Grey cast iron-doped diamond-like carbon coatings and methods for depositing same
OwnerParag Guptainventor
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Abstract
The disclosure provides grey cast iron-doped diamond-like carbon coating compositions useful for reducing friction and wear in mechanical contact surfaces and methods for deposition of such compositions.
Claims20
An article comprising a coating composition disposed adjacent a substrate, the substrate comprising a steel alloy or an Si surface and the coating composition comprising diamond-like carbon (DLC);
- wherein
- the coating composition is produced by sputtering a composite target onto the substrate in the presence of a reactive gas;
- the composite target comprises graphite and a GCI alloy;
- and
- the GCI alloy comprises carbon in a range of about 1 at. % to about 6 at. % and silicon in a range of about 0.5 at. % to about 4 at. %.
A method of forming a diamond-like carbon (DLC) coating, comprising sputtering a composite target onto a substrate in the presence of a reactive gas, wherein the composite target comprises graphite and a GCI alloy, wherein the GCI alloy comprises carbon in a range of about 1 at. % to about 6 at. % and silicon in a range of about 0.5 at. % to about 4 at. % wherein the substrate comprises a steel alloy or an Si surface.
Dependencies are inferred from the claim text.