ran a shipbreaking operation. In the 1960s and 1970s ...
"Source details: Journal of Alloys and Compounds". Scopus preview. Elsevier. Retrieved 2019-02-12. "Journal of Alloys and ... The Journal of Alloys and Compounds is a peer-reviewed scientific journal covering experimental and theoretical approaches to ... The papers presented at the symposium "The study of metals and alloys above 1200°C" were published as volume 1 of the journal. ... The journal developed out of an international symposium on metals and alloys above 1200°C which Hume-Rothery organized at ...
5052 aluminium alloy 5059 aluminium alloy 5083 aluminium alloy 5086 aluminium alloy 6061 aluminium alloy 6063 aluminium alloy ... Sahamit machinery 7022 RSP alloys datasheet 7055 Alloy -T7751 Plate and -T77511 EXTRUSIONS Aluminum alloy 7065 Aluminum alloy ... 6061 alloy is one of the most commonly used general-purpose aluminium alloys. 7000 series are alloyed with zinc, and can be ... Y alloy, Hiduminium, R.R. alloys: pre-war nickel-aluminium alloys, used in aerospace and engine pistons, for their ability to ...
... , born in Paris in 1875, died 1949, was a French medallic sculptor and engraver. He was a student of Barrias, ...
... is a spectral-line broadening mechanism caused by random distribution of the atoms in an alloy. The alloy ... In the mathematical description it is assumed that no clustering occurs within the alloy. Then, for a binary alloy of the form ... In general, the band gap energy E g {\displaystyle E_{g}} of a semiconducting alloy depends on the composition, i.e. E g {\ ... The alloy broadening is an inhomogeneous line broadening, meaning that its shape is Gaussian. ...
Fusible alloys are commonly, but not necessarily, eutectic alloys. Sometimes the term "fusible alloy" is used to describe ... Alloys Fusible Alloys. Archived from the original on 2012-10-12. Jenson, W.B. "Ask the Historian - Onion's fusible alloy" ... Mercury-containing alloys Only alkali metal-containing alloys Gallium-containing alloys (but neither alkali metal nor mercury) ... and sometimes thallium-containing alloys Other alloys (rarely used) Some reasonably well-known fusible alloys are Wood's metal ...
With the larger alloy wheels came alloy Tru-Spinners that were integral to the alloy wheel that would free-spin and continue to ... In the automotive industry, alloy wheels are wheels that are made from an alloy of aluminium or magnesium. Alloys are mixtures ... "alloy wheel" is usually reserved for wheels made from nonferrous alloys. The earliest light-alloy wheels were made of magnesium ... Magnesium alloy wheel on a Porsche Carrera GT Magnesium forged alloy wheel on a BMW motorsports car Forging can be done by a ...
... ) Last Command, CD (Alloy Orchestra) Underworld, CD (Alloy Orchestra) Man with a Movie Camera, vinyl - 2 record ... For example, Alloy acquired its own new print of Dziga Vertov's Man with a Movie Camera from Gosfilmofond. Alloy and wrote its ... Since that time Alloy devoted themselves to composing and performing new music for silent films. The Alloy Orchestra developed ... "Mass MoCA: Alloy Orchestra to play live score". The Berkshire Eagle. Retrieved 2022-05-05. "Alloy Orchestra". Santa Fe New ...
Kanthal FeCrAl alloys consist of mainly iron, chromium (20-30%) and aluminium (4-7.5 %). The first Kanthal FeCrAl alloy was ... Ordinary Kanthal FeCrAl alloy has a melting point of 1,425 °C (2,597 °F). Special grades can be used as high as 1,500 °C (2,730 ... Chromium alloys, Ferrous alloys, Refractory metals, Swedish inventions). ... The alloys are known for their ability to withstand high temperatures and having intermediate electric resistance. As such, it ...
Magnetic Alloys. Cobalt Institute. 2017. v t e (Magnetic alloys, All stub articles, Alloy stubs). ... Such an alloy must contain but is not limited to one or more of these metals. Magnetic alloys have become common, especially in ... A magnetic alloy is a combination of various metals from the periodic table such as ferrite that contains at least one of the ... Kondo, Jun (July 1964). "Resistance Minimum in Dilute Magnetic Alloys" (PDF). Progress of Theoretical Physics. 32 (1): 37-49. ...
"This alpha-beta alloy is the workhorse alloy of the titanium industry. The alloy is fully heat treatable in section sizes up to ... Titanium alloys are alloys that contain a mixture of titanium and other chemical elements. Such alloys have very high tensile ... Near-alpha alloys contain small amount of ductile beta-phase. Besides alpha-phase stabilisers, near-alpha alloys are alloyed ... Titanium alloys are generally classified into four main categories: Alpha alloys which contain neutral alloying elements (such ...
