Nanocrystalline WC-Co cemented carbide has been widely used in cutting tools, impact tools and wear resistant parts, because of its high hardness and high strength. Nano tungsten powder with uniform particle size and good dispersibility is the key technology for the preparation of high performance nanocrystalline WC-Co cemented carbide.

China is a main tungsten producing country with more than 20 thousand exportation of coarse tungsten products every year. Over 50% of tungsten consumption in the world is supplied by China. Domestic tungsten metal products output is around 1000~1200 tons. However, high quality tungsten material producing technique and intelligent property are extremely lack in China.

Tungsten carbide is black hexagonal crystal which has metallic luster, the hardness is closer to diamond. Since 1973, Levy R B firstly brought up the idea of catalytic effect of tungsten carbide like Pt, researchers started using it in multiphase catalytic and electro catalytic field to take place of precious metal catalyst.

In recent years, due to its excellent electrical conductivity, heat dissipation and expansion coefficient, it is used in large scale integrated circuits and high power microwave devices to make substrate, hot pillow chimera, package connector and heat dissipation element. Because of the high thermal conductivity and heat resistance of the tungsten copper alloy, the power of the microelectronic devices is greatly improved, and the device can be miniaturized. The expansion coefficient can match well with the silicon, gallium arsenide and other semiconductor materials in microelectronic devices, so it is an ideal packaging material.