Alloys: A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.Gold Alloys: Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.Chromium Alloys: 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.Metal Ceramic Alloys: 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.Titanium: 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)Dental Casting Technique: The process of producing a form or impression made of metal or plaster using a mold.Materials Testing: 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.Dental Casting Investment: 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)Palladium: 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: 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.Tin: A trace element that is required in bone formation. It has the atomic symbol Sn, atomic number 50, and atomic weight 118.71.Surface Properties: Characteristics or attributes of the outer boundaries of objects, including molecules.Differential Thermal Analysis: Technique by which phase transitions of chemical reactions can be followed by observation of the heat absorbed or liberated.Electron Probe Microanalysis: 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.Aluminum Oxide: 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.Dental Polishing: Creation of a smooth and glossy surface finish on a denture or amalgam.Methylmethacrylates: The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.Nickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.Hardness: The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.Dental Stress Analysis: 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.Dental Bonding: 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.Gallium: A rare, metallic element designated by the symbol, Ga, atomic number 31, and atomic weight 69.72.Niobium: Niobium. A metal element atomic number 41, atomic weight 92.906, symbol Nb. (From Dorland, 28th ed)Methacrylates: Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.Stainless Steel: 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)Dental Etching: 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.Electroplating: Coating with a metal or alloy by electrolysis.Thiouracil: 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.Tensile Strength: 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)Indium: 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)Shear Strength: 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: 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".Photoelectron Spectroscopy: 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.Resin Cements: 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)Metallurgy: 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)Carbon Compounds, Inorganic: Inorganic compounds that contain carbon as an integral part of the molecule but are not derived from hydrocarbons.Dental Prosthesis Retention: Holding a DENTAL PROSTHESIS in place by its design, or by the use of additional devices or adhesives.Dental Materials: Materials used in the production of dental bases, restorations, impressions, prostheses, etc.Dental Porcelain: 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)Orthodontic Wires: Wires of various dimensions and grades made of stainless steel or precious metal. They are used in orthodontic treatment.Silicon Compounds: Inorganic compounds that contain silicon as an integral part of the molecule.Microscopy, Electron, Scanning: 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.ThionesBoron Compounds: Inorganic or organic compounds that contain boron as an integral part of the molecule.Silanes: 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.Dental Cements: 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.Chromium: 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.Dental Clasps: 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.Acrylic ResinsCrowns: 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.Dental Prosthesis Design: 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.Dental Amalgam: An alloy used in restorative dentistry that contains mercury, silver, tin, copper, and possibly zinc.Hardness Tests: 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)Stress, Mechanical: 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.Aluminum: A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98.Copper: A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.Denture, Partial, Removable: A partial denture designed and constructed to be removed readily from the mouth.Spectrometry, X-Ray Emission: 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.Cobalt: 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.Prostheses and Implants: 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.Dielectric Spectroscopy: 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.Sulfur Compounds: Inorganic or organic compounds that contain sulfur as an integral part of the molecule.Zirconium: Zirconium. A rather rare metallic element, atomic number 40, atomic weight 91.22, symbol Zr. (From Dorland, 28th ed)Methylmethacrylate: The methyl ester of methacrylic acid. It polymerizes easily to form POLYMETHYL METHACRYLATE. It is used as a bone cement.Dental Veneers: 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.Air Abrasion, Dental: 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.Potentiometry: 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)Pliability: The quality or state of being able to be bent or creased repeatedly. (From Webster, 3d ed)Dental Abutments: 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.Immersion: The placing of a body or a part thereof into a liquid.Coated Materials, Biocompatible: 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: 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.Adhesiveness: A property of the surface of an object that makes it stick to another surface.Composite Resins: Synthetic resins, containing an inert filler, that are widely used in dentistry.Electrolysis: Destruction by passage of a galvanic electric current, as in disintegration of a chemical compound in solution.Ceramics: 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)Oxides: 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.Potassium Compounds: Inorganic compounds that contain potassium as an integral part of the molecule.Mechanical Phenomena: The properties and processes of materials that affect their behavior under force.Biocompatible Materials: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.Osseointegration: 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).Denture Repair: The process of reuniting or replacing broken or worn parts of a denture.Mechanics: 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)Dental Implants: Biocompatible materials placed into (endosseous) or onto (subperiosteal) the jawbone to support a crown, bridge, or artificial tooth, or to stabilize a diseased tooth.Metals: 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)Dental Disinfectants: Chemicals especially for use on instruments to destroy pathogenic organisms. (Boucher, Clinical Dental Terminology, 4th ed)Electrochemistry: The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes.Elasticity: Resistance and recovery from distortion of shape.Polarography: 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.Denture Design: 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.Calcium Sulfate: 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.Cariostatic Agents: Substances that inhibit or arrest DENTAL CARIES formation. (Boucher's Clinical Dental Terminology, 4th ed)Electrochemical Techniques: The utilization of an electrical current to measure, analyze, or alter chemicals or chemical reactions in solution, cells, or tissues.Color: The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.Electrogalvanism, Intraoral: 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.Friction: Surface resistance to the relative motion of one body against the rubbing, sliding, rolling, or flowing of another with which it is in contact.Plasma Gases: 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).Denture, Overlay: Removable prosthesis constructed over natural teeth or implanted studs.X-Ray Diffraction: 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)Tooth Preparation, Prosthodontic: 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)Hot Temperature: Presence of warmth or heat or a temperature notably higher than an accustomed norm.Dental Prosthesis, Implant-Supported: 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)Dental Restoration, Permanent: 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: 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)Analysis of Variance: A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.Photomicrography: Photography of objects viewed under a microscope using ordinary photographic methods.Absorbable Implants: 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.Silicon Dioxide: 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.Hip Prosthesis: Replacement for a hip joint.Polymethyl Methacrylate: 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.Yttrium: 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.Computer-Aided Design: The use of computers for designing and/or manufacturing of anything, including drugs, surgical procedures, orthotics, and prosthetics.Gold: 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.Inlays: 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.Molybdenum: 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)Prosthesis Coloring: Coloring, shading, or tinting of prosthetic components, devices, and materials.WeldingBeryllium: 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.Implants, Experimental: Artificial substitutes for body parts and materials inserted into organisms during experimental studies.Chromium Compounds: Inorganic compounds that contain chromium as an integral part of the molecule.Tungsten: 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: 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.Porosity: 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.Phosphonoacetic Acid: A simple organophosphorus compound that inhibits DNA polymerase, especially in viruses and is used as an antiviral agent.Mercury Compounds: Inorganic compounds that contain mercury as an integral part of the molecule.Spectrophotometry, Atomic: Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.Polymethacrylic Acids: 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.Equipment Reuse: 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)
Patent US6596102 - Shape memory alloy and method of treating the same - Google Patents
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.
A trial to compare vascular healing response between self-expanding nitinol stent and paclitaxel-eluting stent in the...
Computer simulation of microstructural evolution in Ni-rich TiNi shape memory alloys under applied stresses</em>...
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 ...
Innovative beam column connections using shape memory alloys | (2001) | Leon | Publications | Spie
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 ...
Magnesium alloy - definition of Magnesium alloy by The Free Dictionary
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...
Engineering Design Tools for Shape Memory Alloy Actuators: CASMART Collaborative Best Practices and Case Studies | Smart...
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 ...
Shape Memory Alloys Market Share, Size | Analysis Report, 2026
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
Abstract 4424: Factors Differ Between Early and Late Restenoses Following Nitinol Stent Implantation in the Superficial Femoral...
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 ...
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Shape Memory Alloy and Elastomer Composite MEMS Actuators
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
Effect of travel speed on quality and welding efficiency of friction stir welded AZ31B magnesium alloy<...
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 ...
Patente US5001446 - Shape memory alloy and electric path protective device utilizing the alloy - Google Patentes
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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Patente US5782896 - Use of a shape memory alloy to modify the disposition of a device within an ... - Google Patentes
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
Patent US8556969 - Biocompatible copper-based single-crystal shape memory alloys - Google Patents
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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Large magnetic entropy change and magnetoresistance in a Ni41Co9Mn40Sn10 magnetic shape memory alloy (Journal Article) | DOE...
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. ...
Polymers | Free Full-Text | Some New Concepts of Shape Memory Effect of Polymers
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)
The applications and research progresses of nickel-titanium shape memory alloy in reconstructive surgery - Semantic Scholar
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.
Sensors | Free Full-Text | An Accurately Controlled Antagonistic Shape Memory Alloy Actuator with Self-Sensing | HTML
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
Shape Memory Alloys/Nitinol
New Design of a Soft Robotics Wearable Elbow Exoskeleton Based on Shape Memory Alloy Wire Actuators
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
Reversibility and irreversibility of magnetocaloric effect in a metamagnetic shape memory alloy under cyclic action of a...
We have studied adiabatic temperature change Î"Tad in a Ni50Mn36Co1Sn13 metamagnetic shape memory alloy. An irreversible character of Î"Tad 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 Î"Tadmax=-0.8 K to a weaker conventional MCE (Î"Tadmax=0.3 K). The crossover of Î"Tad 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 ...
Control of slewing motions of flexible structures using shape memory alloy
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.. ...
"Mesoscale Modeling of Shape Memory Alloys by Kinetic Monte Carlo-Finit" by Adam David Herron
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
Macroeconomic and Microeconomic Shape Memory Alloy Market
Stent fracture in the lower extremities | Angiologist
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 ...
