Coating of ultra-hard materials

Details Coating of ultra-hard materials Coating of ultra-hard materials

C - Chemistry, Metallurgy

30

B

C30B 29/04 (2006.01) C04B 41/52 (2006.01) C04B 41/89 (2006.01) C23C 4/02 (2006.01) C23C 14/06 (2006.01) C23C 16/30 (2006.01) C23C 30/00 (2006.01)

Patent

CA 2323826

A unit which comprises a body of ultra-hard material such as CVD diamond has a layer of plasma spray cemented carbide bonded to a surface thereof. The bonding is achieved through a bonding layer comprising an inner region bonded to the surface and comprising a minor amount of a carbide-forming metal and a major amount of a ductile metal and an outer region bonded to the cemented carbide layer comprising nickel, cobalt, iron or an alloy containing one or more of these metals.

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