Patent ID: 8703245
Filing Date: 2014-04-22
Classification: B23B,B23C,C23C,Y10T

Abstract:
1. A method of forming a coated cutting tool, cutting member or a wear part having a chemical vapor deposition (CVD) coating, comprising the steps of: (a) providing a substrate selected from the group consisting of high speed steel alloys, carbon steels, low alloyed steels, austenitic stainless steels, ferritic stainless steels, martensitic stainless steels, tool steels, cemented carbides, nickel and cobalt super alloys, oxide ceramics and nitride ceramics; (b) placing the substrate in a CVD reaction chamber, and (c) depositing, by CVD, an alloyed coating layer comprising CVD reaction products of: (c1) a titanium chloride; (c2) chromium chloride and optionally one or more of a vanadium halide and a silicon halide; and (c3) one or more of nitrogen, hydrogen and methane, such that: the alloyed coating layer has the general formula (Ti