초록 ▼

The present invention provides a method of manufacturing a superhard article with diamond coat having an excellent resistance against breakaway or peeling off of its coat, in particular, a cutting tool. A carbide base material formed to a desired shape containing tungsten carbide (WC) as a main comp

The present invention provides a method of manufacturing a superhard article with diamond coat having an excellent resistance against breakaway or peeling off of its coat, in particular, a cutting tool. A carbide base material formed to a desired shape containing tungsten carbide (WC) as a main component is soaked in a solution of alkali chloride and undergoes electrolytic etching on the surface of the base material at a maximum removal speed of 0.2 to 1.5 .mu.m/min for 3 to 30 minutes and, after the surface of the base material is washed, a diamond coat is developed on the surface of the base material by vapor deposition.

대표청구항 ▼

[ What is claimed is:] [1.] A method of manufacturing a superhard article with a diamond coat, comprising:placing a carbide base material formed to a desired shape and comprising tungsten carbide (WC) as a main component in a solution of alkali chloride,electrolytically etching the surface of the ca

[ What is claimed is:] [1.] A method of manufacturing a superhard article with a diamond coat, comprising:placing a carbide base material formed to a desired shape and comprising tungsten carbide (WC) as a main component in a solution of alkali chloride,electrolytically etching the surface of the carbide base material in said solution of alkali chloride at a maximum speed of progress of an etching front through the carbide base material of 0.2 to 1.5 .mu.m/min for 3 to 30 minutes,washing the surface of the etched carbide base material, and thereafterforming the diamond coat on the surface of the washed carbide base material by a vapor deposition technique.