Patent ID: 6207102
Filing Date: 2001-03-27
Classification: B22F,C22C,C23C

Abstract:
A method of making coated cemented carbide bodies with a composition of 4 to 15 weight % Co, up to 20 weight % cubic carbides and rest WC said method including the steps of:sintering cemented carbide bodies including heating to a sintering temperature above 1350.degree. C. in an argon atmosphere;cooling the bodies in the temperature range from 1350.degree. to 1250.degree. C. at a cooling rate of more than 20.degree. C./min to form binder phase of nominal content on the surface;cooling the bodies thereafter in a conventional manner; andproviding the bodies with a thin wear resistant coating including at least one layer by CVD-, MTCVD- or PVD-technique.