Metal materials are the earliest biomedical materials used in clinical medicine. Currently, metal materials used in surgical implants and orthopedic instruments mainly include stainless steel, cobalt-based alloy and titanium alloy, which account for about 40% of the market share of the whole biomaterial products. Among them, titanium alloy has been widely used in the repair, correction and replacement of defects, injuries and diseases in hard tissues (including all bones and teeth in the body).
Continue Reading →Metallic materials, as biomedical functional materials, are an important branch of materials science. They have been used in human implants for more than 400 years. In Britain, pure gold plate was used earlier to repair skull and insert teeth. Later, silver, iron plate, iron wire and iron base alloy were used to fix fracture joints.
Continue Reading →The melting process of tantalum alloy in industrial production is similar to that of pure metal, but the specific process is different. The powder is first made into alloy billets, and then ingots or castings are obtained by sintering or casting at high temperature. However, the fusion casting method is mostly used, and the fusion casting method is mainly electron beam melting and electric arc furnace melting.
Continue Reading →Titanium has good affinity with human body connective tissue and bone epithelial tissue, and its excellent mechanical properties also reflect its advantages in medical alloys. Moreover, titanium is of low density, light weight, good corrosion resistance and comfortable to wear. Therefore, titanium is widely favored as a denture (dental implant). In addition, titanium denture after surface treatment, aesthetic performance increased, can meet the public demand for beauty, give a person with visual enjoyment.
Continue Reading →Metal magnesium, magnesium, known as "defense" of the reputation, magnesium is one of the lightest structural metallic materials, but also has specific strength and specific stiffness, high damping property and the advantages of good machinability, easy recycling, manufacture magnesium alloy, is the production of spacecraft, military aircraft, missiles, high maneuver performance vehicles, ships the essential structure of the material, and with its burning heat light, is widely used in manufacturing flares, Molotov cocktails, etc.
Continue Reading →Niobium has a very low capture cross section for thermal neutrons and is therefore of considerable use in the nuclear industry. Tantalum can be used to make evaporator, as well as electrode, rectifier and electrolytic capacitor of electron tube. Medically, it is used to make thin slices or threads to repair damaged tissue. Tantalum niobium ore is the general name of the mineral containing tantalum and niobium. Used for preparing tantalum oxide and oxidation.
Continue Reading →Zirconium is a kind of active metal with great affinity with oxygen. The excellent corrosion resistance of the oxide film determines that it is suitable for multiple corrosion environments.
Continue Reading →Tungsten is an important alloying element in iron and steel industry, which can improve the strength, hardness and corrosion resistance of steel. Spinning processing need tooling mainly includes the wheel, core mold, the tail and other auxiliary equipment, in the process of molybdenum crucible spinning, PuXuan process due to the change of product taper, the mandrel must be compatible with gradient of core modules, in the process of large molybdenum crucible PuXuan, using three different taper of mandrel after products to ensure that the final forming of taper containing tungsten carbide (tungsten carbide), high hardness, wear resistance, corrosion resistance and heat resistance, used in the manufacture of drill bits, cutting tools, and high temperature resistant parts, etc. Tungsten billet is prepared by powder metallurgy.
Continue Reading →Almost all superconducting alloy materials with practical value are niob-based alloys, mainly including niob-zirconium (Nb -- zr), niob-titanium (Nb -- Ti) and niob-zirconium -- Ti (Nb -- Z -- Ti). The composition range (%) is Nb -- (25 -- 35) zr, Nb -- (45 -- 55)Ti and Nb -- 42Zr -- 10Ti, Tc is 11 -- 11.5k, 9 -- 9.5k and 10.3k, respectively. Hc2 at 4.2k temperature is 8 -- 9.5t, 11.5 -- 12.5t and 10.5t, respectively. Jc under 4.2k5t was 1000A/mm2, 3800A/mm2 and 2800A/mm2, among which nb-ti still had Jc value of 1600A/mm2 under the high magnetic field of 8T.
Continue Reading →Vanadium in the earth's crust is about 0.02 percent of the earth's crust, spread widely but loosely. More than 70 kinds of vanadium mineral deposits have been found, among which the vanadium oxides such as green sulfur vanadium ore, vanadium mica ore and vanadium lead-zinc ore are as high as 8-20%. Vanadium titanium magnetite contains low grade vanadium, generally containing 0.2-1.4% v2o5, but it has the largest reserves, the international reserves of more than 40 billion tons, is the primary material for the extraction of vanadium.
