Molybdenum powder prepared by traditional technology is often used to be raw material of molybdenum sintered products, the common preparation methods include reduction method, fluidized bed reduction method, hydroxyl thermal decomposition method etc.

The cost of traditional high density tungsten alloy is high, as 3C industry begins to use small-size high density W-alloy part as counterweight material, higher requirement is put forward for the forming technology of high density W-alloy. Therefore metal powder injection molding (MIM) technology appears, it is a new near net forming technology for part, which combines plastic injection molding technology with powder metallurgy technology, it can effectively promote the wide use of high density W-alloy materials in 3C and other high-tech industries.

Large-size tungsten-based heavy alloy has a series of advantages including high density, low coefficient of thermal expansion, good oxidation resistance and corrosion resistance, etc. In fields of aerospace, electronic information and so on, large-size and high performance tungsten-based heavy alloy is in urgent need. Find the rule of internal structure of large-size tungsten based high specific gravity alloy during liquid phase sintering process to obtain high homogeneity, high performance and parts of large-size tungsten based high specific gravity alloy.

High density tungsten alloy has excellent mechanical property, anti burning property and absorption ability to radiation. Therefore, it is used in explosive parts such as armor piercing bomb. Normally, the part should keep well after impacted by the front end explosion, but in the test, the component breaks without external force.