EASY-TO-CAKE POWDER MIXTURE FOR PRODUCTION OF MATERIAL IN THE FORM OF BOUND CARBIDES ON TUNGSTEN BASIS Russian patent published in 1999 - IPC

FIELD: inorganic syntheses. SUBSTANCE: mixture contains at least 70% tungsten carbide, 2 to 15% iron-group metal binder, one or more carbides, nitrides, and carbido-nitrides of IVb, Vb, and VIb group elements and, according to invention, from 1 to 8% thallium (niobium) oxide and powdered elementary carbon in stoichiometric quantity for reaction: Ta(Nb)₂O₃+7C- >2Ta(Nb)C+5CO. The thus prepared caked product has more uniform fine structure and is distinguished by low spread of Wickers hardness and impact resistance characteristics. EFFECT: improved consumer's characteristics. 8 cl, 3 tbl, 3 ex