Surface-coated blade member for cutting tools and process for producing same

摘要

The surface-coated blade member for cutting tools comprises a metal substrate and a coating on at least one surface of said substrate, said coating composed of a layer of vapor deposited titanium on the surface of said metal substrate and at least one layer of vapor deposited titanium compound on said layer of titanium, and said layer of titanium compound being selected from the group consisting of titanium carbide, titanium nitride, titanium carbonitride, titanium oxy-carbide and titanium oxy-carbo-nitride, said layer of titanium being no larger than 2 mu m thick and said layer of titanium compound being 0.5 to 10 mu m thick. A process for producing such a blade member is also disclosed.