Precipitation hardening alloys, such as certain alloys of aluminium, titanium, and copper, are heat-treatable alloys that ... producing soft alloys like mild steel or hard alloys like spring steel. Alloy steels can be made by adding other elements, such ... most heat-treatable alloys are precipitation hardening alloys, that depend on the diffusion of alloying elements to achieve ... Steel is an alloy of iron and carbon, but the term alloy steel usually only refers to steels that contain other elements- like ...
This specification covers flash welded rings made of aluminum and aluminum alloys. ... Aluminum Alloy, Sheet and Plate 6.3Cu - 0.30Mn - 0.06Ti - 0.10V - 0.18Zr (2219 - O, F, T31, T351, T37, T81, T851, T87) ... Aluminum Alloy, Sheet and Plate 6.3Cu - 0.30Mn - 0.06Ti - 0.10V - 0.18Zr Solution Heat Treated, Cold Worked and Naturally Aged ... Rings, Flash Welded Aluminum and Aluminum Alloys AMS7488F This specification covers flash welded rings made of aluminum 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. ...
... was 40835730 Euros. Discover more data with NationMaster! ... France - Export of Alloy Steel Wire Euros - 1995 to 2019. Since 2014, France Export of Alloy Steel Wire was up 11.1% year on ... How does France rank in Export of Alloy Steel Wire?. #. 26 Countries. Euros. Last. YoY. 5‑years CAGR. ... In 2019, the country was number 7 comparing other countries in Export of Alloy Steel Wire with €40,835,729.59. France is ...
An alloy, by definition, is a combination formed purposely to be stronger and more resilient. Our team is looking for talented ... Alloy Ultimate is the top Mixed Club team based in Pittsburgh, PA. ... Welcome to the home of Alloy Ultimate!. ...
Buy Aluminum alloy 5056 (Al94.65/Mg5/Mn0.35) wire 0.05 mm thickness x 5m - 100m sizes from Goodfellow.com. Choose from 70,000+ ...
Yeah Racing Tamiya alloy differential cover. Yeah Racing have introduced an aluminium gear diff cover for the M-07, TA-06 and ... https://www.redrc.net/2019/03/yeah-racing-tamiya-alloy-differential-cover/ ...
... 2001-01-3104. The use of sheet magnesium for automobile body ... Citation: Krajewski, P., "Elevated Temperature Forming of Sheet Magnesium Alloys," SAE Technical Paper 2001-01-3104, 2001, ... The present work characterizes the elevated temperature mechanical behavior of commercially available magnesium sheet alloys at ...
We offer an extensive range of high-purity metals and alloys in diverse compositions and particles size, even customized for ... Our metal and alloy beads can be delivered into narrow sample chambers through pneumatic loading to prevent settling and ... Metals are pure single elements; alloys are mixtures of two or more elements, where at least one element is a metal. Metal ... We also offer custom production of alloys and other materials according to your degree of purity, water content, and ...
Lincoln Electric has products to meet the base material and process requirements of many stainless steel and high alloy welding ... Stainless Alloys Products to meet the process requirements of many stainless steel and high alloy welding applications. ... Special Alloys Special alloy products meet the stringent specs for the offshore, power gen, petrochemical and nuclear ... Stainless Alloys. Products to meet the process requirements of many stainless steel and high alloy welding applications. ...
This paper focuses on various classes of wrought and cast copper alloys produced with recycled scrap. Based on a survey of the ... literature, principal alloys, such as the brasses and bronzes, ar ... Based on a survey of the literature, principal alloys, such as ... This paper focuses on various classes of wrought and cast copper alloys produced with recycled scrap. ...
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... and Ti-6Al-4V alloys. The method was found to be repeatable and the effect of surface roughness negligible within th ... The addition of iron, copper, and nickel elements to Al makes the alloy stronger and more ductile. The research shows that the ... and Ti-6Al-4V alloys. The method was found to be repeatable and the effect of surface roughness negligible within the range of ... and ultimate tensile strength of small volume test specimens in aluminum and titanium alloys. The advantage of such a method is ...
Maithan Alloys (MAITHANALL) - Business Standard News and more from Business Standard News ... EGM:07.02.2017Maithan Alloys Ltd has informed BSE th.... 14-01-2017. EGM. Maithan Alloys Ltd has informed BSE that the Extra O ... Maithan Alloys Limited has informed the Exchange the.... 11-08-2022. EGM. 14-09-2022. COM 14/09/2022Notice for Meeting of Un- ... Maithan Alloys Ltd. (MAITHANALL) - Corporate Action. Search Purpose:. Book Closure. Board Meeting. AGM. EGM. Dividend. Bonus. ...
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Cu-Ni Alloys in Desalination Systems, B. Todd, Seminar Technical Report 7044-1919, CDA Inc., The Application of Cu-Ni Alloys in ... Copper-nickel alloys can be used in areas not exposed to polluted, stagnant water for prolonged times. They are particularly ... For very high pressures, the 70-30 alloy may be used.. Chiller Systems. Chiller systems are required to meet the demands for ... These are often constructed in 90-10 Cu-Ni, the system pipe work being the same alloy. Hot fresh water is passed through the ...
