METHOD FOR OBTAINING NANO-DIMENSIONAL POWDER OF TUNGSTEN CARBIDE Russian patent published in 2018 - IPC C01B32/949 C01G41/00 B22F9/16 B82B3/00 B82Y30/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy and can be used in the production of WC tungsten carbide used in the manufacture of carbide materials for high-performance metal cutting tools and other wear-resistant products. To obtain a powder based on WC tungsten carbide with particle size d₅₀, not exceeding 200 nm, a homogeneous powder mixture of nano-sized tungsten or tungsten oxide and nanosized carbon, taken in an amount exceeding the stoichiometric carbon content in tungsten carbide by 10–70 wt.%, is prepared. Heat treatment of said mixture in an electric furnace at a temperature of 1,400–1,600 °C is carried out in hydrogen and / or inert gases, such as nitrogen, argon, followed by binding and removal of excess carbon.

EFFECT: invention makes it possible to obtain tungsten carbide with a reduced defectiveness of the crystal structure and a reduced content of impurities.

3 cl, 1 dwg, 1 tbl, 7 ex