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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