Composition dependent elastic modulus and phase stability of Ni2MnGa based ferromagnetic shape memory alloys
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 ...
ASTM B951 - 11 Standard Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and Wrought
B951 - 11 Standard Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and Wrought , magnesium, UNS designations, Unalloyed magnesium, Wrought magnesium alloys, Cast magnesium alloys, Codification, Magnesium alloy castings, Magnesium alloys, Unalloyed magnesium, Wrought magnesium alloys, Cast magnesium alloys, Codification, Magnesium alloy castings, Magnesium alloys,
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Transvenous Closure of Patent Foramen Ovale: Preliminary Results with a New Self-Expanding Nitinol Wire Mesh in a Swine Model
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.
A prospective, single-arm, nonrandomised study to evaluate the efficacy and tolerability of nitinol self-expanding biolimus A9...
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Transcatheter Aortic Valve Replacement With a New Self-Expanding Transcatheter Heart Valve and Motorized Delivery System | JACC...
We report the first-in-human experience with a new self-expanding THV and motorized delivery system. A TAVR with the CENTERA THV and motorized delivery system was performed successfully in 15 patients with good hemodynamic and clinical short- and midterm outcomes.. The CENTERA THV design shares some similarities with current balloon-expandable THVs (SAPIEN and SAPIEN XT, Edwards Lifesciences). All incorporate bovine pericardial tissue leaflets and an internal polyethylene terephthalate paravalvular seal and use relatively "short" stent frames. The salient difference is the self-expanding nitinol frame, with a flared inflow, narrower annular segment, and a larger-diameter outflow. This shape is designed to facilitate self-seating in the aortic annulus. In comparison with most other self-expanding nitinol valves the CENTERA THV does not extend into the ascending aorta for anchoring or self-alignment.. The CENTERA fixation and alignment is dependent on the self-seating stent frame but also on a ...
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Aluminium Pipe, Tubes, Round, Square, Sheet, Plate. Aluminium grade 6082 is a 6000 series aluminium (Magnesium + Silicon) is a heat-treatable alloy in the T6 condition (fully heat treated) suitable for medium strength appliions offering an …. 6000 Series Alloy. When magnesium is added to this alloy, it can be heat-treated to convert it into a 6000-series alloy, which is excellent for standard and custom aluminum extrusion. 5000-Series When magnesium alone is added to aluminum, the strength of the alloy is increased. Aluminium 5083 H111. Aluminium Alloy 5083 H111 Plus Alloy 5083 H111 is known for exceptional performance in extreme environments. It displays high resistance to industrial chemical environments and shows exceptional strength after being welded. It is typically used in ship. V.s. RAJA , PhD , Indian Institute of Technology Boay, …. Stress corrosion cracking of the magnesium alloy Elektron 21 (ASTM-EV31A) and AZ91E was studied using constant load test in 0.1 M NaCl solution ...
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History - OZ Racing. OZ produces alloy wheels for the top automotive markets, such as: racing (F1, Rally, DTM, Indy..), aftermarket, motorcycle and OEM with special equipment for the most exclusive automobiles. OZ meets the special requirements of prestigious automotive manufacturers such as Ferrari, Laorghini, Maserati, Aston Martin, Lotus and McLaren, to name but a few.. RECENT GROWING DEMAND FOR MAGNESIUM IN THE …. In todays marketplace, magnesium die-casting means the production of parts in compliance with the stringent requirements of high-purity alloy standards. This is the basis for the successful appliions of die-cast parts for use in corrosive environments without. Galvanic Corrosion of a Magnesium Alloy in Contact …. Magnesium alloys are attractive alternatives as lightweight materials in various fields of engineering. Magnesium is however relatively non-noble and may suffer considerable galvanic corrosion when being used in conjunction with other metals, for instance when ...
Research status and prospect for magnesium alloy surface treatment--《Electroplating & Finishing》2007年11期
Structure homogeneity and low-temperature micromecanical properties of ultrafine-grained magnesium alloy AZ31<...
TY - JOUR. T1 - Structure homogeneity and low-temperature micromecanical properties of ultrafine-grained magnesium alloy AZ31. AU - Estrin, Y. Z.. AU - Fomenko, L. S.. AU - Lubenets, S. V.. AU - Rusakova, A. V.. PY - 2011/6. Y1 - 2011/6. N2 - The degree of microstructure homogeneity for an ultrafine-grained (UFG) AZ31 magnesium alloy obtained by special thermomechanical treatment including four passes of equal-channel angular pressing (ECAP, Route Bc) was studied by the microindentation method. The defect structure of the UFG alloy was found to be reasonably homogeneous. The texture associated with ECAP results in lower values of mi-crohardness measured on the plane normal to the extrusion axis as compared to those on a plane containing the axis, and also in some dependence of microhardness on the location of the indent on the billet surface. The microhardness of the initial coarse grained alloy was close to that of the UFG samples measured on the plane normal to the extrusion axis. The tensile ...
THIN FILM TRANSISTOR ARRAY SUBSTRATE AND METHOD OF MANUFACTURING THE SAME - Patent application
0060] If Al or an alloy of Al and any one of Nd, Sc, C, Ni, B, Zr, Lu, Cu and Ag is used for the data wiring (62, 65, 66 and 67), the data wiring (62, 65, 66 and 67) may be formed as multiple layers including different types of layers formed on and/or under Al or the Al alloy. In an exemplary embodiment, the data wiring (62, 65, 66 and 67) is a double layer including any one of Mo(Mo alloy)/Al(Al alloy), Ti(Ti alloy)/Al(Al alloy), Ta(Ta alloy)/Al(Al alloy), Ni(Ni alloy)/Al(Al alloy) and Co(Co alloy)/Al(Al alloy) or a triple layer including any one of Ti(Ti alloy)/Al(Al alloy)/Ti(Ti alloy), Ta(Ta alloy)/Al(Al alloy)/Ta(Ta alloy), Ti(Ti alloy)/Al(Al alloy)/TiN, Ta(Ta alloy)/Al(Al alloy)/TaN, Ni(Ni alloy)/Al(Al alloy)/Ni(Ni alloy), Co(Co alloy)/Al(Al alloy)/Co(Co alloy) and Mo(Mo alloy)/Al(Al alloy)/Mo(Mo alloy). The alloy materials may include at least one element selected from the group consisting of Mo, W, Nb, Zr, V, O, and N ...
Research and development of heat resistant magnesium alloy--《Light Alloy Fabrication Technology》2009年05期
The creep mechanism of magnesium alloy at high temperature and the design methods of heat-resistant magnesium alloy system are introduced.The present research statue of heat-resistant magnesium alloy improved by the addition of rare earth(RE),alkaline(Ca,Sr)and other elements(Si、Bi、Sn) is reviewed.It is pointed out that the future direction of research and development of heat resistant magnesium alloy is to develop magnesium alloy with low cost,good castability and good comprehensive mechanical properties.
Corrosion product formation during NaCl induced atmospheric corrosion of magnesium alloy AZ91D
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 ...
Global Copper and Copper Alloy Foil (=0.07mm) Market Set to Witness an Uptick of USD 1,409.0 million by 2022 | Perfect Analyst
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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Wrought Coppers and high copper alloys [SubsTech]
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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Corrosion behavior of flame-resistant Calcium-added Magnesium alloy in NaCl aqueous solution containing various anion species<...
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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New Report sheds light on the United States Beryllium Aluminum Alloy Industry 2016: Reportstack
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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Patent WO2004033016A1 - Radiopaque nitinol alloys for medical devices - Google Patents
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.
Microstructure Influence on the Corrosion of Permanent Mould Cast Magnesium Alloy AJ62 in Engine Coolant
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 (SCC) of magnesium alloys - [email protected]
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 ...
Stryker's Wingspan stent system succeeds in WEAVE trial - NS Medical Devices
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) ...
Automotive Inner Fenders Market By Product Type(Hard Plastic Resins, Aluminium Alloy, Plastic Steel, Others), By End User...
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 ...
2 Postdoc positions in LEM3 laboratory (UMR 7239) of Arts et Métiers ParisTech, Metz | iMechanica
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 ...
Titanium and titanium alloy applications in Sea Water Desalination - ABLTi Corporation
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 ...
Nickel alloys, Nickel 200, Nickel 201. Buy Nickel alloys in a moment. The best Nickel 200, Nickel 201 alloys price from the...
Tribological Characteristics of Deformed Magnesium Alloy AZ61 Under Dry Conditions | Journal of Tribology | ASME DC
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 ...
Deqing Huacheng Metal Drawbench Co. Ltd. - copper clad aluminum magnesium alloy wires
Wrought aluminum alloy and heat-exchanger component made of this alloy - Sucke, Norbert William
ISO - ISO 809:1973 - Magnesium and magnesium alloys - Determination of manganese - Periodate photometric method (Manganese...
Advanced Battery Technologies Obtains New Order to Supply Electric Scooter With Aluminum Magnesium Alloy Frame - Business -...
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 Men's Polarized Women's Day And Night Dual-use Aluminum Magnesium Alloy Fishing Sports Riding Driver Driving...
Reviews of W1 Aluminum Alloy Torture Rack Rotary Liner Shader Tattoo Machine Black - Tmart
YDC-1A11 Aluminum Alloy Folding Stretcher
Fatigue modification of TA15 titanium alloy weldments by an ultrasonic impact treatment - DTU Research Database
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 ...