What really is the advantage of alloy heads in comparison to cast iron. All the old petrol and diesel motors seldom had head ... Alloys lighter, but it cracks , warps, corrodes easier than cast.... ... Alloy Heads. Submitted: Wednesday, Mar 29, 2006 at 19:22 ThreadID: 32318 Views:1452 Replies:4 FollowUps:3 This Thread has been ... Its bugged me a bit since owning a e2200 mazda with the R2 motor ,the alloy head came off that heap off crap three times in as ...
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NbSi alloys were prepared by direct electrochemically reducing four mixed Nb,sub,2,/sub,O,sub,5,/sub, and SiO,sub,2,/sub, ... Only the alloys of the Nb-10Si, Nb-20Si, and Nb-30Si had a phase of Nb (JCPDS: 35-0789) shown in Figures 4(a), 4(b), and 4(c). ... in the alloy system [1]. Moreover, NbSi alloys still have three other excellent properties: close coefficient of heat expansion ... The similar SEM image and EDX results were shown for the sample Nb-30Si alloy. Compare the three alloys (Nb-10Si, Nb-20Si, and ...
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  • 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)
  • Among them, direct electrochemical reduction of metal oxides or mixed oxides in molten electrolytes was an effective method for production of metals and alloys. (hindawi.com)
  • Properties of the aluminum alloy AA6061-T6 are used to establish a trial calculation model and to verify the algorithms with existing experimental results in literature. (techscience.com)
  • The detailed grain growth process of the 6061-T6 aluminum alloy under different temperature fields is then obtained, and grain morphologies at various positions are analyzed. (techscience.com)
  • With the global economic integration, the foreign trade of aluminum alloy sheet products is becoming more and more frequent, and shipping has become an indispensable transportation route for the aluminum sheet trading process. (dn.ua)
  • In order to facilitate the inventory of our aluminum alloy sheets, we need to mark the relevant information such as the number of aluminum plate models, which can avoid a lot of trouble, and also allow the goods to pass the customs inspection as soon as possible, shortening the entire transportation time. (dn.ua)
  • Fourth, pay attention to the holidays and ports of arrival of aluminum alloy plates in the country. (dn.ua)
  • The addition of iron, copper, and nickel elements to Al makes the alloy stronger and more ductile. (astm.org)
  • Copper-nickel alloys can be used in areas not exposed to polluted, stagnant water for prolonged times. (copper.org)
  • Nickel alloys are the mostly used superalloys in aviation industry. (hindawi.com)
  • Stainless steel, which has 18% chromium and 8% nickel alloyed to it, is valued for its anti-corrosive qualities. (jrank.org)
  • The nickel-titanium (Ni-Ti) alloys are used in the manufacture of orthodontic wires mainly due to its greater resilience and low modulus of elasticity when compared to other alloys, particularly stainless steel. (bvsalud.org)
  • 1, 3] Cardiac stents and patches are made of nitinol (an alloy of titanium and nickel). (medscape.com)
  • This volume of the IARC Monographs provides evaluations of the carcinogenicity of nine agents: cobalt metal (without tungsten carbide or other metal alloys), soluble cobalt(II) salts, cobalt(II) oxide, cobalt(II,III) oxide, cobalt(II) sulfide, other cobalt(II) compounds, trivalent antimony, pentavalent antimony, and weapons-grade tungsten (with nickel and cobalt) alloy. (who.int)
  • Weapons-grade tungsten (with nickel and cobalt) alloy is used in armour-penetrating munitions. (who.int)
  • Two of these agents - pentavalent antimony and weapons-grade tungsten (with nickel and cobalt) alloy - were evaluated by the Working Group for the first time. (who.int)
  • Other tungsten alloys include Stellite (cobalt, chromium, and tungsten), which is used in bearing and pistons due to its durability and resistance to wear, and Hevimet, which is made by sintering a tungsten alloy powder and is used in ammunition, dart barrels, and golf clubs. (thoughtco.com)
  • 4130 is a high strength, low alloy, GTAW (TIG) chromium-molybdenum steel used to weld alloys of similar composition. (harrisproductsgroup.com)
  • Ferro chrome or Ferro chromium (FeCr) is a type of ferroalloy, that is, an alloy between chromium and iron, generally containing 50% to 70% chromium by weight. (icbferroalloys.com)
  • In addition to titanium, also other refractory metals such as tantalum, niobium, tungsten and also cobalt-chromium alloys benefit from boronizing. (totalmateria.com)
  • Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity , ductility , opacity , and luster , but may have properties that differ from those of the pure metals, such as increased strength or hardness. (wikipedia.org)
  • 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)
  • 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)
  • NOCOLOK® Cs Flux works effectively for alloys containing roughly 0.3 to 0.5 wt% Mg. Depending on specific design and process conditions, Cs containing fluxes can also offer benefits for alloys containing 0.3 wt% or even less Mg. For concentrations higher than 0.5 wt% of Mg, the effectiveness of Cs compounds in non-corrosive fluxes gradually decreases. (aluminium-brazing.com)
