Diamond-coated composite cutting tool and method of making

Details Diamond-coated composite cutting tool and method of making Diamond-coated composite cutting tool and method of making

B - Operations, Transporting

24

D

B24D 3/10 (2006.01) C23C 16/02 (2006.01) C23C 16/27 (2006.01) C30B 29/04 (2006.01)

Patent

CA 2155144

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.

Au moins la région en surface d'un substrat d'outil de coupe, fait de carbure de tungstène dans une matrice de cobalt, est carburée pour passiver chimiquement le cobalt avant le dépôt sur ce dernier d'une pellicule de diamant. La passivation améliore l'adhésion en empêchant la réaction du cobalt avec le diamant au cours du processus de dépôt.

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