The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1992
Filed:
Oct. 16, 1987
Siba P Ray, Plum Boro, PA (US);
C Norman Cochran, Oakmont, PA (US);
William E Libent, Vandergrift, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
An in situ formed superconducting cermet comprising an interwoven matrix of a superconducting ceramic and a noble metal and a method of making same are disclosed. An initial mixture is formed comprising (1) a first reactant selected from the class consisting of one or more noble metals in an oxidized state, and a mixture of one or more oxidized noble metals and one or more noble metals; (2) one or more rare earth-bearing reactants selected from the class consisting of one or more rare earths in an oxidized state, one or more rare earths in elemental form, and a combination thereof; (3) one or more alkaline earth-bearing reactants selected from the class consisting of one or more alkaline earth metals in an oxidized state, one or more alkaline earth metals, and a combination thereof; and (4) a copper based reactant selected from the class consisting of copper oxide, an oxide of a copper base alloy, elemental copper, a copper base alloy, and a combination of two or more thereof; wherein at least one of said rare earth-bearing, alkaline earth metal-bearing, or copper based reactants is in elemental form. The mixture of reactants is reaction sintered together to reduce at least a portion of the first reactant and to oxidize at least a portion of the other reactants to form a superconducting cermet in situ consisting essentially of an interwoven matrix of a noble metal and a superconductive ceramic.