Continue Reading →Modern aircraft have a maximum speed of 2.7 times the speed of sound. Flying so fast at supersonic speed, the plane will rub against the air and generate a lot of heat. At 2.2 times the speed of sound, aluminum alloys can't stand it. Will High temperature resistant titanium alloy shall be used. When the thrust-weight ratio of aero-engine increases from 4 ~ 6 to 8 ~ 10, and the compressor outlet temperature increases correspondingly from 200 ~ 300℃ to 500 ~ 600℃, the original low-pressure compressor disc and blade made of aluminum must be converted to titanium alloy.
Continue Reading →Titanium alloy refers to titanium based alloy with the addition of other elements.Tungsten alloys are alloys based on tungsten with the addition of other elements.
Continue Reading →With the rapid development of electronics and information industry, the demand for sputtering target materials is increasing. All kinds of sputtering thin film materials have been widely used in semiconductor integrated circuit, recording medium, plane display and photovoltaic cell.
Continue Reading →Niobium mineral deposits are primarily ferroniobium (manganese) ore, etc., and the extraction of niobium mainly includes the process of differentiation of concentrate, separation of tantalum niobium, preparation of compounds and metals, and essence. The ore can be differentiated by differentiation, melting and chlorination. The separation of tantalum and niobium can be carried out by solvent extraction (the commonly used extraction agents are methyl isobutyl ketone, tributyl phosphate, sec-octanol and acetamide, etc.), fractional crystallization method and ion exchange method.
Continue Reading →The main ways of strengthening niobium are solid solution, precipitation and deformation heat treatment. In niobium alloy, the high temperature and low temperature strength can be significantly improved by containing alloy elements tungsten and molybdenum, but too much content will reduce the technological properties of the alloy. Tantalum is a medium strengthening element and can reduce the ductile - brittle transition temperature of alloys.
Continue Reading →Zirconium alloys are highly resistant to corrosion in most organic acids, inorganic acids, salt solutions, strong alkalis, and molten salts. But zirconium alloy has better corrosion resistance than titanium in hydrochloric acid system. Zirconium alloys are expensive -- four times as expensive as graphite and two times as expensive as titanium -- but in corrosive environments, graphite can withstand high temperatures, but not high pressures.
Continue Reading →The method and process of titanium-zirconium ore processing depend on the type of deposit, the nature of ore and the composition of mineral deposits. Considering that the primary titanium ore (vein ore) is near to the ore property, the intended mineral variety is relatively simple, and the selection method and technological process are common.
Continue Reading →Tantalum niobium deposits are mainly tantalum iron and burnt greenstone. Tantalum niobium iron ore contains a lot of tantalum is called tantalite, niobium iron ore contains a lot of niobium.
Continue Reading →The traditional processing of titanium alloy generally adopts melting and casting technology, and the latest processing technology can be divided into the following:
Continue Reading →1. The largest titanium users in the aerospace field are concentrated in western countries, especially the United States. 60% of titanium materials are used in this field. Asian countries, Japan and China have all invested about 10 per cent in the sector. However, with the rapid development of Asian aerospace in recent years, the consumption of titanium in the aerospace field will increase accordingly.
Continue Reading →Noble metal alloy is an alloy based on a metal in a precious metal and composed of other elements. Precious metal alloy has the main characteristics of precious metal, for its specific use, it has better physical, chemical and mechanical comprehensive properties than single precious metal, as well as high reliability, stability and long life.
Continue Reading →Niobium alloy is an attractive high temperature material with good high temperature strength and low temperature plasticity. In addition, niobium has a series of excellent properties such as small thermal neutron absorption cross section, resistance to liquid metal corrosion and good superconductivity (such as Nb3Sn intermetallic compound, palladium - misalloy and niob-titanium alloy), which makes niobium alloy considered as one of the most promising high-temperature materials.
Continue Reading →The technique of using two pure metals, niobium and titanium, to form an electrode in proper form, and to melt and form an ingot under vacuum.Niobium and titanium are active, refractory rare metals that form solid - soluble gold with each othThe alloy as part of the first Ⅱ superconductors, high on the critical field (Hc2). Nb-ti solid dissolved gold can precipitate nb-ti solid dissolved gold under low temperature aging treatment, which makes it have high critical current density.