Comparison of a chromic acid and a BTSE final rinse applied to phosphated 2024-T3 aluminum alloy | UBC Chemistry
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 ...
Shape-Memory Alloys Help NASA Create New Wing Design | 2018-03-05 | Assembly Magazine
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 . . .
Copper Alloys - ManufacturingET.org
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.. ...
Copper Alloy Wire
Patent US4294615 - Titanium alloys of the TiAl type - Google Patents
Cast and forged titanium alloys suited for use at temperatures over 600 C. are based on TiAl gamma phase structure. Useful alloys have about 1.5% or greater tensile ductility at temperatures of 260 C. and below, thereby making them fabricable and suited for engineering applications. Disclosed are alloys having weight percent compositions of 31-36 aluminum, 0-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0-3V, bal Ti). The inclusion of about 0.1 weight percent carbon improves creep rupture strength. To obtain high tensile strength, the alloys are forged at about 1025 C. and aged at about 900 C.; to obtain higher creep rupture strength and tensile ductility, a solution anneal at about 1150 C. is interposed before aging.
Titanium Alloy Illustrations ~ Titanium Alloy Vectors | Pond5
Copper Alloy Casting in Agra - Manufacturers and Suppliers India
Suppression of crystallization in Ti-based alloys by fluxing<...
TY - JOUR. T1 - Suppression of crystallization in Ti-based alloys by fluxing. AU - Seki, Ichiro. AU - Louzguine-Luzgin, Dmitri V.. AU - Takahashi, Toshitugu. AU - Kimura, Hisamichi. AU - Inoue, Akihisa. PY - 2011/3/1. Y1 - 2011/3/1. N2 - Controlling crystal nucleation and growth leading to formation of nano structures by an original flux treatment method mainly in calcia and magnesia crucibles followed by water-cooling allowed production of Ti45Cu 45Fe10 bulky nanostructured alloy of 16 mm in diameter. Since a glass forming ability (GFA) of the alloy composition is low, the alloy could not form an amorphous structure even by a common rapid quenching manner such as a melt-spun method. At the same time control over crystal nucleation and growth by fluxing was achieved on melting with flux-. a reagent which has a low melting temperature and good wettability. The crystal growth control in our investigations is also possible for different other alloys such as Ti 45CU45Ni10 alloy.. AB - Controlling ...
Download Software Development In Chemistry 5 Proceedings Of The 5Th Workshop Computers In Chemistry Oldenburg November 2123 1990
such Properties of Metals Collection. is of 9 authors( each of which includes long Finally) on CD-ROM: ed Steels and Their Properties, Stainless Steels and Their Properties, Structural Steels and Their Properties, Aluminum Alloys and Their Properties, Copper Alloys and Their Properties, Magnesium Alloys and Their Properties, Titanium Alloys and Their Properties, Woldmans Engineering Alloys, and The Worldwide Guide to Equivalent Irons and Steels. restates the Rover™ audience cast.
A study on biocompatibility of gadolinium based anodizing coating AZ91D magnesium alloy in Simulated Body Fluid (SBF) solution
Pure Mg and AZ91D alloy was anodized with and without the gadolinium nitrate Gd(NO3)3 in different concentrations (0.001g/l, 0.025g/l, 0.05g/l, 0.075g/l and 0.09g/l) at a constant current density and treatment time of 10mA/cm2 and 5 minutes. The results showed that the optimum gadolinium concentration is 0.075g/l due to obtaining the anodic film with high corrosion resistance. The surface morphology and microstructure of anodic coating were investigated by scanning electron microscopy (SEM), optical microscope (OM), and potentiodynamic polarization, respectively ...
Multi-objective design optimisation of coronary stents - Computational Modelling Group
Coronary stents are tubular type scaffolds that are deployed, using an inflatable balloon on a catheter, most commonly to recover the lumen size of narrowed (diseased) arterial segments. Their presence, however, can lead to adverse biological responses - in-stent restenosis, formation of neointima within 12 months of the implant, and thrombosis, formation of a blood clot inside the artery. Currently, an "ideal stent" - that recovers arterial shape with no adverse response - does not exist, even though, as a multi-billion dollar industry, stent design has witnessed a fairly rapid evolution from bare metal stents of increasing complexity, through shape memory alloy stents, polymer coated, drug eluting stents to biodegradable stents made from polymers or corrodible metals. The adverse responses are likely to be multi-factorial but their causes are not completely understood. However, there are studies implying a correlation between the stent design, which is a common differentiating factor between ...
Improved corrosion protection of aluminium alloy AA2024 by sol-gel... - CSIR - NAL
Aluminium alloy components increase wagon capacity | News | Railway Gazette International
Electrochemical and Microstructural Study of Ni-Cr-Mo Alloys Used in Dental Prostheses
Ni-Cr-Mo alloys have been widely used as fixed dental prostheses. Recast process influence on corrosion behavior of Ni-Cr-Mo dental alloy in simulated physiological serum has been investigated using chemical and electrochemical techniques. Ni-Cr-Mo alloy recast by induction (induction) or by blowtorch (torch) has exhibited similar dendritic structures with wide and precipitate grains in their boundaries. The torch alloy has presented good corrosion resistance in physiological serum. Passivation process provides this corrosion resistance. Passivation of Ni-Cr-Mo alloy is often attributed to the formation of a thin and compact layer of chromium oxide (Cr<sub>2</sub>O<sub>3</sub>). This film is self-limiting because it acts as a barrier to the oxygen transport and metal ions. This film stability will depend on its solubility to the working temperature. Different recast procedures change electrochemical parameters as stabilizing potential in open circuit, current density and
Vascutek Anaconda™ Abdominal Aortic Aneurysm (AAA) Post-Market Surveillance Registry - Full Text View - ClinicalTrials.gov
Vascutek Limited, a world leader in the development of vascular grafts, has combined their latest technological developments in polyester textile technology with unique endovascular design features to produce Anaconda™, the worlds next generation of AAA stent graft systems. Intuitive and of a modular design, Anaconda™ is the only repositionable device which also features exceptional flexibility. The modular design comprises bifurcate bodies, iliac legs and aortic cuffs. Nitinol, an alloy of nickel and titanium, has self-expanding properties and forms the top ring-stent of the bifurcate body section. The ring stent is composed of multiple turns of Nitinol wire that provides significantly increased hoop-strength enabling a conformable and secure haemostatic seal against the vessel wall to be achieved. Nitinol hooks located adjacent to the ring stent anchor the graft in position thus preventing graft migration. The iliac limbs are fully supported with Nitinol and the bifurcate bodies ...
Vascutek Anaconda™ Abdominal Aortic Aneurysm (AAA) Post-Market Surveillance Registry - Full Text View - ClinicalTrials.gov
Vascutek Limited, a world leader in the development of vascular grafts, has combined their latest technological developments in polyester textile technology with unique endovascular design features to produce Anaconda™, the worlds next generation of AAA stent graft systems. Intuitive and of a modular design, Anaconda™ is the only repositionable device which also features exceptional flexibility. The modular design comprises bifurcate bodies, iliac legs and aortic cuffs. Nitinol, an alloy of nickel and titanium, has self-expanding properties and forms the top ring-stent of the bifurcate body section. The ring stent is composed of multiple turns of Nitinol wire that provides significantly increased hoop-strength enabling a conformable and secure haemostatic seal against the vessel wall to be achieved. Nitinol hooks located adjacent to the ring stent anchor the graft in position thus preventing graft migration. The iliac limbs are fully supported with Nitinol and the bifurcate bodies ...
Sliding Material and Sliding Member Using the Sliding Material - Patent application
0010]Moreover, in Patent Literature No. 5, there is disclosed a sliding member that is made from a powdery aluminum alloy, sliding member which is made from a powdery aluminum alloy in which iron-based hard particles and hard particles, that is, one member or more of ceramic particles whose hardness is lower than that of alumina, are dispersed, and powdery aluminum alloy which includes silicon, manganese and magnesium; sliding member in which a large number of concaved portions are formed in a sliding surface of the sliding member by means of shot blasting using fine particles with one of nickel and tin being coated; and additionally sliding member on which one of nickel coating and tin coating is formed. The following are also disclosed: the large number of concaved portions fulfill a role of oil reservoirs, thereby it is possible to secure an oil-retaining function for the sliding surface; and moreover nickel or tin coating is made on a surface of aluminum alloy that is likely to undergo ...
Deep Drawing of Magnesium Alloys: Part Two :: Total Materia Article
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In practice, the uranium was canned in aluminum; this too was studied, as were alloys with tin, which was used to solder the ... Efforts continued into 1944, and it was found that with a zinc chloride booster they could produce a zinc-thorium alloy. ... ISBN 0-671-44133-7. Wilhelm, Harley A.; Carlson, O. Norman (1950). The Uranium-Manganese and Uranium-Copper Alloy Systems. Oak ... In particular, with water being used for cooling, there was speculation about alloys with high thermal conductivity and ...
