Ductile alloy and process for preparing composite superconducting wire

Patent · Tue Mar 29 04:00:00 EST 1983

OSTI ID:864527

Verhoeven, John D ^[1]; Finnemore, Douglas K ^[1]; Gibson, Edwin D ^[1]; Ostenson, Jerome E ^[1]

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1. Ames, IA

An alloy for the commercial production of ductile superconducting wire is prepared by melting together copper and at least 15 weight percent niobium under non-oxygen-contaminating conditions, and rapidly cooling the melt to form a ductile composite consisting of discrete, randomly distributed and orientated dendritic-shaped particles of niobium in a copper matrix. As the wire is worked, the dendritric particles are realigned parallel to the longitudinal axis and when drawn form a plurality of very fine ductile superconductors in a ductile copper matrix. The drawn wire may be tin coated and wound into magnets or the like before diffusing the tin into the wire to react with the niobium. Impurities such as aluminum or gallium may be added to improve upper critical field characteristics.

• Research Organization: Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
• DOE Contract Number: W-7405-ENG-82
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4378330
• OSTI ID: 864527
• Country of Publication: United States
• Language: English

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/420/29/505/
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