Metal-containing diamond-like-carbon coating compositions

Details Metal-containing diamond-like-carbon coating compositions Metal-containing diamond-like-carbon coating compositions

C - Chemistry, Metallurgy

09

K

C09K 3/14 (2006.01) B32B 15/16 (2006.01) C23C 30/00 (2006.01)

Patent

CA 2557383

A substrate includes a metal diamond-like-carbon coating composed of a first laver and second layer deposited thereupon and having a thickness of about 0.5 micrometer to 10 micrometers. The first layer is composed of a transition metal and includes a first surface and a second surface in contact with the substrate. The second layer is composed of carbon and a transition metal selected from the group consisting of tungsten, niobium, titanium and combinations thereof, and also includes a first surface and a second surface in contact with the first surface of the first layer. The metal-containing diamond-like-carbon coating compositions possesses an abrasive wear rate of no more than about 10 x 10 -15 m3 m-1 N-1 over a negative biasing potential range of about -50 volts to -750 volts.

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