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Method of modifying a surface

United States Patent

6,086,726
July 11, 2000
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
The present invention provides a surface modification method that provides beneficial changes in surface properties, can modify a surface to a greater depth than previous methods, and that is suitable for industrial application. The present method comprises applying a thin-film coating to a surface of a substrate, then subjecting the coated surface to an ion beam. The ion beam power pulse heats the coated surface, leading to alloying between the material in the coating and the material of the substrate. Rapid cooling of the alloyed layer after an ion beam pulse can lead to formation of metastable alloys and microstructures not accessible by conventional alloying methods or intense ion beam treatment of the substrate alone.
Renk; Timothy J. (Albuquerque, NM), Sorensen; Neil R. (Albuquerque, NM), Senft; Donna Cowell (Albuquerque, NM), Buchheit, Jr.; Rudolph G. (Columbus, OH), Thompson; Michael O. (Ithaca, NY), Grabowski; Kenneth S. (Alexandria, VA)
Sandia Corporation (Albuquerque, NM)
09/ 082,288
May 19, 1998
This invention was made with Government support under Contract DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.