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Surface texturing of superconductors by controlled oxygen pressure

United States Patent

*** EXPIRED ***
5,856,277
January 5, 1999
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A method of manufacture of a textured layer of a high temperature superconductor on a substrate. The method involves providing an untextured high temperature superconductor material having a characteristic ambient pressure peritectic melting point, heating the superconductor to a temperature below the peritectic temperature, establishing a reduced pO.sub.2 atmosphere below ambient pressure causing reduction of the peritectic melting point to a reduced temperature which causes melting from an exposed surface of the superconductor and raising pressure of the reduced pO.sub.2 atmosphere to cause solidification of the molten superconductor in a textured surface layer.
Chen; Nan (Downers Grove, IL), Goretta; Kenneth C. (Downers Grove, IL), Dorris; Stephen E. (La Grange Park, IL)
Illinois Superconductor Corporation (Mt Prospect, IL)
08/ 657,415
June 3, 1996
Certain rights in this invention are retained by the U.S. Government pursuant to Contract W-31-109-ENG-38 from the U.S. Department of Energy.