  • Boronizing is applicable to titanium alloys and a pack process at 950°C creates a compact, uniform layer composed of TiB 2 and TiB compounds. (totalmateria.com)
  • The International Agency for Research on Cancer (IARC) is pleased to announce that Volume 131 of the IARC Monographs , Cobalt, antimony compounds, and weapons-grade tungsten alloy, is now available online. (who.int)
  • The first monograph evaluates biological and epidemiological data on metallic beryllium, beryllium-aluminium and -copper alloys, and some beryllium compounds. (who.int)
  • The monograph on cobalt and cobalt compounds considers available data on metallic cobalt, cobalt alloys, including cobalt-containing surgical implants and dental devices, and cobalt compounds. (who.int)
  • Alloys are used in a wide variety of applications, from the steel alloys, used in everything from buildings to automobiles to surgical tools, to exotic titanium alloys used in the aerospace industry, to beryllium-copper alloys for non-sparking tools. (wikipedia.org)
  • Also known as: Humphreys Gold Co., Titanium Alloys Mfg. Co., Div. Of National Lead, Titanium Alloy Metals, Titanium Pigment Co. (cdc.gov)
  • To date, there are no open/active SEC petitions from Titanium Alloys Manufacturing. (cdc.gov)
  • All employees who worked in any area or building at Titanium Alloys Manufacturing from January 1, 1955, through December 31, 1956. (cdc.gov)
  • The research shows that the Small Punch Test can be used to qualitatively compare such mechanical properties as surface hardness, ductility, toughness, yield strength, and ultimate tensile strength of small volume test specimens in aluminum and titanium alloys. (astm.org)
  • Reading Alloys is a global leader in the development, design, and production of gas atomized powders, titanium powders and high purity master alloys. (iqsdirectory.com)
  • Nov. 24, 2022 /PRNewswire/ -- Today, CC Metals & Alloys (CCMA), a mining and metals company led by Mordechai Korf and Uriel Laber that employs dozens of local Kentucky workers, announced donations to two local charitable organizations providing meals and food support to hundreds of Kentucky families in need at Thanksgiving. (myarklamiss.com)
  • The use of scoop intake systems on steam turbine powered ships normally require 70-30 or 66-30-2-2 Cu-Ni alloys with high resistance to impingement corrosion. (copper.org)
  • Nb-1Zr alloy has 50% higher yield strength than pure Niobium and has the same corrosion resistance as pure Niobium in many solutions. (tantalum-niobium.com)
  • The layered structure consisted of alternating columnar-grain and nano-grain layers, which compensated for the intrinsic brittleness of electrodeposited metals and improved the galvanic effect of the alloy , thus increasing the strength and plasticity and changing the corrosion from localized to uniform while augmenting the corrosion rate. (bvsalud.org)
  • The yield strength of the multilayered alloy exceeded 350 MPa, its elongation was more than 20%, and its corrosion rate obtained by immersion test in Hank's solution reached 0.367 mm·y-1. (bvsalud.org)
  • It increased the galvanic effect of the alloy , thus augmenting the corrosion rate and changing the corrosion mode of the alloy from localized to uniform corrosion . (bvsalud.org)
  • Jindal Ferro Alloys Ltd. (moneycontrol.com)
  • Since 2014, Finland Basic Iron, Steel and Ferro-Alloys Number of Enterprises was down by 5.4% year on year. (nationmaster.com)
  • With 22 Enterprises in 2019, the country was number 18 among other countries in Basic Iron, Steel and Ferro-Alloys Number of Enterprises. (nationmaster.com)
  • ICB LONDON - A Trusted Supplier of Ferro Alloys and Carbon. (icbferroalloys.com)
  • ICB LONDON is one of the leading supplier in UK, offering a comprehensive range of Ferro Alloys and Carbon. (icbferroalloys.com)
  • Copper Alloy is a beautiful raw copper metal color made with a crossweave pattern. (wilsonart.com)
  • All American coins are made from copper alloy, sometimes sandwiched between layers of silver. (jrank.org)
  • N0571T - Wrought Copper and Wrought Copper Alloy Solder-Joint Drainage Fittings--DWV has been added to your cart. (asme.org)
  • This standard for wrought copper and wrought copper alloy solder-joint drainage fittings, designed for use with copper drainage tube conforming to ASTM B-306, covers description, pitch (slope), abbreviations for end connections, sizes and method of designating openings for reducing fittings, marking, material and dimensions and tolerances. (asme.org)
  • Niobium-Zirconium alloys (Nb-1Zr) and PWC-11 alloys (Nb-1Zr-0.1C) have been used in the SP-100 design as basic materials for lithium coolant boundaries, reactor shells and parts inside fuel casings. (tantalum-niobium.com)
  • Zirconium alloys which contains Niobium are used in heavy-water cooling of reactor pressure piping and reactor casings. (tantalum-niobium.com)
  • One of the key materials for manufacturing high pressure sodium lamp is pure Niobium Cap and Niobium Zirconium alloy exhaust pipe. (tantalum-niobium.com)