Continue Reading →Sputtering is one of the main techniques for preparing thin film materials. The accelerated ions are bombarded with the solid surface. The ions exchange momentum with the atoms on the solid surface, causing the atoms on the solid surface to leave the solid and deposit on the substrate surface. This process is called sputtering. The bombarded solid is the source material for deposition of thin films by sputtering, usually called target material. Sputtering is a key process in semiconductor chip manufacturing. The quality of sputtering target plays a crucial role in the quality of sputtering films.
Continue Reading →For us, metal, is a very familiar material, the author of daily life, a very wide range of USES, and we use metal history, is quite long. As early as 3-4000 years ago, we ancient people began to use iron products as tools.
Continue Reading →Titanium alloy is widely used in aircraft structural parts and heat-resistant parts. It is one of the main structural materials of aircraft and engines in modern times and is known as "space metal".
Continue Reading →Oxygen evolution anode resistance, mainly used in oxygen reaction, especially suitable for acidic electrolyte, such as a certain concentration of sulphuric acid electrolyte, low oxygen, can be used to put oxygen electrolysis, also resist the corrosion of chlorine, chlorine can be used to feed oxygen and electrolysis, such as seawater electrolysis, etc.
Continue Reading →Tantalum tungsten alloy is a very important and widely used high temperature and high strength material in tantalum alloy, especially high tantalum tungsten alloy, which is widely used in some extremely harsh conditions. Tantalum alloy with high tungsten content has higher creep strength and lower creep speed, so it is a good candidate material for heat-resistant components.
Continue Reading →No reaction to hydrochloric acid, concentrated nitric acid and aqua regia, whether in cold or hot conditions. When tantalum is immersed in sulfuric acid at 200℃ for one year, only 0. 006 mm. Experiments show that tantalum does not work on alkali solution, chlorine gas, bromine water, dilute sulfuric acid and many other agents at room temperature, but only reacts with hydrofluoric acid and hot concentrated sulfuric acid. Such conditions are relatively rare in metals.
Continue Reading →In stamping parts processing, there are various kinds and USES of stamping parts, so there are different requirements for their materials. This will cause the processed products to fail to meet the performance requirements. Due to poor forming performance, some measures must be taken to improve the manufacturing cost of parts.
Continue Reading →Tantalum alloy formed by adding certain amount of tungsten elements to tantalum base. Ta-W binary series alloy of tantalum and tungsten is an infinite solid solution. The strength of the alloy increases with the increase of tungsten content, but the plasticity of the recrystallized alloy decreases significantly with the increase of 12% ~ 14%(atomic fraction) (see figure).
Continue Reading →Niobium tin superconducting alloy refers to niobium tin superconductor which belongs to A15 intermetallic compound and is a cubic crystal system with critical temperature T= 18.1k and critical magnetic field U=26T(4.2k). Niobium tin superconducting alloy is brittle and difficult to be processed into profiles. Nb3Sn profiles are generally prepared by the method of first forming and then diffusion reaction. New production techniques such as in situ method and plasma spraying can produce Nb3Sn multistrand fine wire complex. Adding titanium to Nb3Sn line can significantly improve the magnetic field strength.
Continue Reading →Superconducting materials are materials with properties of zero resistance and repulsive magnetic field lines at a certain low temperature. Twenty-eight elements and thousands of alloys and compounds have been found to be superconductors. Superconducting materials can be divided into element materials, alloy materials, compound materials and superconducting ceramics according to their chemical composition.
Continue Reading →In the metal titanium, niobium wire niobium zirconium made alloy ingots. First, roll the niobium zirconium alloy ingots to a suitable size, the pickling surface of the niobium rod to remove oil and impurities, and then clean with water, trim both ends of the niobium alloy rod, and then clean again. Finally, the niobium silk is trimmed and stretched many times according to the actual needs until a suitable size is found.
Continue Reading →Precious metals mainly refer to 8 metal elements including gold, silver and platinum group metals (ruthenium, rhodium, palladium, osmium, iridium and platinum). Most of these metals have a beautiful color, strong chemical stability, and generally do not react with other chemicals. Platinum group metals, also known as platinum group elements.
Continue Reading →1. Aerospace
Titanium used in aerospace is concentrated in western countries, especially the United States, where 60 percent of titanium is used in this field. Asian countries, Japan and China have all invested about 10 per cent in the sector. However, with the rapid development of Asian aerospace in recent years, the consumption of titanium in the aerospace field will increase accordingly. From a global perspective, the aviation industry plays a decisive role in the titanium market. Historically, the major cycles of the titanium industry are closely related to the temperature and temperature of the aviation industry.
