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  The method is basically the same as the method for preparing tungsten powder. The hydrogen reduction method of molybdenum oxide is still the only method for producing molybdenum powder. The raw material for the production of  molybdenum powder  is generally ammonium paramolybdate 3(NH4)O·7MoO3·4H2O. Ammonium paramolybdate can be converted to MoO3 or MoO2 by calcination or hydrogen reduction. When using MoO3 as a raw material, first-stage, second-stage and third-stage method is used to produce molybdenum powder. Most plants adopt second-stage method. The first stage of the reduction temperature is performed at 450-650 ° C, and the second stage is performed at 900-950 ℃ . The factors that affect the quality of  molybdenum   powder are mainly the quality of raw materials, loading of the boat, reduction temperature, hydrogen flow and humidity, and the residence time of the material in the furnace. The purity of the raw material molybdenum dioxide determines the pu...

  With its unique properties,  porous titanium  can be widely used in the pharmaceutical industry, water treatment industry, food industry, bioengineering, chemical industry, petrochemical, metallurgical industry and gas purification. It is a new material with broad development prospects. Typical uses include: - In the infusion of the pharmaceutical industry, small injections, eye drops, decarbonization filtration in the concentration of oral liquids, and security filtration before terminal filtration in the lean distribution.                                                   - Removal of impurities in the production process of raw materials, decarbonization filtration and fine filtration of materials.     ...

  Tantalum  is the most corrosion resistant metal in common use today. Tantalum is not a noble metal, but it is comparable to them in terms of chemical resistance. When exposed to air, tantalum forms a very dense oxide layer  (Ta2O5)  which protects the base material from aggression. This oxide layer therefore makes tantalum corrosion-resistant. Tantalum 's corrosion resistance in sulfuric acid and hydrochloric acid is excellent. It is inert to almost all organic and inorganic chemicals. Its corrosion resistance is similar to that of glass, as both are not working for use in hydrofluoric acid and strong hot alkali surroundings . Tantalum will not be corroded by nitric acid in concentrations up to 98% and temperatures up to at least 100°C, it has verified itself to be totally inert in many corrosion applications. Some Some heat ex-changer establishments have been in consistent use for more than 40 years in multi-item look into situations without even a gasket chan...

  Processing performance Tantalum has good plasticity, low deformation resistance, and low process hardening. It can be processed into plates, strips, foils, pipes, rods and wires at room temperature. Tantalum can be formed into various devices & parts using traditional processes, equipment and tools such as metal spinning, deep drawing, bulging, bending, punching & cutting, stamping and drawing. Machinability The mechanical properties of fully recrystallized pure tantalum are similar to soft copper. In order to meet the tolerance and surface roughness requirements, the following machining method can be used: turning, milling, grinding and reaming, boring, tapping and others. Welding performance Tantalum has the best welding performance amount all refractory metals, and can be welded with carbon steel, stainless steel, nickel alloy, titanium alloy, etc. Electron beam welding and inert gas shielded tungsten arc welding can be used to weld tantalum chemical equipment compon...