Morgan Advanced Ceramics
Alloys that are amenable to precipitation hardening, such as most aluminium alloys and titanium, can be hot forged, followed by ... High-strength aluminium alloys have the tensile strength of medium strong steel alloys while providing significant weight ... Commonly used alloys are AlSi1MgMn (EN AW-6082) and AlZnMgCu1,5 (EN AW-7075). About 80% of all aluminium forged parts are made ... The high-strength alloy AlZnMgCu1,5 is mainly used for aerospace applications. The most common type of forging equipment is the ...
Group 10 element
Roman villa of Freira
The alloys normally contain 3% or 6% of rhenium. Second-generation alloys contain 3%; these alloys were used in the engines for ... Rhenium-molybdenum alloys are superconductive at 10 K; tungsten-rhenium alloys are also superconductive around 4-8 K, depending ... These alloys contain up to 6% rhenium, making jet engine construction the largest single use for the element. The second-most ... Tungsten-rhenium alloys are more ductile at low temperature, allowing them to be more easily machined. The high-temperature ...
At the APB the manganese atoms will be closer than in the bulk of the alloy and, for non-stoichiometric alloys with an excess ... In non-stoichiometric alloys, the temperatures of ordering decrease, and the range of anealing temperatures, where the alloy ... This significantly modifies the magnetic properties of the non-stoichiometric alloy relative to the stoichiometric alloy which ... The molten alloy has a solidus temperature of about 910 °C. As it is cooled below this temperature, it transforms into ...
Aluminium alloyed with copper (Al-Cu alloys), which can be precipitation hardened, are designated by the International Alloy ... designated as the 2000 series by the International Alloy Designation System (IADS), as with 2014 and 2024 alloys used in ... Also saw some use in motor-racing applications from the 1960s, as it is a tolerant alloy that could be press-formed with ... The name is obsolete today, and mainly used in popular science to describe the Al-Cu alloy system, or '2000' series, as ...
It is the main source for molybdenum alloying of HSLA steel. The alloy is produced by heating a mixture of molybdenum(VI) oxide ... For alloying with steel the ferromolybdenum is added to molten steel before casting. Among the biggest suppliers of ... "Ferro Alloys" (PDF). William Rowland Ltd. Retrieved 2008-11-03. Jorgenson, John D.; Corathers, Lisa A.; Gambogi, Joseph; Kuck, ... Ferro molybdenum is an important iron-molybdenum alloy, with a molybdenum content of 60-75% ...
Crystal structure of boron-rich metal borides (data page)
It is an alloy predominantly of aluminium, with between 1%-12% of magnesium as the primary alloying ingredient. It also ... 5083 aluminium alloy "Corrosion tests on Igedur and Hydronalium Hy 18 aluminium alloy sheets". National Archives, Kew. 1939- ... There are a large number of alloys within this family, one standard reference listing over twenty. The alloy family is noted ... Some variants of the alloy are ductile enough to be drawn into wire. This, combined with their resistance to corrosion by salty ...
Considered to not be a heat-treatable alloy, but the addition of Mg & Cu can allow it to be heat treated, e.g. AΠ4 alloys. ... Aluminium-silicon alloys contain 3 to 25% silicon content. Casting is the primary use of aluminum-silicon alloys, but they can ... aluminum-silicon alloys also containing magnesium and/or copper, and 4xx.x - Binary aluminum-silicon alloys. Copper increases ... Hypereutectic alloys, with a silicon content of 16 to 19%, such as Alusil, can be used in high-wear applications such as ...
Concept Alloys, Inc. Intellectual Property retrieved 12 April 2016 John P. Frick, ed. (2000). Woldman's Engineering Alloys. ASM ... Chromel is a registered trademark of Concept Alloys, Inc. Chromel A is an alloy containing approximately 80% of nickel and 20% ... Chromel is an alloy made of approximately 90 percent nickel and 10 percent chromium that is used to make the positive ... Chromel C is an alloy containing 60% nickel, 16% chromium, and 24% iron. It is also commonly called Nichrome 60 and is used for ...
Crystal structure of boron-rich metal borides
Tanaka T, Okada S, Ishizawa Y (1994). "A new yttrium higher boride: YB50". J. Alloys Compd. 205: 281. doi:10.1016/0925-8388(94) ... ISBN 0-12-053204-2. Seybolt A U (1960). "An Exploration of High Boron Alloys". Trans. Am. Soc. Metals. 52: 971-989. Richards SM ... doi:10.1016/0022-4596(77)90164-5. Tanaka T, Okada S, Gurin VN (1998). "A new scandium boride: ScB19". J. Alloys Compnd. 267: ... Alloys Compd. 329: 168. doi:10.1016/S0925-8388(01)01581-X. Zhang FZ, Xu FF, Leithe-Jasper A, Mori T, Tanaka T, Xu J, Sato A, ...
Post-war the alloys remained in use throughout British engineering in the 1950s and 1960s. They were used extensively for ... Kynal was a brand name for a series of aluminium alloys produced by ICI. The name was derived from Kynoch, an existing ICI ... "The British Light-alloy Industry". Flight. 10 June 1955. pp. 808-811. Carter, R.S. (1963). "North British Locomotive Co. diesel ... Kycube, a similarly-named series of copper beryllium alloys produced by IMI "ICI Metals Division". Grace's Guide. Metallic ...
... and various alloying elements establishes the specific properties of ferrous metals. Non-ferrous metals and alloys do not ... and alloys of iron with other metals (such as stainless steel). Manipulation of atom-to-atom relationships between iron, carbon ... "Ferrous Alloys Properties". All Metals & Forge Group. Retrieved 1 October 2013. Non ferrous, Merriam-Webster, retrieved 19 ...
... is an alloy composed of nickel (75%), iron (20%), and molybdenum (5%). It is a magnetically soft material. The ... "Supermalloy , Nickel & Nickel Alloys , Non-ferrous Metals , Metals , Material Categories , Chemical, mechanical, physical and ... resistivity of the alloy is 0.6 Ω·mm2/m (or 6.0 x 10−7Ω·m). It has an extremely high magnetic permeability (approximately ...
... produces steel bars (carbon and alloy steel), beams, sheet / flat rolled steel, plate, steel joists, joist girders, steel ... produces carbon and alloy steel standard and special screws, bolts and nuts. Harris Rebar is a leading fabricator, installer ... supplies ferro-alloys; and processes ferrous and nonferrous scrap. Nucor operates many subsidiaries that operate independently ...
Shape-memory alloys (SMAs), liquid crystalline elastomers, and metallic alloys that can be deformed and then returned to their ... Artificial muscles based on fishing line already cost orders of magnitude less (per pound) than shape-memory alloy or carbon ... "Feedback Control Using Shape Memory Alloy Actuators" (PDF). Retrieved 3 January 2014. Frank Daerden; Dirk Lefeber (2002). " ...
The alloy of 75% gold, 15% silver, 6% copper, and 4% cadmium yields a dark-green alloy. Grey gold alloys are usually made from ... The alloy of 76% gold, 19% copper, and 5% aluminium yields a yellow color; the alloy of 76% gold, 18% copper and 6% aluminium ... As a result, white gold alloys can be used for many different purposes; while a nickel alloy is hard and strong and therefore ... Cadmium can also be added to gold alloys but there are health concerns regarding its use. The alloy of 75% gold, 23% copper, ...
These alloys are used in furnace windings, bushings for glass fiber production, thermocouple elements, electrodes for aircraft ... Naturally occurring rhodium is usually found as the free metal, alloyed with similar metals, and rarely as a chemical compound ... Rhodium is used as an alloying agent for hardening and improving the corrosion resistance of platinum and palladium. ... ISBN 978-0-8031-1466-1. Kushner, Joseph B. (1940). "Modern rhodium plating". Metals and Alloys. 11: 137-140. Amatayakul, W.; ...
Brass is an alloy of copper and zinc. Bronze usually refers to copper-tin alloys, but can refer to any alloy of copper such as ... Some lead-free solders consist of tin alloyed with a small proportion of copper and other metals. The alloy of copper and ... Similarly, as discussed in copper alloys in aquaculture, copper alloys have become important netting materials in the ... Brass, an alloy of copper and zinc, is of much more recent origin. It was known to the Greeks, but became a significant ...
Certain long-life aircraft engine parts are made of an iridium alloy, and an iridium-titanium alloy is used for deep-water ... Iridium and especially iridium-platinum alloys or osmium-iridium alloys have a low wear and are used, for example, for multi- ... Iridium is found in nature as an uncombined element or in natural alloys; especially the iridium-osmium alloys, osmiridium ( ... Iridium-osmium alloys were used in fountain pen nib tips. The first major use of iridium was in 1834 in nibs mounted on gold. ...
Alloys of the metal with aluminium, cadmium, copper and manganese are used to make high-performance aircraft parts (see also ... Prasad, N. Eswara; Gokhale, Amol; Wanhill, R. J. H. (2013-09-20). Aluminum-Lithium Alloys: Processing, Properties, and ... Handbook Committee (1993). Aluminum and aluminum alloys. ASM International. pp. 121-. ISBN 978-0-87170-496-2. Archived from the ... Lithium-aluminium alloys). Lithium has been found effective in assisting the perfection of silicon nano-welds in electronic ...
"Alloy No. 2." It was produced in Germany where it was renamed "constantan". Of all modern strain gauge alloys, constantan is ... P alloy is available with S-T-C numbers of 08 and 40 for use on metals and plastics, respectively. Constantan is also used to ... A-alloy is supplied in self-temperature-compensation (S-T-C) numbers 00, 03, 05, 06, 09, 13, 15, 18, 30, 40 and 50, for use on ... This alloy has, for example, an adequately high strain sensitivity, or gauge factor, which is relatively insensitive to strain ...
