Heat treatment of zirconium niobium alloy

Firmetal, 2018-12-13 11:18:00 PM

Zirconium niobium alloy is heat treatment strengthened alloy, quenching - cold processing aging treatment can also improve the corrosion resistance.

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Niobium application

Firmetal, 2018-12-12 09:21:00 PM

Tantalum and niobium market recovery application growth in recent years, with the demand for computers, digital cameras, mobile phones, vehicle-mounted electronic systems, the demand for tantalum is gradually out of the trough. Tantalum concentrate prices have also returned to normal. In recent years, the world's total demand for tantalum is about 2,000 tons, while the demand for niobium is more than 20,000 tons. The main USES of tantalum are tantalum powder for capacitors and tantalum wire, which account for more than half of the total consumption. Niobium is mainly used as an additive in iron and steel, which accounts for nearly 90% of the total consumption. In 2000, the consumption of tantalum peaked. The total consumption of tantalum reached a record 2,235 tons. Niobium demand has been flat. Characteristics: tantalum deposit size is small, ore grade is low, Mosaic size is fine and dispersed, polymetallic companion, resulting in difficult mining, difficult separation, difficult selection, low recovery rate; The occurrence state is poor and there are few mines with large-scale open-pit mining.

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A method for manufacturing a specific terminal Angle in a titanium tungsten layer

Firmetal, 2018-12-11 09:25:00 PM

Some components in an integrated circuit have components made up of layers, including molybdenum (Mo), titanium tungsten (TiW), and aluminum nitride (AlN). One such device is a volume sound wave (BAW) device with a stack of layers of molybdenum, titanium tungsten and aluminum nitride. Aluminum nitride forms an acoustic resonator in which the molybdenum layer is used as an electrical contact or electrode on the acoustic resonator. Titanium tungsten layers and oxides are formed on each side of the acoustic resonator to form Bragg mirrors.

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High temperature alloy

Firmetal, 2018-12-10 09:37:00 PM

High temperature alloy refers to as the base, iron, nickel and cobalt in the high temperature of 600 ℃ above and must stress under the action of the long-term work of the kind of metal material, has excellent high temperature strength, good resistance to oxidation and thermal corrosion resistance, good fatigue properties, fracture toughness and other comprehensive performance, also known as "super alloy, mainly used in aerospace field and energy field.

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Hafnium alloy

Firmetal, 2018-11-29 09:20:00 PM

Modern aircraft such as spacecraft, artificial satellites and rockets, missiles, supersonic aircraft is towards high speed, high altitude, big thrust, long distance, high accuracy and safety in the direction of the development of zirconium and hafnium compounds (and) for some excellent performance, in addition to small nuclear structure and coating materials, also used in the Apollo spacecraft on the relevant parts. Hafnium can also be used as a small volume and high energy rocket propellant.

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Titanium niobium uranium

Firmetal, 2018-11-28 09:24:00 PM

Uranobite, also known as beta, contains 26.6% uranium trioxide, 34.80% niobium pentoxide and 18.30% titanium dioxide. Isometric crystal system, a= 10.32a, symmetrical m3m. Crystal octahedron, diamond dodecahedron. Color brown to black, stripe brown, hardness 4 ~ 5, relative density 3.75 ~ 4.82. Occurs in granite pegmatite. The varieties of beta include: rare earth beta, tantalum beta, lead beta aluminum beta, thorium beta and lead beta;

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Use of tantalum alloy tubes

Firmetal, 2018-11-27 09:14:00 PM

Tantalum and its alloy blank can be produced by powder metallurgy process or smelting process. Powder metallurgy technology is mainly used to produce small tantalum products and blank for processing. Powder tantalum raw materials obtained by thermal reduction or electrolysis are pressed and shaped for vacuum sintering. Sintering process depends on the requirements of product use. A sintering (1600 ~ 2200 ℃) used in the production of smelting with electrodes and the porous anode. Secondary sintering is used to produce blank for forging, rolling and drawing. Forging or rolling is often carried out between sintering and sintering, and the processing rate is about 50%. Secondary sintering temperature is 2000 ~ 2700 ℃.

