Methods for reducing wear on silicon carbide ceramic surfaces
AssigneeThe United States of America as represented by the Secretary of Commerce
InventorsDouglas E. Deckman, Stephen M. Hsu
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Abstract
Methods for reducing wear on silicon carbide ceramic surfaces comprise contacting the surface with a lubricating oil composition including an organic sulfide. Preferred organic sulfides are of the formula R.sup.1 --S--(S).sub.n --R.sup.2 wherein R.sup.1 and R.sup.2 are individually selected from the group consisting of alkyl, aryl, arylalkyl and alkaryl groups and hydrogen, but not both R.sup.1 and R.sup.2 are hydrogen, and n is 0, 1 or 2.
Claims11
A method for reducing wear on a silicon carbide ceramic surface, comprising contacting the silicon carbide ceramic surface with a lubricating oil composition including an organic sulfide in an amount sufficient to reduce wear on the silicon carbide ceramic surface, the organic sulfide being of the formula R.sup.1 --S--(S).sub.n --R.sup.2 wherein R.sup.1 and R.sup.2 are individually selected from the group consisting of alkyl, aryl, aralkyl and alkaryl groups and hydrogen, but not both of R.sup.1 and R.sup.2 are hydrogen, and n is 0, 1 or 2.
A method for reducing wear on a silicon carbide ceramic surface, comprising contacting the silicon carbide ceramic surface with a lubricating oil composition including benzyl phenyl sulfide in an amount sufficient to reduce wear on the silicon carbide ceramic surface.
Dependencies are inferred from the claim text.