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:
Sep. 23, 1980
Filed:
Feb. 28, 1979
Applicant:
Inventors:
Kyoji Tachikawa, Tokyo, JP;
Hisashi Sekine, Tokyo, JP;
Assignee:
National Research Institute for Metals, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; C22C / ; C21D / ;
U.S. Cl.
CPC ...
148133 ; 29599 ; 7513 / ; 148 / ;
Abstract
In a method for producing Nb.sub.3 Sn superconductors which comprises forming a composite consisting of a core portion and a sheath portion surrounding said core portion, said sheath portion being composed of a Cu-Sn alloy, and said core portion being composed of a Nb metal; elongating said composite; and heat-treating the resulting elongated composite to form an Nb.sub.3 Sn layer between said sheath and core portions; the improvement wherein the Cu-Sn alloy contains 1 to 20 atomic percent of Sn and the Nb metal is an Nb alloy containing 0.1 to 30 atomic percent of Hf.