METHOD OF PREPARING HARD MATERIAL POWDERS Russian patent published in 1999 - IPC

FIELD: methods of preparing hard material powders, in particular, simple method of preparation of powders containing WC and cobalt and/or nickel. SUBSTANCE: powder of ammonium paratungstate ART and powder of basic salt of cobalt and/or nickel are mixed with water. Suspension is agitated to initiate reaction within temperature range from room temperature to boiling point of solution. In this case, precipitation is formed which is filtered, dried and at least reduced to metal powder. Additionally added to suspension is at least one salt of transition metal V, Cr, and/or Mo. As a result, homogeneous fine metal powder is produced which may be used not only for preparation of cemented carbide but also in materials for catalysis or in materials for alloys of high density. EFFECT: higher efficiency. 5 cl