Manufacture of niobium-aluminum superconducting material

US4391657A · kind A · utility

Assignee

• Bell Telephone Laboratories, Inc. · US

Inventors

• William L. Feldmann · Bernardsville, US
• John M. Rowell · Berkeley Heights, US
• Paul H. Schmidt · Chatham, US

Key dates

• Filing date: Jul 17, 1981
• Grant date: Jul 5, 1983
• Expiry date: Jul 17, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49014

Abstract

Niobium-aluminum superconducting wire and other shaped articles are made by heating a precursor body which comprises niobium, an auxiliary element which is more easily oxidizable than aluminum, and aluminum oxide, the aluminum oxide being supported by a surface or a matrix comprising niobium and the auxiliary element. Among suitable auxiliary elements are zirconium, hafnium, scandium, yttrium, and the nonmagnetic rare earths.