Patent ID: 6228483
Filing Date: 2001-05-08
Classification: C23C,Y10T

Abstract:
A coated article for tribological applications, said article having a wear surface and comprising:a densified substrate substantially comprising at least one of cemented carbides, cemented nitrides, cemented carbonitrides, ceramics, and combinations thereof; anda coating codeposited on said substrate and providing said wear surface, said coating being about 1-50 .mu.m thick and comprising a pore-free, dense hard phase/cobalt binder composite, said hard phase comprising tungsten carbide, nitride, or carbonitride;wherein said wear surface includes said hard phase/cobalt binder composite, but includes no cubic carbides to a depth at least sufficient to avoid exposure of cubic carbides to a workpiece during use of said article in said tribological applications, such that said coated article provides wear-resistance and chemical inertness and possesses good shape retention at high machining speeds.