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Titanium automobile industry

Firmetal, 2018-11-20 09:19:00 PM

Reducing fuel consumption and harmful waste (CO2, NOX, etc.) emissions have become one of the main driving forces and directions of technological progress in the automobile industry. Research shows that lightweight is an effective measure to save fuel and reduce pollution. For every 10% reduction in vehicle quality, fuel consumption can be reduced by 8% to 10%, and exhaust emissions can be reduced by 10%. In the aspect of driving, the acceleration performance of the vehicle after lightening is improved, and the vehicle control stability, noise and vibration are also improved. From the perspective of collision safety, after the vehicle is lightweight, the inertia is small and the braking distance is reduced.

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Hafnium USES and applications

Firmetal, 2018-11-19 09:29:00 PM

Since hafnium is easy to emit electrons, it can be used as a cathode of X ray tube. Furthermore, alloys of hafnium and tungsten or molybdenum are also used as electrodes for high voltage discharge tubes. According to a 2012 report, a research team led by Andrew flovitt of the department of engineering at the university of Cambridge in the United Kingdom has developed a new hafnium oxide with higher dielectric constant, which is expected to be used to make the next generation of more miniature electronic equipment, photovoltaic manufacturing equipment and more efficient photovoltaic cells.

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Titanium niobium superconducting alloy

Firmetal, 2018-11-16 09:13:00 PM

Superconducting materials and superconducting technologies have broad application prospects. The meissner effect in the phenomenon of superconductivity allows people to make superconducting trains and ships using this principle, as these vehicles will operate in a state of suspension without friction, which will greatly improve their speed and quietness and effectively reduce mechanical wear. Superconducting suspension can be used to manufacture wear - free bearings, which can increase the speed of bearings to more than 100,000 revolutions per minute. Superconducting trains, which successfully tested the feasibility of carrying passengers in the 1970s, began trial operations in Japan in 1987, but often failed, possibly due to bumps caused by high-speed travel. The superconducting ship was launched for trial on January 27, 1992 and has not yet entered the practical stage. Using superconducting materials to make transportation tools still has some technical obstacles, but it is bound to cause a wave of transportation vehicle revolution.

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Tantalum heat exchanger

Firmetal, 2018-11-15 09:15:00 PM

Heat exchanger (also known as heat exchanger or heat exchanger) is a device used to transfer heat from hot fluid to cold fluid to meet specified process requirements. It is an industrial application of convection heat transfer and heat transfer. Heat exchangers can be classified in different ways. According to its operation process can be divided into three categories: interwall type, mixed type, reheat type (or reheat type); According to its surface compact degree can be divided into compact type and non-compact type.

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Nb - based elastic alloy

Firmetal, 2018-11-14 09:33:00 PM

Nb - based elastomers are nb - based alloys used as elastomers and components. Nb - based elastic alloy has high temperature resistance, corrosion resistance, high strength, good sensitivity, quick measurement, high precision, no magnetism, low temperature drift and wide frequency response range.

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Medical titanium and titanium alloy implants

Firmetal, 2018-11-12 09:25:00 PM

As a surgical implant material, titanium and its alloy have many advantages, such as small density, high strength, good toughness, good biocompatibility, non-toxic, low elastic modulus, good corrosion resistance and low X-ray absorptivity, which play an increasingly important role in medical metal materials.

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Preparation of niobium - tungsten alloy

Firmetal, 2018-11-09 09:13:00 PM

Nb - w alloys are usually prepared by powder metallurgy and smelting. The powder metallurgy method is to prepare the billet by mixing, pressing and sintering niobium, tungsten and other element powder into prealloy bars, and then use two or more vacuum electron beam smelting or vacuum arc smelting or the two smelting methods. The aim of electron beam smelting is to remove impurities (such as interstitial elements, low melting point metals and non-metallic impurities) in the prealloy bars, to control the alloy composition and to prepare a certain size billet. The aim of vacuum arc melting is to prepare the billet with more uniform composition, smaller grain size and larger diameter. Ingot billet machining after squeezing breakdown and forging temperature above 1200 ℃, and then under 500 ℃ temperature rolling, drawing, to the preparation of bar, sheet, strip, wire, etc.

