| abstract |
The purpose of the present invention is to provide a sintered body which contains W and WC and has excellent hardness, strength, compactness and corrosion resistance without containing W 2 C, and which is applicable to cutting tools, molds for glass molding, seal rings and the like. A sintered body which contains, as binder phases, 4-50 vol% of tungsten metal, 50-95 vol% of tungsten carbide (WC) and 0.5-5.0 vol% of tungsten oxide (WO 2 ), and which is characterized in that the tungsten oxide (WO 2 ) has an average particle diameter of from 5 nm to 150 nm (inclusive) and is present within the sintered body structure at an average density of 5-20 particles/μm 2 . |