Laser-arc treatment of aluminium alloys
Surface alloying of aluminium alloys with Si, Fe and Ni * Arc stabilisation by laser irradiation * Optimisation of the laser- ... The increasing use of aluminium alloys in high demand applications has lead to the development of a number of surface treatment ... Topics covered include: * The physics of the laser-arc-material surface interaction * Surface remelting of aluminium alloys * ... thesis investigates the combination of a high power laser beam and an electric arc to produce new surfaces on aluminium alloys ...
Global and China Aluminium Alloy Industry Growth 2014
Table of Contents Chapter One Aluminium Alloy Industry Overview 1.1 Aluminium Alloy Definition 1.2 Aluminium Alloy ... Aluminium Alloy Marketing Aluminium Alloys Analysis 9.1 Aluminium Alloy Marketing Aluminium Alloys Status 9.2 Aluminium Alloy ... 1.4 Aluminium Alloy Industry Overview Chapter Two Aluminium Alloy International and China Market Analysis 2.1 Aluminium Alloy ... 2.2 Aluminium Alloy Industry China Market Analysis 2.2.1 Aluminium Alloy China Market Development History 2.2.2 Aluminium Alloy ...
Magnesium alloy - definition of Magnesium alloy by The Free Dictionary
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 ... Chinese magnesium alloy manufacturer Eontec expects to have its medical magnesium alloy available for clinical trial in 2015 ... Magnesium alloy - definition of Magnesium alloy by The Free Dictionary https://www.thefreedictionary.com/Magnesium+alloy ...
Patent US8556969 - Biocompatible copper-based single-crystal shape memory alloys - Google Patents
... a durable oxide surface layer analogous to the titanium oxide layer that inhibits body fluid reaction to titanium nickel alloys ... We describe herein biocompatible single crystal Cu-based shape memory alloys (SMAs). In particular, we show biocompatibility ... Ti-Ni alloys and Fe-based alloys). In particular, single crystal CuAlNi alloys may have properties that are highly desirable. ... Tini Alloy Company. Shape memory alloy film actuated microvalve. US5344117. 12 Oct 1993. 6 Sep 1994. Robert Bosch Gmbh. Micro- ...
Alloy Software - IT Service Desk and Asset Management Software
The Alloy support team has been an enormous help to me during the implementation of Alloy Navigator. The team has outstanding ... Alloy Software Introduces Intelligent Relationship Mapping to Alloy Navigator Platform. New release helps organizations manage ... Alloy Software Introduces Intelligent Relationship Mapping to Alloy Navigator PlatformJuly 16, 2018 ... I like Alloy Support because the technicians are knowledgeable and help me get the job done. They are also very friendly and ...
Cymbal alloys - Wikipedia
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 ... Cymbal bronzes containing 8% tin are most normally called B8 alloy. Paiste refer to their 8% tin bronze as 2002 alloy. From the ... Bell bronze is a two-phase alloy, meaning some of the tin is not dissolved in the copper grains but exists between them. This ... It is a single-phase alloy and can be cold rolled into sheets, unlike bell bronze. It is readily available as commercial sheet ...
Rolled Alloys - Wikipedia
Rolled Alloys 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 for ... 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 ...
Titanium Alloys Manufacturing | NIOSH | CDC
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. ...
shape memory alloys - Wiktionary
High-entropy alloys | Nature Reviews Materials
High-entropy alloys have greatly expanded the compositional space for alloy design. In this Review, the authors discuss model ... Here, we review recent progress in understanding the salient features of high-entropy alloys. Model alloys whose behaviour has ... exceeding those of conventional alloys, and other outstanding high-entropy alloys are likely to be discovered in the future. ... For the past decade and a half, however, a new alloying strategy that involves the combination of multiple principal elements ...
1060 aluminium alloy - Wikipedia
1060 aluminium alloy is an aluminium-based alloy in the "commercially pure" wrought family (1000 or 1xxx series). It is ... Wrought Aluminium and Aluminium Alloy Sheets, Strips and Plates The alloy composition of 1060 aluminium is: Aluminium: 99.6% ... As a wrought alloy, it is typically formed by extrusion or rolling. It is commonly used in the electrical and chemical ... It has low mechanical strength compared to more significantly alloyed metals. It can be strengthened by cold working, but not ...
Alloys of Metals - Scientific American
Thus an alloy of 21-21 copper, and 78-79 tin, is not brittle ; but an alloy of 34-98 copper, and 65-02 tin is very brittle. ... In alloys of copper and tin-common bronze- an excess of tin renders the alloy soft, as would be expected, because it is the ... Thus an alloy of zinc 50, copper 49, was in hardness as compared with cast iron -604; while an alloy of copper 66, zinc 33, was ... When the copper is increased to make an alloy of 84-68 copper, and 15-32 tin, the brittleness is removed, and the alloy is very ...
Impression Creep of Lightweight Alloys
Citation: Chen, R., Yang, F., and Lu, Y., "Impression Creep of Lightweight Alloys," SAE Int. J. Mater. Manuf. 3(1):120-124, ... Impression Creep of Lightweight Alloys 2010-01-0226. Conventional creep testing requires many samples and therefore is time ... In the present study, the creep behaviors of two lightweight magnesium alloys were studied by using impression creep tests in ...
alloys Archives - ExtremeTech
Aluminum Alloys for Automotive Knuckle Castings
The A206 aluminum alloy is expected to exhibit superior mechanical properties compared to the A356 aluminum alloy. In A206 ... Aluminum Alloys for Automotive Knuckle Castings 2000-01-1291. Knuckle castings for the automotive industry have traditionally ... Similarly, A206 alloy may show a fatigue advantage for the same reason. Regardless of the property values, both these aluminum ... This paper presents mechanical property information on both A206 and A356 aluminum alloys to assist engineers in the design of ...
Ranjeev Alloys Ltd. News | Announcement | Recos
Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended March 31, 2016. For more details, kindly ... Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended December 31, 2016. For more details, ... Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended December 31, 2015. For more details, ... Ranjeev Alloys Statement of Investor Complaint under Reg. 13(3) of SEBI (LODR) Regulations, 2015 for Quarter ended June 30, ...
alloys Archives - Geek.com
3D printing of high-strength aluminium alloys | Nature
Zirconium nanoparticles introduced into aluminium alloy powders control solidification during 3D printing, enabling the ... Aluminium alloy 7075 micropowder. Aluminium alloy 7075 micropowder was purchased from Valimet Inc. The powder consisted of Al ( ... Aluminium alloy 6061 micropowder. Aluminium alloy 6061 micropowder was purchased from Valimet Inc. The powder consisted of Al ( ... Aluminium alloys are a good demonstration platform for our approach, because the only printable aluminium alloys are based on ...
Multicomponent intermetallic nanoparticles strengthen high-entropy alloys
The first two are common to both alloys, whereas the third region was unique to the (FeCoNi)86Al7Ti7 alloy. This region was ... "Our alloys have both excellent strength and ductility because the alloy matrix is ductile, and the second-phase particles are ... In contrast to traditional alloys, the MCINP alloys exhibited a distinctive multi-stage work-hardening behavior. The group used ... Nanoscience & Nanomaterials , Metals & Alloys Multicomponent intermetallic nanoparticles strengthen high-entropy alloys. By ...
Chrome coatings replaced with safer alloys - Redorbit
However, Schuh and his colleagues have developed a new nickel-tungsten alloy that they say is not only safer than chrome, but ... U.S. scientists say theyve created a new alloy to replace chrome as a protective shiny coating, thereby eliminating the ... Schuhs team showed nickel-tungsten alloys remain stable indefinitely at room temperature and are highly resistant to ...
Padmanabh Alloys & Polymers Ltd. News | Announcement | Recos
PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 14/ ... PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 05/ ... PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 06/ ... PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 30/ ...
Alloys: Preparation, Properties, Applications - Wiley Online Library
... primary-metal alloys, light-metal alloys, and some other alloy systems.. The work is based on more than 30 articles from ... In this way some specific properties are improved, making the alloy more attractive than the pure metal. The present work ... Classification, properties, preparation, applications, and economic aspects are discussed for alloy steels, ... comprises essential information on alloys in one compact volume.. ...
Structure of Quenched Ti-Ru Alloys | SpringerLink
Quenched titanium-ruthenium alloys containing 0.25-4 at % ruthenium have been studied using X-ray diffraction analysis, optical ... In Ti-1.5 at % Ru and Ti-2 at % Ru alloys, a martensitic β → α″ transformation occurs. The quenched Ti-3 at % Ru alloy has a β ... Ti-Ru alloys structure α″ phase ω phase Original Russian Text © A.V. Dobromyslov, N.I. Taluts, 2018, published in Fizika ... A. V. Dobromyslov and V. A. Elkin, "β → α and β → ω transformations in Ti-Os alloys," Metall. Mater. Trans. A 30, 231-233 (1999 ...
Alloys from the laser printer
Alloys not feasible by classical casting. However, the manufacture of components using ODS alloys is currently subject to ... Alloys from the laser printer. Rainer Klose Kommunikation. Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt In the ... Titan-Aluminum alloys are combining low density, high strength and oxidation resistance at elevated temperatures and are ... The aim of the awarded PhD thesis of Christoph Kenel was to develop a novel titanium aluminide (TiAl) alloy, particularly for ...