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Application of platinum rhodium thermocouple

Firmetal, 2018-11-08 09:16:00 PM

Also called high temperature thermocouple, precious metals platinum rhodium have single platinum rhodium (10 - platinum rhodium platinum rhodium) and double platinum rhodium (30 - platinum rhodium platinum rhodium 6), as temperature measurement sensor, usually with temperature transmitter, controller and display instrument, such as process control system, to directly measure or control in the production of a variety of fluid over a range of 0-1800 ℃, steam and gas medium and solid surface temperature.

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A technical scheme for the smelting system of zirconium niobium lead alloy

Firmetal, 2018-11-07 09:21:00 PM

The patented technology of the utility model discloses a smelting system of zirconium niobium lead alloy, which comprises a successively connected zirconium niobium lead electrode block processing device, a vacuum filled argon welding box and a vacuum self-consuming electric arc furnace. The preparation system of the patented technology of the utility model realizes the assembly-line production of zirconium niobium lead alloy and greatly improves the production efficiency. The patented technology of the utility model adds lead on the basis of conventional zirconium and niobium alloys……

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3D printing of tantalum metal into medical implants

Firmetal, 2018-11-06 09:15:00 PM

Precision medical "was included in the national key research and development, belongs to the category of" much starker choices-and graver consequences-in planning ", our country medical human bone implantation of not less than 3 million cases each year, tens of thousands of each price to more than 10, early application of the material is stainless steel, nickel chromium alloy, nickel titanium alloy, 2, 3 years recently popular TC4 titanium alloy, the material containing nickel, chromium, or harmful elements such as aluminum, vanadium, and because of its elastic modulus is beyond human bones too much, materials with low affinity, Medical experts and the market are in urgent need of new non-toxic and harmless materials with good human affinity to improve the current situation.

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Platinum identification

Firmetal, 2018-11-05 09:23:00 PM

Platinum has a proportion of 21. 45g/cm3, much more than gold and silver. Hardness is 4. 3. Melting point is 1769.c. It is resistant to high temperature and is not easy to be oxidized in air. Not only can it be rolled into a very thin foil of platinum, but if one gram of platinum is pulled into a thin line, it can extend as long as 2,000 meters. These properties make platinum very useful in industry.

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Tantalum body implant

Firmetal, 2018-11-02 09:17:00 PM

The biomedical composites are mainly used to replace the damaged or missing human tissue structure, so as to repair the shape and performance of tissue. The problem of biocompatibility needs to be considered during the implantation of this material, among which the mechanical compatibility requires that the mechanical properties of the implanted material should be adapted or matched with human tissue. Too low strength leads to material fracture and instability, and too high will cause damage to surrounding tissues, making the material implantation site difficult to heal for a long time, namely the "stress shielding" effect.

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Titanium and titanium alloy as implantation repair

Firmetal, 2018-11-01 09:21:00 PM

With the rapid development of national economy, the demand of medical titanium alloy is increasing with its excellent performance. As a metal material with excellent biological properties, titanium and its alloy have a good application prospect in the field of medicine. However, compared with developed countries, there are still some gaps in the development and application of titanium alloy in China. For example, high elastic modulus, poor surface activity, poor wear resistance and corrosion resistance of titanium alloy will directly affect the biocompatibility of materials. Therefore, in order to develop new titanium alloys with better comprehensive performance, China should strengthen the research and development of materials, pay attention to innovation, and develop bio-medical titanium alloys with low elastic modulus, high wear resistance, corrosion resistance and excellent biocompatibility.

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Niobium cobalt antimony

Firmetal, 2018-10-31 15:30:00 PM

The niobium cobalt antimony alloy (NbCoSb) was once an unidentified alloy material that "" looks" "metal, and" "personality" "is more like a semiconductor. Because it is expected to be a new generation of high-temperature thermoelectric materials, many scientists have tried to synthesize pure 1:1:1 nb, cobalt and antimony, but no one has succeeded yet. What's going on here?

