Method of making a composite body coated with CVD diamond film

Details Method of making a composite body coated with CVD diamond film Method of making a composite body coated with CVD diamond film

1997-03-14

1999-06-15

Turner, Archene

Coating processes

With pretreatment of the base

Etching, swelling, or dissolving out part of the base

427249, 427307, 427314, C23C 1626

Patent

active

059120533

ABSTRACT:
At least the surface region of a cutting tool substrate made of tungsten carbide in a cobalt matrix is carburized to chemically passivate the cobalt prior to deposition of diamond film on it. The passivation improves adhesion by preventing reaction of the cobalt with the diamond in the course of the deposition process.

REFERENCES:
patent: 4648119 (1987-03-01), Grab et al.
patent: 5112643 (1992-05-01), Ikegaya et al.
patent: 5660881 (1997-08-01), Okamura

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