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Method of Producing Ceramic Composition Having Low Friction Coefficient at High Operating Temperatures

Abstract: 

A method for producing a stable ceramic composition having a surface with a low friction coefficient and high wear resistance at high operating temperatures. A first deposition of a thin film of a metal ion is made upon the surface of the ceramic composition and then a first ion implantation of at least a portion of the metal ion is made into the near surface region of the composition. The implantation mixes the metal ion and the ceramic composition to form a near surface composite. The near surface composite is then oxidized sufficiently at high oxidizing temperatures to form an oxide gradient layer in the surface of the ceramic composition.

Patent Number: 
4,775,548
Date Of Issue: 
10/04/1988
Inventors: 

James Lankford