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Zirconium alloy

Firmetal, 2018-10-30 09:16:00 PM

A nonferrous alloy formed by adding other elements to a zirconium matrix. The main alloy elements are tin, niobium, iron and so on. Zirconium alloy in 300 ~ 400 ℃ high temperature and high pressure in the water and steam have good corrosion resistance, moderate mechanical properties, low thermal neutron absorption cross section of atoms, has good compatibility to the nuclear fuel, more material used for water-cooled nuclear reactor core structure. In addition, zirconium has excellent corrosion resistance to a variety of acids, bases and salts, and has a strong affinity with gases such as oxygen and nitrogen. Therefore, zirconium alloy is also used in the manufacturing of corrosion-resistant parts and pharmaceutical mechanical parts. It is widely used as a non-evapotranspiration disinfectant in the electric vacuum and light bulb industries.

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Why are titanium alloy products so expensive

Firmetal, 2018-10-29 09:22:00 PM

Titanium sponge had to be remelted in an electric furnace to become a viable ingot, and titanium was active at high temperatures and difficult to process. Pure titanium is very soft and generally not suitable for use as a titanium product, so other elements need to be reintroduced. For example, the titanium 64 commonly used in the aviation industry should be mixed with many other elements to improve the metal performance. (I don't know what to add.) titanium is hard to machine. It's not hard, but it's sticky. I used a file to file the ti-64 handle, and the pattern of the file was quickly filled with slag. It is said that because the speed is too low titanium can not be peeled at all, and if the speed is too high……

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Spherical tantalum niobium and tantalum niobium alloy powders and their preparation methods

Firmetal, 2018-10-26 09:07:00 PM

Tantalum powder of existing technology has complex shape, stone block structure, sheet structure and spongy structure, rough surface; Moreover, the poor sphericity and particle size distribution of tantalum powder lead to poor fluidity and formability of tantalum powder particles, which limits the use of these powders, especially their use in the manufacture of printed products. In particular, the existing process of tantalum powder also has the defect of low density, which affects the mechanical properties of the printed parts……

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Metal working allowance

Firmetal, 2018-10-25 09:12:00 PM

In the process of turning from blank to finished product, the total thickness of the metal layer excised on a machining surface is called the total machining allowance of the surface. The thickness of the metal layer removed by each process is called the inter-process machining allowance. For rotating surfaces such as outer circle and hole, machining allowance is considered from diameter, so it is called symmetrical allowance (bilateral allowance), that is, the actual thickness of metal layer excised is half of machining allowance on diameter. The machining allowance of plane is the one side allowance, which is equal to the actual thickness of the removed metal layer……

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Cast titanium alloy

Firmetal, 2018-10-24 09:09:00 PM

The most widely used cast titanium alloy is Ti-6Al-4V alloy. Its casting property is best, organization, performance, stability, under 350 ℃ has good strength and fracture toughness. It can replace stainless steel for aviation and chemical industry.

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Tantalum screw

Firmetal, 2018-10-23 09:22:00 PM

Screw is a common fastener, widely used in machinery, electrical equipment and buildings. General material is a metal or plastic, cylindrical, the surface engraved with concavoconvex groove is called threads.

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Application of lanthanum mineral salts

Firmetal, 2018-10-19 09:18:00 PM

1. Application of lanthanum bromide

So far, scintillation crystals have been widely used in many fields, such as nuclear physics, high energy physics, astrophysics, geological exploration, petroleum logging, nuclear medical imaging, and industrial nondestructive examination. In general, the main indicators to measure the scintillation crystals are density, optical yield, attenuation time, energy resolution and other aspects. Different fields have different requirements on the performance of scintillation crystals, and a great variety of scintillator materials are generated accordingly.

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New material of niobium tungsten oxide

Firmetal, 2018-10-18 09:05:00 PM

A recently discovered set of materials could enable rapid battery charging, improve the likelihood of a smartphone fully charging in minutes, and accelerate adoption of major clean technologies such as electric cars and solar power.

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Platinum rhodium thermocouple

Firmetal, 2018-10-17 09:30:00 PM

Platinum rhodium thermocouple is also called high temperature thermocouple, precious metals platinum rhodium have single platinum rhodium (10 - platinum rhodium platinum rhodium) and double platinum rhodium (30 - platinum rhodium platinum rhodium 6), as temperature measurement sensor, usually with temperature transmitter, controller and display instrument, such as process control system, to directly measure or control in the production of a variety of fluid over a range of 0-1700 ℃, steam and gas medium and solid surface temperature.