  • Western Alloys provides Niobium-Zirconium Sheet , Niobium-Zirconium Wire , Niobium-Zirconium Rod , Niobium-Zirconium Tube , Niobium-Zirconium Target and Parts for our clients from all over the world. (tantalum-niobium.com)
  • The flux containing 2 wt% Cs is effective for brazing aluminium alloys with 0.35% to 0.5 % Mg. At lower levels of magnesium no difference between the standard flux and the 2 wt% Cs flux was observed. (aluminium-brazing.com)
  • Magnesium is very often added to aluminium alloys to increase strength and machinability. (aluminium-brazing.com)
  • At a concentration of 2 wt% Cs one can observe a positive effect on aluminium alloys containing magnesium. (aluminium-brazing.com)
  • Alloy 8620 is a low carbon case hardening alloy that features a hard case with a tough ductile core which experiences minimal distortion during heat treatment, this alloy steel provides a combination of toughness, hardness, strength and impact performance not found in lower grade carbon steels. (castlemetals.com)
  • Krajewski, P., "Elevated Temperature Forming of Sheet Magnesium Alloys," SAE Technical Paper 2001-01-3104, 2001, https://doi.org/10.4271/2001-01-3104 . (sae.org)
  • Since 2014, France Export of Alloy Steel Wire was up 11.1% year on year. (nationmaster.com)
  • In 2019, the country was number 7 comparing other countries in Export of Alloy Steel Wire with €40,835,729.59. (nationmaster.com)
  • How does France rank in Export of Alloy Steel Wire? (nationmaster.com)
  • Low-melting alloy wire. (belmontmetals.com)
  • The original and modified models are fitted to consistent experimental results from mechanical cyclic loading under isothermal conditions (0-800 MPa, 30-70 °C) of a trained pseudoelastic shape memory alloy wire. (dtu.dk)
  • Enemark, S & Santos, I 2016, ' Quasi-static characterisation of trained pseudoelastic shape memory alloy wire subjected to cyclic loading: transformation kinetics ', Journal of Intelligent Material Systems and Structures , vol. 27, no. 9, pp. 1150-1164. (dtu.dk)
  • Featuring our Houstex 2017 review, our alloy spotlight, increased stock, our new Wire Finder Web App and much more! (alloywire.pt)
  • Alloys are mixtures of a metal with other elements, the precise combination being governed by the required properties. (goodfellow.com)
  • Products to meet the process requirements of many stainless steel and high alloy welding applications. (lincolnelectric.com)
  • Key companies in the Global Market for High Performance Alloys include Allegheny Technologies Incorporated, AMG Advanced Metallurgical Group N.V., Aperam SA, Carpenter Technology Corporation, Constellium SE, Doncasters Group Limited, ERAMET S.A., Fort Wayne Metals Research Products, LLC and H.C. Starck GmbH. (researchandmarkets.com)
  • Reading Alloys' high-performance materials are key for future generation products where superior precision and quality are essential, its quality management system is certified to ISO 9001:2008 and AS9100C and its high-purity alloys are tested by a NADCAP accredited analytical laboratory. (iqsdirectory.com)
  • ALLOY Doorframe is one of our revolutionary products. (alloy-asia.com)
  • Motorsport and Spares is a local business with over 30 years experience in aftermarket car parts, specialising in alloy wheels, suspension, car detailing products and much much more. (motorsportandspares.com)
  • Tungsten metal and metal alloys occur in consumer products ` If you get tungsten dust on your clothes, shower and such as electronics, light bulb filaments, cemented tungsten change your clothes before leaving your job and returning carbide grinding wheels and carbide tipped tools. (cdc.gov)
  • I get my new cup alloys tomorrow but i need to know if i can transplan the tyre pressure sensors/valves from my current alloys to the new ones. (meganesport.net)
  • The mechanical properties of alloys will often be quite different from those of its individual constituents. (wikipedia.org)
  • Additively manufactured (AM) eutectic Al alloy systems have been studied extensively for advantageous thermal stability and mechanical properties due to their refined microstructures. (ornl.gov)
  • The aim of this study was to compare the mechanical properties of shape memory alloys wires in three-point bending in different manufacturers. (bvsalud.org)
  • The enhancement of mechanical properties and uniform degradation of electrodeposited Fe-Zn alloys by multilayered design for biodegradable stent applications. (bvsalud.org)
  • The alloys ' composition, microstructure, mechanical properties, in vitro degradation and biocompatibility were assessed. (bvsalud.org)
  • The above results verified that the multilayered Fe-Zn alloy prepared by electrodeposition presented enhanced mechanical properties, higher degradation rate, uniform degradation mechanism and good biocompatibility. (bvsalud.org)
  • The oxide near the weld of the cost-effective Alloy 718 alloy is more difficult to handle than the stainless steel, so at this time it is necessary to use a fine abrasive belt for grinding, before pickling in a mixed acid of nitric acid and hydrofluoric acid, Also use sandpaper to remove oxides or use a salt bath for reasonable pretreatment. (tatayoung.com)
  • Alloys are defined by a metallic bonding character. (wikipedia.org)
