FIELD: solid alloys. SUBSTANCE: metallic tungsten powder with specific surface 2 m2/g (not less) is put into molybdenum combustion boat, heated up to 840-1100 C and kept in the flow of methane-hydrogen gaseous mixture containing 0.4-3.2 vol. % methane. At low temperature of carbidizing methane content in the mixture is high, and at high temperature - low. Specific surface of tungsten carbide is 2,0-8,0 m2/g, powder particle size is 0.05-0.20 mcm, content of free carbon is 0.1 wt.-%, not more. EFFECT: improved method of tungsten carbide powder preparing. 2 cl, 1 tbl
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Authors
Dates
1995-02-09—Published
1991-07-03—Filed