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Five types of rare small metals are of great concern in African mines

Firmetal, 2018-10-16 09:15:00 PM

Rising commodity prices may have renewed the market's enthusiasm for Africa's resources, but with the mining industry in Cape Town, coal and iron ore markets are unlikely to be the focus.

The boom in electric vehicles and the changing industrial demands that have accompanied them have made previously thin metals (from cobalt lithium to praseodymium rare earths) a new hot spot for African mining.

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Tantalum high temperature resistant

Firmetal, 2018-10-15 09:11:00 PM

Pt-Rh thermocouple has the highest accuracy, best stability, wide temperature range, long service life and high temperature limit in thermocouple series. Suitable for oxidizing and inert atmospheres or for short-term use in a vacuum, but not for reducing atmospheres or atmospheres containing metallic or non-metallic vapors. B type thermocouple is an obvious advantage don't need a compensation for the compensation conductor, because in the range of 0 ~ 50 ℃ and internal potential less than 3 mu V.

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Tantalum high temperature resistant

Firmetal, 2018-10-12 09:16:00 PM

It is mainly divided into metal and non-metal compound and non-metal intercompound. The former include refractory metals such as tungsten, molybdenum, tantalum, niobium, vanadium, chromium, titanium and zirconium, as well as rare earth metals such as boride, carbide, nitride, silicified, phosphide and sulfide. The latter such as boron carbide, silicon carbide, boron nitride, silicon nitride, boron phosphide, silicon phosphide etc.

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Atmospheric synthesis and superconductivity of niobium superconductor

Firmetal, 2018-10-11 09:03:00 PM

Superconductivity is a macroscopic quantum phenomenon. Over the past century of research on superconductivity, new superconducting material systems have emerged one after another, and the strange behaviors of superconductivity have been discovered constantly. At the same time, superconducting materials have important application value in energy, medical treatment, communication and other fields. In recent years, with the discovery of high temperature superconductivity of single-layer fese-srtio3 system, interface superconductivity and superconductor-base interaction become a new hot spot in the study of superconductivity. However, the preparation of single-layer superconductors requires extremely stringent conditions, including an ultra-high vacuum environment of 10-10 Torr, expensive molecular beam epitaxy (MBE) equipment, and specific monocrystalline substrates.

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Iridium alloy

Firmetal, 2018-10-10 09:19:00 PM

An alloy whose substrate is iridium containing other elements. It is a kind of precious metal material with special purpose. Iridium alloy has high melting point, high chemical stability and good thermal strength. But most iridium alloys are brittle and difficult to process, limiting their use. Common iridium alloys include ir-40rh, ir-70rh, ir-20ru and ir-10ru. Common iridium alloys include ir-40rh, ir-70rh, ir-20ru and ir-10ru. Iridium alloy is mainly used as high temperature oxidation resistance thermocouple and electrical contact materials, the use of Ir - Rh in thermocouple temperature can be as high as above 2000 ℃. Iridium alloy can be used to improve the processing performance of iridium with a small amount of tungsten or hafnium, and the addition of trace amounts of aluminum, iron, thorium and so on to improve the impact toughness. As a result, iridium alloy has high melting point and high temperature strength, good thermal shock resistance, and is compatible with graphite and PuO2 at high temperature. It is selected as the nuclear fuel container material for aerospace and medical applications.

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Platinum-iridium alloy Process

Firmetal, 2018-10-09 09:19:00 PM

In the forging process, the induction furnace argon is used for shielding smelting, the ingot must be heated and then processed for cold processing, and the fine wire of 0.008mmP-tIr25 alloy is drawn. It is difficult to smelt and process 60% iridium alloy by electric arc furnace.

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Basic methods for preparing tantalum materials

Firmetal, 2018-10-08 09:30:00 PM

Titanium alloy infantry fighting vehicles, titanium alloy is A synonym for high-end and expensive metal in people's impression, especially military fans know that the former Soviet union built titanium alloy submarine a-class attack nuclear submarine, which is more valuable than gold. How can our army equip such expensive equipment?