The preparation method and processing process include billet preparation and plastic processing, welding, heat treatment and coating.
Continue Reading →There is such a "group" of metal elements, they are often accompanied by two in nature, can be described as "inseparable", and the physical and chemical characteristics of each pair is so surprisingly similar, that when they were found, people mistook the two symbiotic elements for one.
Continue Reading →Purity is one of the main performance indexes of target, because the purity of target has a great influence on the performance of the film. However, in practical applications, the purity requirements of target materials are not the same. For example, with the rapid development of the microelectronics industry, the size of silicon wafer has been developed from 6 ", 8 "to 12", and the wiring width has been reduced from 0.5um to 0.25um,0.18um and even 0.13um. In the past, the target purity of 99.995% can meet the technological requirements of 0.35umic, while the target purity of 0.18um line is 99.999% or even 99.9999%.
Continue Reading →Niob-ti alloy is currently the most pressure-resistant superconductor. Recently, the superconductivity of niob-ti alloy superconductor under ultra-high pressure has been systematically studied by the state key laboratory of superconductivity, institute of physics, Chinese academy of sciences/national research center for condensed matter physics, Beijing and Princeton university.
Continue Reading →Shape memory alloys (such as Nitinol) exhibit hyperelastic effects. The term hyperelasticity is used to describe materials that can withstand large deformation without permanent deformation under the loading and unloading cycle. Under the loading and unloading cycle, and even up to 10-15% strain, Nitinol materials will show a lag reaction and undergo a steep -- gentle -- steep change during loading and unloading, but without permanent deformation. Nitinol material models can be used for solid and shell elements.
Continue Reading →Superconducting materials are materials with properties of zero resistance and repulsive magnetic field lines at a certain low temperature. Twenty-eight elements and thousands of alloys and compounds have been found to be superconductors. Superconducting materials can be divided into element materials, alloy materials, compound materials and superconducting ceramics according to their chemical composition.
Continue Reading →NbTi alloy is currently the most pressure-resistant superconductor. Recently, the superconductivity of niob-ti alloy superconductor under ultra-high pressure has been systematically studied by the state key laboratory of superconductivity, institute of physics, Chinese academy of sciences/national research center for condensed matter physics, Beijing and Princeton university.
Continue Reading →Palladium alloy tube application and separation of impurities. Palladium alloy hydrogen purification principle is, under the 300-500 ℃, the stay on one side of the purification of hydrogen in palladium tube, adsorb hydrogen on the palladium tube wall, as a result of the palladium 4 d shell lack of two electrons, it can generate unstable with hydrogen bonds (palladium and the reaction is reversible hydrogen), under the action of palladium,
Continue Reading →Pure titanium is a silver-white metal that has many excellent functions. At 4.54g/cm3, titanium is 43 per cent lighter than steel and a bit heavier than the prestigious light metal magnesium. Its mechanical strength is similar to that of steel, twice as strong as aluminum and five times as strong as magnesium.
Continue Reading →Due to its excellent physical properties and resistance to infection, titanium alloy is the primary choice for the manufacture of orthopedic devices such as knee/hip implants. So far, researchers have used selective laser melting (SLM) techniques and titanium-aluminum powders to 3D print biological prototypes. SLM technology typically USES high power lasers to build 3D objects layer by layer from computer design models. But aluminium has a long history of adverse effects on the nerves, leading scientists to hope to find other materials to replace it.
Continue Reading →Zirconium alloy cladding has been successfully applied to light water reactor (LWR), showing good irradiation-resistance and corrosion resistance. However, a major problem with zirconium reactor applications is that they react strongly with water vapor at high temperatures, releasing large amounts of hydrogen and heat at temperatures greater than 1200 ° c. After the fukushima nuclear accident in Japan, the safety of nuclear power has been put in front of all nuclear workers again. How to further improve the safety and reliability of nuclear fuel elements in light water reactors under accident conditions has become an urgent problem to be solved.
Continue Reading →Niobium mineral deposits are primarily ferroniobium (manganese) ore, etc., and the extraction of niobium mainly includes the process of differentiation of concentrate, separation of tantalum niobium, preparation of compounds and metals, and essence.
Continue Reading →Niobium titanium superconducting alloy is one of the most widely used superconducting materials.
Nb-ti alloy with mass ratio of nearly l: 1 has good superconducting electrical properties, and its superconducting critical transition temperature Tc=9. 5K, which can operate at the temperature of liquid helium, under the magnetic field of 5T(50,000 Gs), the transmission current density Jc≥105A/cm2(4). 2 k); The maximum application field can reach 10T(100,000gs)(4. 2 k).