  • An alloy may be a solid solution of metal elements (a single phase, where all metallic grains (crystals) are of the same composition) or a mixture of metallic phases (two or more solutions, forming a microstructure of different crystals within the metal). (wikipedia.org)
  • Examples of alloys include red gold ( gold and copper ) white gold (gold and silver ), sterling silver (silver and copper), steel or silicon steel ( iron with non-metallic carbon or silicon respectively), solder , brass , pewter , duralumin , bronze , and amalgams . (wikipedia.org)
  • Adding a small amount of non-metallic carbon to iron trades its great ductility for the greater strength of an alloy called steel . (wikipedia.org)
  • Alloys are generally considered to be metallic in nature i.e. they have good thermal and electrical conductivities). (goodfellow.com)
  • We found that despite the refined microstructure of the AM alloys, the phases formed were consistent with the cast alloys, suggesting that AM processing did not significantly alter the formation and stability of phases from that in the conventional alloys. (ornl.gov)
  • An alloy is a mixture of chemical elements of which at least one is a metal . (wikipedia.org)
  • An alloy is a mixture of chemical elements , which forms an impure substance (admixture) that retains the characteristics of a metal . (wikipedia.org)
  • An alloy is distinct from an impure metal in that, with an alloy, the added elements are well controlled to produce desirable properties, while impure metals such as wrought iron are less controlled, but are often considered useful. (wikipedia.org)
  • Alloys are made by mixing two or more elements, at least one of which is a metal. (wikipedia.org)
  • This is usually called the primary metal or the base metal, and the name of this metal may also be the name of the alloy. (wikipedia.org)
  • A metal that is normally very soft ( malleable ), such as aluminium , can be altered by alloying it with another soft metal, such as copper . (wikipedia.org)
  • Our metal and alloy beads can be delivered into narrow sample chambers through pneumatic loading to prevent settling and clogging issues associated with fine powder. (sigmaaldrich.com)
  • Waukesha-based American Iron & Alloys, LLC (AIA), a supplier of cast iron, bronze bar, tubing, and other metal components, has been acquired by De Pere-based The Lawton Standard Co. Terms of the deal were not disclosed. (biztimes.com)
  • Alloys are distinguished from composite metals in that alloys are thoroughly mixed, creating, in effect, a synthetic metal . (jrank.org)
  • Alloys can be created by mixing the metals while in a molten state or by bonding metal powders. (jrank.org)
  • The number of possible alloy combinations is almost endless since any metal can be alloyed in pairs or in multiples. (jrank.org)
  • Doctor Black Jack's partner and constant companion, the painfully cute Pinoko, is now a metal alloy and PVC figure from Tokyo Toys! (hlj.com)
  • Solder is a fusible metal alloy used to create a permanent bond between metal work pieces. (mayeralloys.com)
  • Western Alloys is a leading pioneer in the industry of non-ferrous metal and refractory metal. (tantalum-niobium.com)
  • Common metal NCT include transition metals (Me) and alloys, which provide active sites for catalytic reactions. (cdc.gov)
  • NbSi alloys were prepared by direct electrochemically reducing four mixed Nb 2 O 5 and SiO 2 powders (Nb-10Si, Nb-20Si, Nb-30Si, and Nb-37.5Si) in molten CaCl 2 electrolyte at 900°C. The samples were characterized with scanning electron microscope (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDX). (hindawi.com)
  • Herein, we used this electrochemical reduction method for the production of NbSi alloys in the molten CaCl 2 at high temperature (900°C). The processors were mixed Nb 2 O 5 and SiO 2 powders of four various atomic ratios of Nb and Si. (hindawi.com)
  • Have a few a few single 10 inch alloy wheels - just what you need for a spare or damage replacement. (gumtree.com)
  • 4 x Mini Cooper Genuine 17'' alloy wheels Flame spoke PCD 4 x 100 4 stud 4 x tyres 205 45 ZR 17'' 88W XL tyres 2 x Aplus A607 1 x Barum Bravuris 3HM 1 x Kumho Ecesta LESport Extra Load Radial Tubeless M+S All Seasons tread 3 x 8mm NEW! (gumtree.com)
  • All Factory Alloy Wheels are packed in strong boxes with great care to protect the edges and face of the wheels. (finishlinewheels.com)
  • We then check and repair any damages to the alloy wheels, from kerbing to cracks we can have the wheels ready for the three stage coating in no time. (fifepowdercoating.com)
  • Pewter is an alloy of copper, tin, and antimony. (jrank.org)
  • Antimony ores are mined and then mixed with other metals to form antimony alloys or combined with oxygen to form antimony oxide. (cdc.gov)
  • The Becker-Doring nucleation theory is described and its range of validity is discussed for binary alloy simulations using the Kawasaki exchange model in various concentra tion regimes. (actapress.com)
  • Here, we experimentally show the first example of a layer-structured pseudo-binary alloy, theoretically called Z 3-FePd 3 . (nature.com)