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Basic methods for preparing tantalum materials

Firmetal, 2018-09-28 09:20:00 PM

The main process of tantalum smelting is to decompose concentrate, purify and separate tantalum and niobium to make the pure compounds of tantalum and niobium, and finally make the metal.

Hydrofluoric acid decomposition, sodium hydroxide melting and chlorination can be used to decompose the ore. The separation of tantalum and niobium can be achieved by solvent extraction (common extractant is methyl isobutyl copper (MIBK), tributyl phosphate (TBP), sec-octanol and acetamide), step crystallization and ion exchange.

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Zirconium sponge is used in which industries

Firmetal, 2018-09-27 09:15:00 PM

Metallic zirconium, also known as sponge zirconium, is a silver-gray metal with a steel-like appearance and luster. Melting point 1852 secondary point, secondary point, boiling point 4377 density 6.49. Zirconium absorbs hydrogen, nitrogen and oxygen easily. Zirconium's affinity for oxygen is very strong, zirconium oxygen dissolved in 1000 ℃ can make its volume increased significantly. Zirconium is relatively stable in air. The powdered zirconium is easy to burn, and the fine zirconium filament can be ignited by a match. At high temperature, it can be directly combined with dissolved oxygen, nitrogen and hydrogen.

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Tantalum capacitors and niobium oxide capacitors can improve the performance of automotive systems

Firmetal, 2018-09-26 09:23:00 PM

Driven by user demand for more comfort, safety and functions, the automobile industry has become a rapidly developing market area. Various electronic systems are equipped into modern cars, many of which directly affect the reliability of the car and the safety of the passengers. Conversely, this means that the electronic components used in critical electronic systems must be very reliable. Capacitors are widely used in many automotive electronic systems, and their quality, stability and reliability must be strictly controlled by automakers. Tantalum capacitors and niobium oxide capacitors can improve the performance of automotive systems.

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Anti - oxidation coating for niobium - tungsten alloy

Firmetal, 2018-09-25 09:33:00 PM

As a refractory metal, niobium has been used in space field. Niobium tungsten alloy has high strength at high temperature and good plasticity at room temperature. It can be made into various processing materials and parts by conventional forming processing technology, which can be used for space shuttle skin, nuclear reactor engineering, jet engine parts, space power generation system thermal radiation screen and catheter, etc. China's chang 'e-3 related facilities part of the use of niobium tungsten alloy.

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Tantalum disulfide film is higher in temperature

Firmetal, 2018-09-21 13:58:00 PM

In order to better explain the mechanism of superconductivity enhancement of heavy stacking tantalum disulfide thin films, the research team used density functional theory to simulate and analyze the electronic structure of the two materials. The results show that the electron delocalization at the interface is enhanced due to the distortion between layers, which leads to the increase of electron density near Fermi surface and the enhancement of superconductivity. Tantalum disulfide film is higher in temperature.

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Submarines like to use titanium alloy as a pressure-resistant shell

Firmetal, 2018-09-10 09:15:00 PM

In the early days of the struggle for supremacy between the United States and the Soviet union, the Soviet union developed a large number of submarines, especially some later nuclear submarines, in order to cope with the maritime threat posed by the aircraft carrier battle group of the United States. The operational performance was excellent, which greatly enhanced the strategic deterrence capability of the Soviet union underwater. And one of the characteristics of Soviet nuclear submarines was that they liked to use titanium alloy to make pressure-resistant shells. So why? What's the advantage of titanium alloy? In fact, the reason is very simple, since the submarine's compression shell, of course, is to resist pressure.

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High nickel alloy

Firmetal, 2018-09-07 09:13:00 PM

Nickel base superalloy. The main alloy elements are chromium, tungsten, molybdenum, cobalt, aluminum, titanium, boron, zirconium, etc. Among them, chromium ACTS as antioxidant and corrosion resistance, while other elements act as reinforcement. In 650 ~ 1000 ℃ high temperature had a higher strength and oxidation resistance, gas corrosion resistance, is the most widely used in high temperature alloy, high temperature strength of the highest kind of alloy. It is used to manufacture high-temperature components on aero engine blades and rocket engines, nuclear reactors and energy conversion equipment.

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Zirconium Sponge

Firmetal, 2018-09-06 09:23:00 PM

Sponge zirconium, also known as metallic zirconium, is a silver-gray metal with a steel-like appearance and luster, used in aerospace, military industry, nuclear reaction, etc.

