A diamond and/or diamond-like carbon-coated hard material

Details A diamond and/or diamond-like carbon-coated hard material A diamond and/or diamond-like carbon-coated hard material

C - Chemistry, Metallurgy

30

B

C30B 29/04 (2006.01) C23C 14/02 (2006.01) C23C 14/06 (2006.01) C23C 16/02 (2006.01) C23C 16/26 (2006.01)

Patent

CA 2061944

A diamond-coated hard material having a diamond- or diamond-like carbon-coating layer with a high bonding strength to a substrate is provided. This diamond- and/or diamond-like carbon-coated hard material comprises a diamond- and/or diamond-like carbon-coating layer formed on the surface of a hard material in which at least one intermediate layer is present between the surface of the substrate and the diamond- and/or diamond-like carbon-coated layer, and (1) micoscopic roughness is present and (2) the surface roughness in a standard length is represented by an Rmax of 0.5 µ m, preferably 1.0 µ m, to 30 µ m when the standard length is 50 µ m, in the interface of the outermost surface of the intermediate layer and the diamond- and/or diamond-like carbon-coated layer.

Cette invention concerne un matériau dur à revêtement diamanté se présentant sous la forme d'un substrat portant une couche de diamants ou de carbone diamant collée à l'aide d'un adhésif haute adhérence. Ce matériau dur comprend une couche de diamants et/ou de carbone diamant déposée sur une de ses faces avec au moins une couche intermédiaire entre les deux. Le produit se caractérise (1) par une microrugosité et (2) une rugosité de surface par longueur unitaire correspondant à Rmax = 0.5 m, la valeur privilégiée se situant entre 1.0 m et 30 m pour une longueur unitaire de 50 m à l'interface couche intermédiaire-couche de diamant et/ou de carbone diamant.

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