  • To create an ordered alloy with such an atomic arrangement as the layered structures shown in Supplementary Fig. 1 , we paid attention to the inter-element miscibility-the miscibility between two elements at an atomic level-in a binary-alloy phase diagram 8 . (nature.com)
  • This structural transformation caused by the interelement affinity of an interstitial N with Fe and Ni inspired us to analogically consider that the transformation from well-known to unexplored structures of a binary alloy could be achieved by the difference in the miscibility of a substitutional third element with the two kinds of elements in binary alloys. (nature.com)
  • In 2019, Hines Global Income Trust, Inc. ("Hines Global") acquired Alloy by Alta, a 275-unit multifamily complex located adjacent to the University of Maryland in College Park. (hines.com)
  • Rebranded The Alloy, the seven-story building was delivered in the first quarter of 2019 and is among the highest-quality assets in College Park. (hines.com)
  • Cobalt(II) oxide and weapons-grade tungsten alloy were classified as possibly carcinogenic to humans (Group 2B) on the basis of sufficient evidence in experimental animals. (who.int)
  • Although both metals are very soft and ductile , the resulting aluminium alloy will have much greater strength . (wikipedia.org)
  • Due to its very-high strength, but still substantial toughness , and its ability to be greatly altered by heat treatment , steel is one of the most useful and common alloys in modern use. (wikipedia.org)
  • Steel alloys often contain tungsten for these beneficial properties. (thoughtco.com)
  • Tungsten-steel alloys are also used in the production of rocket engine nozzles, which must have high heat resistant properties. (thoughtco.com)
  • The various types of steel and iron are all alloys classifiable by their content of other materials. (jrank.org)
  • Vanadium is a rare element used in ferrous metallurgy as an alloy additive in various types of steel. (who.int)
  • We also offer custom production of alloys and other materials according to your degree of purity, water content, and monodispersity needs. (sigmaaldrich.com)
  • Brazeability of AA6063 alloy as a function of caesium content at flux load of 5 g/m 2 [12] . (aluminium-brazing.com)
  • After annealing at 450°C, all the alloys consisted of α(Fe) solid solution and Zn-rich B2 ordered coherent phase, except for the alloy with 11.6 wt% Zn content, in which a Fe3Zn10 phase appeared. (bvsalud.org)
  • Fe-Zn alloys with lower Zn content had good cytocompatibility with the human umbilical vein endothelial cells and good blood compatibility. (bvsalud.org)
  • Ready for wherever the journey takes you, Topstone Alloy distills the spirit of Topstone Carbon into a rugged, ever-ready aluminum frame. (cannondale.com)
  • Our most popular ski, the Alloy Senate utilizes a polyurethane core with Paulownia wood stringers wrapped in carbon fiber. (skiboss.shop)
  • The Calibre Vintage is a retro style mesh alloy wheel with a polished dish available in various sizes, colours and fitments. (motorsportandspares.com)
  • Although the elements of an alloy usually must be soluble in the liquid state, they may not always be soluble in the solid state. (wikipedia.org)
  • If the metals remain soluble when solid, the alloy forms a solid solution , becoming a homogeneous structure consisting of identical crystals, called a phase . (wikipedia.org)
  • In some cases, an alloy may reduce the overall cost of the material while preserving important properties. (wikipedia.org)
  • Various alloys have different desired properties such as strength, visual attractiveness, or malleability. (jrank.org)
  • Alloying with Zn to form Fe-Zn alloy is anticipated to meet the degradation rate requirements while retaining the iron 's inherent properties. (bvsalud.org)
  • If the cathode was mixed oxides, the reduction production might be oxygen-free alloys. (hindawi.com)
  • This paper focuses on various classes of wrought and cast copper alloys produced with recycled scrap. (cdc.gov)
  • A Small Punch Test method with 3 mm diameter and 0.5 mm thick specimens was utilized to characterize 3003-H14 aluminum, 2618-T61 aluminum, and Ti-6Al-4V alloys. (astm.org)
  • This alloy which is normally used for tubes up to 2-1/2" Diameter allows them to be bent or formed to the desired shape without any kinks. (belmontmetals.com)
  • Express Alloys Material Services Ltd has over 30 years of experience in the supply of centrifugal castings and specialist forgings . (expressalloys.com)
  • After scanning electron microscope (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDX) analysis, the NbSi alloys were composed of different phases and almost free of oxygen. (hindawi.com)
  • An infinite number of crystal structures in a multicomponent alloy with a specific atomic ratio can be devised, although only thermodynamically-stable phases can be formed. (nature.com)
  • Since its foundation in 1966, the Welding Alloys Group has become the global specialist in the development of low and high alloyed cored wires, automated welding equipment for surfacing and joining applications. (railway-technology.com)
  • For very high pressures, the 70-30 alloy may be used. (copper.org)
  • The Lawton Standard specializes in high alloy and complicated metallurgical castings. (biztimes.com)
