Patent ID: 8394169
Filing Date: 2013-03-12
Classification: B22F,C22C,C23C

Abstract:
1. A sintered cemented carbide body formed by sintering a starting powder mixture, the sintered cemented carbide body having increased resistance to plastic deformation comprising: tungsten carbide; a binder phase comprising at least one metal of the iron group or an alloy thereof; one or more solid solution phases wherein each one of the solid solution phases comprising at least one of the carbides and carbonitrides of a combination comprising zirconium, niobium, and tungsten, and wherein the zirconium and the niobium having a source comprising at least one or both of a solid solution carbide consisting essentially of zirconium and niobium or a solid solution carbonitride consisting essentially of zirconium and niobium; and said body having a content mass ratio Nb/((Zr+Nb) greater than or equal to about 0.6.