Cemented carbide substrate having a diamond layer of high adhesi

Details Cemented carbide substrate having a diamond layer of high adhesi Cemented carbide substrate having a diamond layer of high adhesi

1994-03-24

1995-05-16

King, Roy V.

Abrasive tool making process, material, or composition

Miscellaneous

427307, 427309, 427122, 427249, 428408, 423446, B24D 306, B05D 300

Patent

active

054156742

ABSTRACT:
An improved process for improving the adhesion between a cemented carbide substrate and a diamond layer deposited thereon by removing the binder phase of the cemented material from the surface of the substrate prior to diamond coating. For this purpose, the process of the invention uses an apparatus as is conventionally used in various technologies for the CVD process of diamond layers. The process parameters are here altered from those of the conventional diamond coating in such a way that binder metal is evaporated from a very narrow boundary zone of the substrate surface, utilizing the reaction heat from the recombination of previously dissociated hydrogen gas directly at the substrate surface.

REFERENCES:
patent: 5236740 (1993-08-01), Peters et al.

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