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Niobium correlation alloy

Firmetal, 2018-09-05 09:13:00 PM

Niobium plays a role of solid solution strengthening and carbide precipitation strengthening in high temperature alloy to improve yield strength and surface stability of high temperature alloy. The weight of niobium is one of the lighter metals in refractory metals and one of the factors of high temperature alloy. Niobium nickel alloy, as an additive of nickel base superalloy, is mainly used to produce 718 alloy. Niobium can be added into permanent magnetic alloy to improve its coercivity.

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Tantalum metal elements mainly exist in tantalite

Firmetal, 2018-09-04 09:18:00 PM

Tantalum alloy based on tantalum adds other elements to the alloy. Tantalum anode oxide film is very stable, corrosion resistant, dielectric properties excellent, suitable for making electrolytic capacitor. Tantalum is highly resistant to chemical corrosion. Except for hydrogen fluoride, sulfur trioxide, hydrofluoric acid, hot concentrated sulfuric acid and alkali, tantalum can resist the corrosion of all organic and inorganic acids. Therefore, it can be used as corrosion resistant materials for chemical industry and medicine. Tantalum carbide is an important additive in the manufacture of cemented carbide. Tantalum is also used in some tubes. In 1958, ta-10w alloy was put into production.

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Extraction of rhenium

Firmetal, 2018-09-03 09:31:00 PM

The raw materials of rhenium mainly come from the by-products of molybdenum smelting process. Generally, rhenium content in molybdenum concentrate is between 0.001% and 0.031%. But the rhenium content of molybdenum concentrate from porphyry copper mine can reach 0.16%. In addition, some copper, platinum metal ore, niobium mine, zinc blende smelting dust, slag, waste liquid processing low-grade molybdenum ore and rhenium waste materials such as platinum rhenium catalyst and rhenium waste alloy can also be used as raw materials for rhenium production.

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Niobium tungsten oxide

Firmetal, 2018-08-31 09:20:00 PM

Niobium tungsten oxide can be used as the positive electrode of lithium ion battery, which makes the lithium ion battery have higher power and faster charging speed. The new batteries could be adapted to more new devices, such as electric vehicles and grid-level storage for renewable energy. The battery has three parts: the anode, the cathode and the electrolyte connecting the poles. When a lithium-ion battery discharges, the ions move from the cathode to the anode, and when it is charged, from the anode to the cathode. The faster the lithium ions in the battery move, the faster the battery charges, and the higher the power in the process.

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The development and production of niobium mineral resources in the world

Firmetal, 2018-08-30 09:15:00 PM

Niobium is an important industrial raw material with good corrosion resistance, fatigue resistance, deformation resistance and thermoelectric conductivity. It is widely used in steel industry, aerospace industry, military industry and nuclear industry. Eighty percent of the region's iron ore products are used in the iron and steel industry, and over 90 percent of the industrial superconducting materials are made of niobium and tantalum alloy conductors, which is an important strategic resource. This paper introduces the development history, production and consumption situation and market characteristics of global niobium mine application, summarizes and analyzes the current investment situation of world resources, and emphatically introduces the main global niobium mineral resources in the exploration and development stage.

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Application of zirconium and hafnium alloys (and compounds) in aircraft

Firmetal, 2018-08-29 09:27:00 PM

Modern aircraft such as spacecraft, artificial satellites and rockets, missiles, supersonic aircraft is towards high speed, high altitude, big thrust, long distance, high accuracy and safety in the direction of the development of zirconium and hafnium compounds (and) for some excellent performance, in addition to small nuclear structure and coating materials, also used in the Apollo spacecraft on the relevant parts. Hafnium can also be used as a small and energetic propellant for rockets.