Bronze | alloy | Britannica.com
... alloy traditionally composed of copper and tin. Bronze is of exceptional historical interest and still finds wide applications ... Bronze, alloy traditionally composed of copper and tin. Bronze is of exceptional historical interest and still finds wide ... An alloy described in an 11th-century Greek manuscript in the library of St. Marks, Venice, cites a proportion of one pound ... Bronze is harder than copper as a result of alloying that metal with tin or other metals. Bronze is also more fusible (i.e., ...
Pewter | alloy | Britannica.com
... tin-based alloy used as a material from which domestic utensils were fashioned. A brief treatment of pewter follows. For full ... particularly with the elimination of the lead found in Roman and medieval alloys. Modern pewter ware is a high-tin alloy, ... Most pewter alloys are quite ductile and easily worked. Cold-working does not cause the metal to harden sufficiently to require ... The tinplate sheets of iron or steel dipped in molten tin or pewter (an alloy of tin and copper) were worked into a variety of ...
Alloy Software Releases Alloy Navigator™ 5
Alloy Software, Inc. announces the immediate release of Alloy Navigator™ 5. Based on industry best practices, Alloy ... Alloy Software, Inc. announces the immediate release of Alloy Navigator™ 5. Based on industry best practices, Alloy Navigator™ ... Alloy Navigator™ 5 is fully scalable to handle the most complex business processes, yet flexible to support the ever-changing ... Alloy Navigator™ 5 enables IT departments to implement a service support and asset management system that is closely aligned ...
Exhibitor: MILWARD ALLOYS
These alloys are produced utilizing an induction melting & alloying process followed by static mold or direct chill continuous ... formed into particular alloying compounds Milwards line of master alloys for the aluminum industry include grain refiners, ... Milward manufactures aluminum and copper based master alloys for industries that melt and cast aluminum and copper metals. ... Master alloys are precisely calculated combinations of metal elements, occasionally with chemical additives, ...
Painting Alloys | AVForums
Has anyone had alloys painted before? Scuffed one of mine the other day so going to get them refurbed but also painted black. ... Has anyone had alloys painted before?. Scuffed one of mine the other day so going to get them refurbed but also painted black. ... If youre getting the alloys powder coated, they should be left to fully cure for 2-3 days before having tyres mounted on them. ... If youre getting the alloys powder coated, they should be left to fully cure for 2-3 days before having tyres mounted on them ...
IBC Advanced Alloys Reports Q2 2020 Financial Results
Copper Alloy Sales Higher: Sales in the Copper Alloy division also were higher Q/Q and Y/Y. In the quarter, sales of $2.7 ... ABOUT IBC ADVANCED ALLOYS CORP.. IBC is a leading beryllium and copper advanced alloys company serving a variety of industries ... Copper Alloys posted a net loss of $366,000 in the quarter, which compared to a loss of $548,000 in the prior-year period. The ... In the Copper Alloys division, sales in the quarter of $3.6 million were 31% higher than sales of $2.7 million in fiscal Q2 of ...
The Rarer Metals and their Alloys - Scientific American
Alloys by Mr Collinson on Prezi
MicrostructureNitinolAluminium alloysCharacteristicsTemperatureBehaviorMechanical PropertiesHighSpecial alloysPropertiesShape memory alloyParticlesMaterialsMagnesium2020AluminiumRoom temperature60612019AbstractMicrostructure2016Zirconium alloysTemperaturesCompositesCorrosionBeryllium-AluminumTernaryCommon alloysBinary AlloysTitanium AlloysThermalMetalLeslie MorgensteinMulticomponentBrittleMaterNickel-titanCompdProductsMetallurgyForm an alloyMechanicalOxidationTransformationsSuitableCommercially availableStabilityMeltHigh-temperatureEntropyCopper alloyHomogeneous mixtureContentCharacteristicsConventionalCompositionsAluminum AlloyMarkets
- Predominantly used shape memory alloy is made of Nickel and Titanium known as Nitinol. (openpr.com)
- By leveraging the core competence in special metallurgy and industrial high volume production capabilities, SAES Getters, as a Shape Memory Alloys (SMA)/Nitinol world leader supplier and manufacturer, offers a highly diversified product portfolio of Nitinol trained wires, Nitinol springs and components, serving any need around industrial and medical applications. (saesgetters.com)
- Shape memory alloys market have gained much attention in the recent years due to alloys unique characteristics, properties, and application in addressing typical design complexities. (openpr.com)
- Owing to the exceptional characteristics of the shape memory alloys they have application across different end-user industries. (valuemarketresearch.com)
- forming the protective outer layer comprising aluminum oxide in the surface region of the single crystal copper-based shape memory alloy by a controlled process of doping the surface region with Al after forming the single crystal copper-based shape memory alloy, anodizing the surface region of the single crystal copper-based shape memory alloy, and/or applying a high voltage to the single crystal copper-based shape memory alloy. (google.com.au)
- Other niche applications of shape memory alloy market include endodontics, orthopedic surgery, and telecommunication. (openpr.com)
- Increasing life expectancy and advancement in surgical procedures will create great opportunityfor shape memory alloy market. (openpr.com)
- Technological advancement and broader availability of alloy is expected to drive the shape memory alloy market. (openpr.com)
- Booming aerospace, automotive, healthcare, and other end-use industries are driving the regional shape memory alloy market. (valuemarketresearch.com)
- Apple further points out that the actuation members described may be formed at least partially from one or more shape-memory alloy (SMA) materials that change shape (e.g., expands or contracts) in response to an applied electrical current. (patentlyapple.com)
- According to Bucsek, the gap between the development of a shape memory alloy and its implementation is similar to the problem encountered by scientists with other advanced materials. (edgy.app)
- In the present study, the creep behaviors of two lightweight magnesium alloys were studied by using impression creep tests in the temperature range of 408-443K and under the punching stress range of 1.68-60.4 MPa. (sae.org)
- The density of magnesium is very low, so alloys that are made mainly from it are very light. (everything2.com)
- The VW Beetle contains a lot of magnesium alloy parts. (everything2.com)
- The Company also produces Beryllium-Aluminum alloys designed to control oxidation and reduce magnesium loss. (tms.org)
- Standardization in the field of aluminium, magnesium, titanium, their alloys (i.e. alloys in which aluminium, magnesium or titanium is the principal element) and aluminium ores (aluminium ores and minerals used either for obtaining the metal aluminium and the intermediate aluminium compounds, or by other industries). (iso.org)
- An aluminum casting alloy contains 0.5 to 2.0 w. % magnesium max. (google.com)
- 4. Aluminum casting alloy according to claim 1 , wherein the alloy contains 0.6 to 1.2 weight % magnesium. (google.com)
- Although the range of l to 80 ppm for magnesium and the upper limit of 900 ppm calcium of the claimed alloy were disclosed as end- points of preferred ranges, the lower limit of 690 ppm calcium was only taken from an example for a specific alloy (melt No. 8). (epo.org)
- 1060 aluminium alloy is an aluminium-based alloy in the "commercially pure" wrought family (1000 or 1xxx series). (wikipedia.org)
- It is fundamentally very similar to 1050 aluminium alloy, with the difference coming down to 0.1% aluminium by weight. (wikipedia.org)
- We selected the nucleants on the basis of crystallographic information and assembled them onto 7075 and 6061 series aluminium alloy powders. (nature.com)
- After functionalization with the nucleants, we found that these high-strength aluminium alloys, which were previously incompatible with additive manufacturing, could be processed successfully using selective laser melting. (nature.com)
- The increasing use of aluminium alloys in high demand applications has lead to the development of a number of surface treatment technologies designed to improve hardness and wear characteristics. (diva-portal.org)
- This thesis investigates the combination of a high power laser beam and an electric arc to produce new surfaces on aluminium alloys. (diva-portal.org)
- Topics covered include: * The physics of the laser-arc-material surface interaction * Surface remelting of aluminium alloys * Surface alloying of aluminium alloys with Si, Fe and Ni * Arc stabilisation by laser irradiation * Optimisation of the laser-arc process parameters * Metallographic examination of the surfaces generated by laser-arc melting and analysis of the solidification rates. (diva-portal.org)
- And also listed Aluminium Alloy upstream raw materials equipments and down stream clients survey analysis and Aluminium Alloy marketing Aluminium Alloys industry development trend and proposals. (slideshare.net)
- In the end, The report introduced Aluminium Alloy new project SWOT analysis Investment feasibility analysis investment return analysis and also give related research conclusions and development trend analysis on Global and China Aluminium Alloy industry. (slideshare.net)
- In a word, it was a depth research report on Global and China Aluminium Alloy industry. (slideshare.net)
- And thanks to the support and assistance from Aluminium Alloy industry chain related technical experts and marketing engineers during Research Team survey and interviews. (slideshare.net)
- 3. 12.1 Aluminium Alloy Project Swot Analysis 12.2 Aluminium Alloy New Project Investment Feasibility Analysis chapter Thirteen Global And China Aluminium Alloy Industry Research Conclusions ResearchMoz(http://www.researchmoz.us/) is the one stop online destination to find and buy market research reports & Industry Analysis. (slideshare.net)
- Such an alloy is two-phase at room temperature, like bell metal, and cannot be cold-rolled so the cymbals must be produced by the traditional casting process. (wikipedia.org)
- In A206 aluminum alloy higher strength is achieved both at room temperature and at elevated temperatures because of higher copper and lower silicon contents. (sae.org)
