Superhard article with diamond coat and method of manufacturing

Details Superhard article with diamond coat and method of manufacturing Superhard article with diamond coat and method of manufacturing

1997-11-25

2000-08-29

King, Roy V.

Abrasive tool making process, material, or composition

With inorganic material

4272498, 427309, 427560, 205674, 407119, B24D 302, C23C 1626

Patent

active

061102407

ABSTRACT:
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.

REFERENCES:
patent: 4925538 (1990-05-01), Matsumoto et al.
patent: 5014588 (1991-05-01), Omata et al.
patent: 5164051 (1992-11-01), Komaki et al.
patent: 5227034 (1993-07-01), Stein et al.
patent: 5567526 (1996-10-01), Peters et al.
patent: 5700518 (1997-12-01), Lee et al.

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