抄録
Doiamond compact (polycrystalline Diamond: PCD) is the material produced by sintering diamond powder under ultra-high pressure and high temperature conditions. It has been widely used as cutting tools, wire drawing dies, rock drilling bits and wear-resistant parts. This paper describes in outline the kinds and the applications of commercial PCD, the manufacuturing process, sintering mechanism and cutting performances of PCD for cutting tools and the relation between PCD and recent CVD diamond tools.