  • Amid the COVID-19 crisis, the global market for High Performance Alloys estimated at US$7.4 Billion in the year 2020, is projected to reach a revised size of US$10.1 Billion by 2027, growing at a CAGR of 4.5% over the period 2020-2027. (researchandmarkets.com)
  • The High Performance Alloys market in the U.S. is estimated at US$1.9 Billion in the year 2020. (researchandmarkets.com)
  • What is the estimated value of the Global Market for High Performance Alloys? (researchandmarkets.com)
  • The Global Market for High Performance Alloys was estimated to be valued at $7.4 Billion in 2020. (researchandmarkets.com)
  • What is the growth rate of the Global Market for High Performance Alloys? (researchandmarkets.com)
  • The growth rate of the Global Market for High Performance Alloys is 4.5%, with an estimated value of $10.1 Billion by 2027. (researchandmarkets.com)
  • The Global Market for High Performance Alloys is estimated to be worth $10.1 Billion by 2027. (researchandmarkets.com)
  • Who are the key companies in the Global Market for High Performance Alloys? (researchandmarkets.com)
  • C ). The most useful are the alloys containing high percentages of Bismuth combined with Lead, Tin, Cadmium, Indium and other metals. (belmontmetals.com)
  • Brass is an alloy of copper and zinc. (jrank.org)
  • A kinetic law for constitutive modelling of shape memory alloys is proposed in order to increase model predictability in comparison with experimental data. (dtu.dk)
  • Researchers at the University of Kiel in Germany produced a new shape memory alloy, which springs back into shape even after bending it more than 10. (born2invest.com)
  • Alloys can be manufactured by various routes, the most widely used being to melt the constituents together and to cool the resultant mixture to form a single or multi-phase solid Rod - A straight length of circular section material. (goodfellow.com)
  • From radiation therapy shielding applications to creating chucks for holding parts during machining , from being used as filler material when bending pipe or tube to creating fusible elements in automatic fire sprinklers , Low-Melting alloys continue to have a quiet yet profound impact on our lives. (belmontmetals.com)
  • Indeed, in the process of using the popular Alloy 718, with the progress of industrial technology and the development of urban economy, this alloy material has been applied to more and more industries, playing an increasingly important role. (tatayoung.com)
  • Machining of reliable Alloy 718 must be carried out after solution treatment, and all aspects must be considered, especially the work hardening of the material, but it is very important that Alloy 718 is more suitable for low surface cutting. (tatayoung.com)
  • The process is performed in solid, liquid or gaseous medium and is applicable to any ferrous material as well as to alloys of Ni, Co or Ti. (totalmateria.com)
  • Join Mike Cook, VP of Fraud Commercialization at Socure and Andrew Martin, Director of Data at Alloy as they discuss characteristics of synthetic identities and best practices to mitigate synthetic fraud. (alloy.com)
  • The low melting temperature and unique growth/shrinkage characteristics of these alloys lead to a greater diversity in useful applications than almost any other alloy system. (belmontmetals.com)
  • ALLOY Doorframe systems are categorized by design and functional characteristics to suit every application, separated into 3 systems. (alloy-asia.com)
  • Fife Powder Coating's alloy wheel refurbishment & repair service is second to none. (fifepowdercoating.com)
  • We offer FULL alloy wheel refurbishment using our extensive range of knowledge, equipment and materials. (fifepowdercoating.com)
  • The present work characterizes the elevated temperature mechanical behavior of commercially available magnesium sheet alloys at temperatures between 300°C and 500°C. The materials are then evaluated using both warm forming and superplastic forming technologies. (sae.org)
  • Low-Melting or Fusible alloys (Also known as Eutectic and Non-Eutectic Alloys) are generally the alloys that melt below 450 Deg. (belmontmetals.com)
  • While magnesium additions are helpful in achieving stronger alloys, the consequence is a decrease in brazeability. (aluminium-brazing.com)
  • third, casting the mixed molten alloys to ingots. (hindawi.com)
  • Based on a survey of the literature, principal alloys, such as the brasses and bronzes, are examined with respect to impurity elements and their effects on metallurgical behavior. (cdc.gov)
  • A potential biodegradable Fe-Zn alloy , which is difficult to be obtained by the metallurgical method , was prepared by electrodeposition to solve the low degradation rate of iron -based biomaterials . (bvsalud.org)
  • Until now, the mainly used techniques for fabricating NbSi alloys are orientation solidification [ 3 ], smelting with argon arc [ 4 ], physical vapor deposition (PVD), as well as some other methods of powder metallurgy. (hindawi.com)
  • In the paper of T.Popela and D.Vojtĕch is analysed the boride layers on Ti-46Al, Ti-46Al-8Nb and Ti-46Al-8Ta alloys by powder-pack boronizing technique. (totalmateria.com)