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Tantalum is strongly resistant to corrosion

Firmetal, 2018-08-28 09:11:00 PM

Tantalum excellent chemical properties, high corrosion resistance. In both cold and hot conditions, the hydrochloric acid, nitric acid and aqua regia "reaction. But tantalum corroded in hot concentrated sulfuric acid, and under 150 ℃, tantalum is not concentrated sulfuric acid corrosion, only in the higher temperature will have a reaction, 1 year, in the 175 degrees of sulfuric acid corrosion thickness is 0.0004 mm, the tantalum in 200 ℃ of sulfuric acid soaking for one year, the surface damage of only 0.006 mm. At 250 degrees, the corrosion rate increased, to corrode the thickness of 0.116 mm a year, at 300 degrees, the corrosion Speed is more faster, soak 1 year, the surface corrosion of 1.368 mm. In fuming sulfuric acid corrosion of SO3 (including 15%) than in the sulfuric acid is more serious, in the 130 - degree of the solution for 1 year, the thickness of surface corrosion is 15.6 mm. Tantalum will also be phosphoric acid corrosion at high temperature, but the reaction occurred in 150 degrees of above commonly, in 85% of the 250 degrees of phosphoric acid, soak 1 year, surface corrosion of 20 mm, in addition, tantalum can quickly dissolved in hydrofluoric acid and mixed acid of nitric acid, can be dissolved in hydrofluoric acid. But more fear of alkali tantalum, 40% in 110 - degree concentration of caustic soda solution , tantalum can be quickly dissolved, in the same concentration of potassium hydroxide solution, as long as 100 degrees can be quickly dissolved. In addition to the above, the general inorganic salt corrosion under 150 degrees generally cannot tantalum. Experiments show that tantalum at room temperature, the alkali solution, chlorine, bromine water, dilute sulphuric acid and many other drugs don't work, only under the effect of hydrofluoric acid and hot concentrated sulfuric acid. The situation in the metal is relatively rare.

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Niobium superconducting material

Firmetal, 2018-08-27 09:17:00 PM

A superconducting material is a material that exhibits properties of zero resistance and repulsion of magnetic field lines at low temperatures. 28 elements and thousands of alloys and compounds have been found to be superconductors. Niobium superconducting material.

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What is the role of zirconium in steel

Firmetal, 2018-08-24 09:33:00 PM

Zirconium is a rare metal. Its melting point (1852 + 2) ℃. It's a carbide forming element. Zirconium is a powerful deoxidization and denitrification element in the process of steelmaking. Zirconium can refine the austenite grains of steel, which can be combined with sulphur to form zirconium sulfide, thus preventing the hot brittleness of steel.

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Zirconium tube heat treatment

Firmetal, 2018-08-23 09:05:00 PM

It is conducted in a vacuum furnace with a vacuum degree of 1 x 10-2 ~ 1 x 10-3 Pa. A thick, full-sized workpiece with a protective coating or foreskin allows rapid heat treatment in the atmosphere. Zircaloy tube stick in the middle of the annealing temperature about 700 ℃, recrystallization began about 500 ℃, 600 ℃ when the grain coarsening obviously. Finished pipes of eliminating stress annealing at 450 ~ 450 ℃, finished pipes of recrystallization annealing at 530 ~ 530 ℃.

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Geological exploration of niobium and tantalum

Firmetal, 2018-08-22 09:08:00 PM

The exploration types of rare metallic endogenetic and weathering crust deposits are divided according to the size, morphology and mineralization uniformity of the ore body:

First Ⅰ types: massive ore bodies (> 800 m long and wide or deep > 500 m), simple form, a layer, layer, slab, huge lenticular and vein, mineralization evenly to more evenly. There are alkali feldspar granite deposit, weathering crust deposit, baiyun obo nb and rare earth deposit.

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Tantalum niobium market trend and forecast

Firmetal, 2018-08-21 09:19:00 PM

The tantalum niobium industry production is given priority to with wet smelting smelting and method, the production of major products are tantalum acid potassium fluoride, tantalum oxide, oxidation, niobium, tantalum, niobium tantalum carbide, metallurgical grade niobium capacitor grade tantalum powder and tantalum materials, oxide of high purity product is mainly used for tantalum lithium crystal, carbide used for cemented carbide, potassium is a raw material for tantalum powder, tantalum and tantalum powder tantalum is a high volume of capacitor materials. At present, tantalum niobium domestic annual demand is in 800~1000 tons tantalum oxide (100% tantalum), national production capacity is about 140~150 tons. Most of the remaining raw materials are imported from Africa.

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