- Schuh's team showed nickel-tungsten alloys remain stable indefinitely at room temperature and are highly resistant to decomposition when heated. (redorbit.com)
- The topic is very challenging, since TiAl alloys are inherently brittle at room temperature, and the rapid solidification conditions during AM can lead to complex phase transformation sequences, pronounced element segregation and cracking. (idw-online.de)
- In the pb-1 sb alloy, polygonized substructure was developed by initial rolling at room temperature, annealing at 220 deg c and then rolling in one pass to 5 percent reduction at 175 deg c and air cooling. (cdc.gov)
- 1. A cast and forged titanium alloy with ductility at room temperature and good high temperature strength, consisting essentially of by weight percent 31-36 aluminum, 0.1-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0.1V, bal Ti). (google.co.uk)
- 2. A cast and forged titanium alloy with ductility at room temperature and good high temperature strength, consisting essentially of by weight percent 34-36 aluminum, 0.7-2.0 vanadium, balance titanium (in atomic percent, about: 48-50Al, 0.5-1.5V, bal Ti). (google.co.uk)
- The effects of the alloying elements Al and Ti, which are added in AlCoCrFeNi alloy, have been widely investigated because of their excellent room-temperature mechanical properties, which are even superior to most of the high-strength bulk amorphous alloys [11, (thefreedictionary.com)
- Padmanabh Alloys & Polymers Board Meeting Intimation for Considering Un-Audited Financial Results For Half Year Ended On 30/09/2019. (indiatimes.com)
- PADMANABH ALLOYS & POLYMERS LTD.has informed BSE that the meeting of the Board of Directors of the Company is scheduled on 14/11/2019 ,inter alia, to consider and approve un-audited financial results for half year ended on 30/09/2019. (indiatimes.com)
- Padmanabh Alloys & Polymers Intimation Of Annual General Meeting To Be Held On 30Th September, 2019. (indiatimes.com)
- Padmanabh Alloys & Polymers Board Meeting Intimation for Considering And Approving Un-Audited Financial Results For First Quarter Ended 30.06.2019. (indiatimes.com)
- Microstructure characterization of AlxCoCrCuFeNi high-entropy alloy system with multi-principal elements. (nature.com)
- The fundamental aspects include both the microstructure development and characterization, and the rheology of alloy slurries with special attention to both experimental determination and modeling. (springer.com)
- The microstructure and the thermal behavior of the alloys were analyzed by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and differential thermal analysis (DTA). (hindawi.com)
- 19 , 20 ] also investigated the glass formability in the melt-spun Al-Co-Y alloys by the microstructure evolution and reported that Al 88 Co 5 Y 7 alloy with the thickness of 230 μ m has the best GFA of the Al-Co-Y ternary systems. (hindawi.com)
- Ranjeev Alloys Ltd has submitted to BSE the Shareholding Pattern for the Period Ended December 31, 2016. (indiatimes.com)
- Ranjeev Alloys Ltd has informed BSE regarding Quarterly Statement on Investor Complaints / Grievances Redressal Mechanism for the Quarter ended December 31, 2016, under Regulation 13(3) of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. (indiatimes.com)
- Titan-Aluminum alloys are combining low density, high strength and oxidation resistance at elevated temperatures and are therefore of high technical relevance e.g. in aerospace engineering. (idw-online.de)
- Oxide dispersion strengthened (ODS) alloys are a class of materials that offer an unmatched combination of deformation-, creep-, coarsening- oxidation- and corrosion resistance at temperatures up to 1,000 °C. (idw-online.de)
- As is well known to those skilled in the art, certain magnetic iron-nickel alloys are particularly useful in making indicating instruments, such as magnetic speedometers, almost completely independent of variations in temperature over an unusually wide range of temperatures. (google.com)
- If the carbon content is merely reduced, the martensitic transformation temperature is raised so that the alloy irreversibly loses its high permeability if exposed to the low temperatures to which it is often liable to be subjected in use. (google.com)
- Cast and forged titanium alloys suited for use at temperatures over 600 C. are based on TiAl gamma phase structure. (google.co.uk)
- Useful alloys have about 1.5% or greater tensile ductility at temperatures of 260 C. and below, thereby making them fabricable and suited for engineering applications. (google.co.uk)
- The present invention relates to titanium alloys usable at high temperatures, particularly those of the TiAl gamma phase type. (google.co.uk)
- To be useful at higher temperatures, titanium alloys need the proper combination of properties. (google.co.uk)
- Most nickel alloys demonstrate strength, longevity, as well as dependability even in toughest atmospheres at high temperatures. (dailystrength.org)
- REL61 provides significant advantages over other no-low silver alloys by offering better flow characteristics at lower temperatures, thus reducing PCB damage and assembly costs. (prweb.com)
- have introduced four criteria that have to be satisfied in the selection process of alloying elements in order to obtain castable, precipitation-strengthened aluminum alloys with both high stability and strength at elevated temperatures. (thefreedictionary.com)
- Affordable, lightweight and capable of withstanding temperatures 100 degrees Celsius higher than commercially available automotive cast alloys, ACMZ is proving to be suitable for the next generation of internal combustion engines, enabling the industry to advance toward its target of 54.5 miles per gallon by 2025. (ornl.gov)
- Current alloys inhibit engine efficiency because they soften at the peak temperatures present in highly efficient advanced engines. (ornl.gov)
- Rolled Alloys is a supplier in the metal industry for both heat resistant and corrosion resistant alloys. (wikipedia.org)
- The company claims that, as a result, its alloys feature a higher yield strength, hardness, corrosion- and wear-resistance, and superior strength/weight ratio to traditional metals and alloys. (eweek.com)
- You already know that nickel alloys offer wonderful corrosion resistance. (dailystrength.org)
- Liu says that the research group's general approach was to start with a ternary iron-cobalt-nickel alloy with moderate strength and ductility. (cambridge.org)
- For the guide wire application, a distal core section is made of the nitinol alloy with a ternary element addition thus improving radiopacity over that of distal core section made from a binary nickel-titanium alloy. (google.ca)
- 5. The guide wire of claim 1, wherein the alloy comprises about 30 to about 52 percent titanium and the balance nickel and up to about 10 percent of one or more additional ternary alloying elements. (google.ca)
- The alloys with different compositions in the Al-rich corner of the Al-Co-Y ternary system were prepared by conventional casting and further processed by melt-spinning technique. (hindawi.com)
- On the other hand, just a few works have been reported for the other ternary system, Al-Co-Y alloys. (hindawi.com)
- 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)
- A. V. Dobromyslov and V. A. Elkin, "Martensitic transformation and metastable β-phase in binary titanium alloys with d-metals of 4-6 periods," Scr. (springer.com)
- A. I. Antipov and V. N. Moiseev, "On the coefficient of stablization β of titanium alloys," Metalloved. (springer.com)
- L. N. Guseva and L. K. Dolinskaya, "Metastable phases in titanium alloys with Group VIII elements quenched from the β field," Izv. (springer.com)
- A. V. Dobromyslov, "Phase transformations and structure of titanium alloys," in New promising materials and new technologies , Ed. by N. I. Noskova (UrO RAN, Ekaterinburg, 2001) [in Russian]. (springer.com)
- E. V. Collins, Physical Metallurgy of Titanium Alloys (Metallurgiya, Moscow, 1988) [in Russian]. (springer.com)
- Titanium alloys have found wide use in gas turbines in recent years because of their combination of high strength and low density, but generally, their use has been limited to below 600 C. by inadequate strength and oxidation properties. (google.co.uk)
- While major work was performed in the 1950's and 1960's on lightweight titanium alloys for higher temperature use, none have proved suitable for engineering application. (google.co.uk)
- Basically, useful high temperature titanium alloys must at least outperform those metals they are to replace in some respects, and equal them in all other respects. (google.co.uk)
- It is seen that prior titanium alloys had inferior properties to nickel alloys. (google.co.uk)
- One instance is the Nickel-Titanium alloys. (dailystrength.org)
- Huang, P. K., Yeh, J. W., Shun, T. T. & Chen, S. K. Multi-principal-element alloys with improved oxidation and wear resistance for thermal spray coating. (nature.com)
- Early soft soldering used pure tin (Sn), yet gradually alloys were sought that would fix issues like thermal cycling, shock resistance, electron migration, and the development of whiskers in tin-based alloys. (hackaday.com)
- His research is combining simulations that model atomic interactions and experiments involving real-time ion irradiation exposure and mechanical testing to understand the fundamental mechanisms responsible for the alloys' thermal stability, radiation tolerance and mechanical performance. (stonybrook.edu)
- Suitable thermal and mechanical treatments will produce extensive rearrangements of the atoms in metals and alloys, and corresponding marked variations in physical and chemical properties. (elsevier.com)
- This makes the metal harder and more brittle than a single-phase alloy, and also affects the way the metal responds to hardening by hammering and lathing, and greatly restricts the use of mechanised techniques of manufacture. (wikipedia.org)
- Paiste calls this Signature Bronze or Sound Formula, and for a time produced no bell metal cymbals, but now produces high-end cymbals of both this alloy and bell bronze. (wikipedia.org)
- Wai In a series of bronze alloys containing tin \fi and copper, it was found that an excess of tin ^U was the cause of softness, while an excess of :opper, although it is such a malleable metal, is the-cause of brittleness. (scientificamerican.com)
