SUPERHARD COMPOSITE MEMBER AND ITS PRODUCTION

摘要

A superhard composite material consisting of a sintered body of cemented carbid or the like which is composited with diamond grains comprises a hard phase consisting of a material containing at least one element being selected from a group consisting of WC, TiC, TiN and Ti (C, N); a binder phase being mainly composed of an iron family metal; and a plurality of diamond grains being dispersed in a structure having said hard phase and said binder phase. The plurality of diamond grains have at least either a structure forming no skeletons or a structure being provided with no parts where said diamond grains are directly bonded to each other.