TUNGSTEN CARBIDE WC SYNTHESIS METHOD Russian patent published in 2010 - IPC C01B31/34 C01G41/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in metallurgical industry, in making tools and catalysis. Tungsten carbide WC is obtained via mechanochemical activation of mixtures of tungsten metal with carbon material and subsequent calcination in an inert gas medium. The carbon material used is graphite or anthracite or activated carbon or soot or carbon xerogel or carbon nanofibre or carbon fibre made from polyacrylonitrile or any of their mixtures. The carbon material and tungsten are taken in amount which ensures a ratio which is 10-50% more than required for formation of tungsten carbide WC. The calcination temperature lies between 650 and 800°C.

EFFECT: obtaining pure tungsten carbide with high dispersion, lower power consumption and shorter synthesis time.

3 cl, 1 dwg, 5 ex