- In alloys of copper and tin-common bronze- an excess of tin renders the alloy soft, as would be expected, because it is the softer metal. (scientificamerican.com)
- Our approach to metal-based additive manufacturing is applicable to a wide range of alloys and can be implemented using a range of additive machines. (nature.com)
- In metal-based additive manufacturing, application of a direct energy source, such as a laser or electron beam, to melt alloy powders locally results in solidification rates between 0.1 m s −1 and 5 m s −1 , an order of magnitude increase over conventional casting processes. (nature.com)
- Given that rastering of this direct energy source (such that it follows a pattern of slightly overlapping lines in a back and forth pattern) to continuously fuse successive layers of powder is analogous to welding processes, it is not surprising that the suite of printable metal alloys are limited to those known to be easily weldable. (nature.com)
- The limitations of the currently printable alloys, especially with respect to specific strength, fatigue life and fracture toughness, have hindered metal-based additive manufacturing from maturing to its full potential. (nature.com)
- Figure 1: Additive manufacturing of metal alloys via selective laser melting. (nature.com)
- In this way some specific properties are improved, making the alloy more attractive than the pure metal. (wiley.com)
- Bronze is harder than copper as a result of alloying that metal with tin or other metals. (britannica.com)
- Master alloys are precisely calculated combinations of metal elements, occasionally with chemical additives, formed into particular alloying compounds Milward's line of master alloys for the aluminum industry include grain refiners, modifiers, and hardeners. (tms.org)
- Alloy is baser metal mixed with it. (everything2.com)
- In particular, Trelewicz is interested in nanostructured metal alloys (metals mixed with other elements) that incorporate nanometer-sized features into classical materials to enhance their performance. (stonybrook.edu)
- relative freedom of a noble metal from alloy or other impurities," from Anglo-French alai , Old French aloi , from aloiier (see alloy (v.)). Meaning " base metal alloyed with a noble metal" is from c.1400. (dictionary.com)
- Apple's future iPods, iPads and Macs could be super-durable and lightweight, after the company signed a deal with Liquidmetal Technologies to license the latter's IP for a specialized metal alloy. (eweek.com)
- Apple products could become a little lighter and a lot tougher, after the company signed an agreement with Liquidmetal Technologies to use the latter's metal alloys in their products. (eweek.com)
- An amalgam is an alloy of a metal and mercury. (encyclopedia.com)
- Unfortunately for these materials scientists, the interaction of heat and gravity in a sample of molten metal creates currents of rising and falling material, preventing some metals from alloying and overwhelming the subtle interactions between molecules of pure metals and metals that do mix well. (thefreedictionary.com)
- A shape memory alloy (SMA, also known as a smart metal, memory alloy, or muscle wire) is an alloy that "remembers" its shape, and can be returned to that shape after being deformed, by applying heat to the alloy. (novapublishers.com)
- The remainder of the Alloy management team is expected to stay in place, including Alloy Entertainment toppers Leslie Morgenstein and Bob Levy, who have shepherded the company's book-to-TV adaptations, which also include ABC Family's new series "Pretty Little Liars. (variety.com)
- He reports to Alloy Entertainment topper Leslie Morgenstein. (variety.com)
- Cantor, B. Multicomponent and high entropy alloys. (nature.com)
- Chain Tsuan Liu of the City University of Hong Kong together with colleagues in Hong Kong and other institutions in China have now brought the spirit of HEAs to another materials frontier, nanoparticles, to make quinary alloys laced with multicomponent intermetallic nanoparticles (MCINPs), thereby simultaneously achieving high strength and ductility. (cambridge.org)
- Structure and composition of a two-phase quinary alloy containing multicomponent intermetallic nanoparticles (MCINPs). (cambridge.org)
- Multicomponent Phase Diagrams: Applications for Commercial Aluminum Alloys aims to apply multi-component phase diagrams to commercial aluminum alloys, and give a comprehensive coverage of available and assessed phase diagrams for aluminum-based alloy systems of different dimensionality. (elsevier.com)
- This paper describes some underlying principles of multicomponent and high entropy alloys, and gives some examples of these materials. (mdpi.com)
- Different types of multicomponent alloy and different methods of accessing multicomponent phase space are discussed. (mdpi.com)
- but an alloy of 34-98 copper, and 65-02 tin is very brittle. (scientificamerican.com)
- On the other hand, an increased quantity of copper-from but one-third to that of the quantity of tin in the bronze, up until it (the copper) is four times the quantity of tin-renders the alloy brittle, a result which would not be expected, judging from the nature of the metals in their simple conditions. (scientificamerican.com)
- A federal law to further reduce the amount of lead in drinking water has manufacturers of copper alloy plumbing fixtures, fittings and valves replacing their products with ones manufactured with new copper alloys that do not contain lead. (asme.org)
- The new lead-free products are giving standards-setting organizations pause because the lead-free alloys have not been fully vetted for high-pressure use. (asme.org)
- Alloy Navigator™ 5 offers a robust and comprehensive framework for IT service delivery and support, traditionally available only in high-cost enterprise-level products, yet is competitively priced. (prweb.com)
- While lead (Pb) managed to fill this role for most soldering applications, the phasing out of lead from products, as well as new requirements for increasingly more fine-pitched components have required the development of new solder alloys that can fill this role. (hackaday.com)
- Traditional engineering resins and polymer alloys/blends have been "around" for decades and, yet, there are few studies that analyze in detail all of the major materials involved in terms of plant capacities, markets by application, new technologies and products, and rationales for anticipated growth. (redorbit.com)
- AIM produces advanced solder products such as solder paste, liquid flux, cored wire, bar solder, epoxies, lead-free and halogen-free solder products, and specialty alloys such as indium and gold for a broad range of industries. (prweb.com)
- It has low mechanical strength compared to more significantly alloyed metals. (wikipedia.org)
- This paper presents mechanical property information on both A206 and A356 aluminum alloys to assist engineers in the design of knuckle castings in aluminum. (sae.org)
- However, the addition of alloying elements has shown little influence on the electrical conductivity, although some of these can improve the mechanical strength, recrystallization temperature, and wear resistance. (thefreedictionary.com)
- A. V. Dobromyslov and V. A. Elkin, "β → α and β → ω transformations in Ti-Os alloys," Metall. (springer.com)
- Despite decades of extensive research and application, commercial aluminum alloys are still poorly understood in terms of the phase composition and phase transformations occurring during solidification, cooling, and heating. (elsevier.com)
- Regardless of the property values, both these aluminum alloys are suitable for automotive casting production usage and this this information is intended to assist suspension a knuckle designer in switching from iron to aluminum. (sae.org)
- The aluminum casting alloy is particularly suitable for diecasting and thixocasting or thixoforging. (google.com)
- 0.2 weight %, wherein said alloy is suitable for thixocasting or thixoforging. (google.com)
- The data is not there to support high-pressure, high-temperature' alloys, says Mark Clark, a codes and standards engineer with NIBCO INC., Elkhart, IN. (asme.org)
- A cylinder head made of lightweight, high-temperature ACMZ, a new suite of aluminum-based alloys developed by researchers at ORNL. (ornl.gov)
- For the past decade and a half, however, a new alloying strategy that involves the combination of multiple principal elements in high concentrations to create new materials called high-entropy alloys has been in vogue. (nature.com)
- Here, we review recent progress in understanding the salient features of high-entropy alloys. (nature.com)
- Fig. 4: A mechanistic approach to the design of high-entropy alloys. (nature.com)
- Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes. (nature.com)
- Miracle, D. B. & Senkov, O. N. A critical review of high entropy alloys and related concepts. (nature.com)
- Shun, T. T., Hung, C. H. & Lee, C. F. Formation of ordered/disordered nanoparticles in FCC high entropy alloys. (nature.com)
- An understanding of high entropy alloys from phase diagram calculations. (nature.com)
- Lately, researchers have achieved some success with high-entropy alloys (HEA), those with five or more elements in roughly equal proportions. (cambridge.org)
- Alloy has earned a unique position as both creator and distributor of content that has captured the imagination of the millennial generation," said ZelnickMedia chief Strauss Zelnick . (variety.com)
- Indeed, the carbon content of the alloys normally used is about 0.2%, though it may vary from this by amounts which have been considered negligible but which are in fact important. (google.com)
- The carbon content, as will be ap preciated by those skilled in the art, is diflicult to control within narrow limits, particularly if the alloy is made by melting. (google.com)
- Our ELVALOY™ Copolymer Alloys are enhancing the characteristics of other resins, making them more durable, more flexible, and longer lasting. (dow.com)
- Alloys often have unexpected characteristics. (dictionary.com)
- Nickel alloys are used in several instruments to regulate the electric characteristics. (dailystrength.org)
- Types of nickel alloys that manage electrical characteristics consist of Cu-Ni (having 2-45% nickel), Ni-Cr-Al (containing 35-95% nickel), special alloy Ni-Cr-Fe (including 35-60% nickel) as well as Ni-Cr-Si (having 70-80% nickel). (dailystrength.org)