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US 4,525,417 AGranted
Carbon-containing sliding layer
AssigneeU.S. Philips Corporation
InventorsHeinz Dimigen, Hubertus Hubsch
Life of this patent
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Abstract
A workpiece comprises a substrate having a sliding surface provided with a friction-reducing coating. Such coating consists essentially of elemental carbon dispersed in a matrix formed of at least one metallic element in the proportions of 50.1 to 99.1 at % of the elemental carbon and 0.1 to 49.9 at % of the metallic element. The ratio of the metallic element to the elemental carbon differs from the stoichiometric ratio of the carbide.
Claims12
A workpiece comprising a substrate having a sliding surface provided with a friction-reducing coating;
- said coating consisting essentially of elemental carbon dispersed in a matrix formed of at least one metallic element in the proportions of 50.1 to 99.9 at % of the elemental carbon and 0.1 to 49.9 at % of the metallic element, the ratio of the metallic element to the elemental carbon differing from the stoichiometric ratio of a carbide.
Dependencies are inferred from the claim text.