HARD POWDER, METHOD FOR PRODUCING HARD POWDER AND SINTERED HARD ALLOY

摘要

Disclosed is a hard powder containing much complex carbonitride solid solution, which improves sintering properties of a sintered hard alloy and enables the alloy to have a uniform structure.  The hard powder contains not less than 90% by volume of a complex carbonitride solid solution represented by the following formula: (Ti1-x, Mx)(C1-y, Ny) [wherein M represents at least one element selected from the group consisting of W, Mo, Nb, Zr and Ta; x represents the atomic ratio of M relative to the total of Ti and M; y represents the atomic ratio of N relative to the total of C and N; and x and y respectively satisfy 0.05 = x = 0.5 and 0.01 = y = 0.75].