Characteristics of lanthanide tungsten electrode.
Lanthanated tungsten electrode is European countries introduced in the eighty s hope replace thorium tungsten products improved varieties, excellent welding performance of lanthanum tungsten once pushed as far as the international welding industry, especially in European welding academic demand, also for this reason, lanthanum tungsten volume after the thorium-tungsten electrode, however lanthanated tungsten in the domestic market awareness is not high. Lanthanum tungsten electrode is characterized by its conductivity closest to 2% thorium tungsten electrode, durable current is high and burn rate is minimal.
Titanium alloys can be classified into heat-resistant alloys, high-strength alloys, corrosion resistant alloys (ti-mo, ti-pd alloys, etc.), low-temperature alloys and special functional alloys (ti-fe hydrogen storage materials and ti-ni memory alloys).
Continue Reading →Magnetron sputtering is a new physical vapor deposition method, which has many advantages over the earlier evaporation deposition method. As a mature technique, magnetron sputtering has been applied in many fields.
Continue Reading →Niobium alloy formed by adding tantalum and tungsten elements to niobium base.
Niobium tantalum tungsten alloy has high tensile strength and creep deformation resistance at high temperature.
Purchase and acceptance of tantalum raw materials. After the purchase of tantalum raw materials, the tantalum raw materials shall be checked and accepted and put into storage in a timely manner. The operation department shall be responsible for the registration of the tantalum raw materials number, the handling of warehousing procedures, and the collection and management of trace materials, transport documents and customs declaration documents of the mineral source supply chain.
Continue Reading →Flame reaction is strictly platinum wire, inert metal, not easy to react with other substances, and high melting point. The reaction in which certain metals or their compounds are chemically burned in a colorless flame to give the characteristic color of the flame is called flame reaction. Flame reaction is a very old qualitative analysis method.
Continue Reading →A - TIG welding (Activating flux TIG welding) is active (welding) agent tungsten argon arc welding, it is primarily in the welding workpieces surface coating of A very thin layer of active agent, in the TIG welding, its biggest effect is the basic characteristics of TIG welding, can significantly improve the penetration and reduce the generation of porosity.
Continue Reading →Niobium zirconium alloy refers to the alloy composed by adding zirconium to the metal niobium. The main niobium zirconium alloys are nb-1zr alloys. Zirconium added in niobium can improve the strength of the alloy without affecting the plasticity and processing properties of the alloy. Zirconium can also improve the oxidation resistance and corrosion resistance of the alloy. Nb-1zr alloy is the most widely used niobium alloy, is a low-strength niobium alloy, good processing and welding performance, mainly used in aerospace, nuclear reactors, new type of electric light source sodium lamp and other application fields.
Continue Reading →From the mid-1950s to the early 1960s, niobium alloys with excellent oxidation resistance and high strength were mainly developed. Later, niobium alloys with good processing and welding properties were developed, and the research of niobium alloy antioxidation protective coating was strengthened. China began the niobium production process research in 1958, and began the industrial production of niobium in 1963.
Continue Reading →As the raw material of C103 alloy, niobium - tantalum - tungsten alloy bar has strict requirements on Ta, W and gas impurities C and O. The process of producing nb-ta-w alloy bar by powder metallurgy is studied in this paper. The method of uniform distribution of Ta and W was found out, and a reasonable process scheme was put forward.
Continue Reading →Niob-ti alloy superconductor has been widely used in thousands of known superconductors because of its excellent comprehensive properties. Niobium titanium alloy is a typical binary alloy composed of transition group elements. In the previous study on the high-entropy alloy superconductor (TaNb)0.67(HfZrTi)0.33 composed of multi-element transition group metal elements, it was found that the alloy showed unusually stable superconductivity under ultra-high pressure (pressure over one million atmospheres is ultra-high pressure, and 1 million atmospheres =100 GPa). Since niobium and titanium are the main components of this high entropy alloy, the research on the superconductivity of niobium and titanium alloy under ultra-high pressure can deepen the understanding of the microscopic mechanism of superconductivity of high entropy alloy.
Continue Reading →Thermal barrier coating is a layer of ceramic coating, which is deposited on the surface of high-temperature resistant metal or super alloy. Thermal barrier coating plays a heat insulation effect on the substrate material and reduces the temperature of the substrate, so the device made can operate at high temperature.
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