A-15 superconducting composite wires and a method for making
A method for fabricating superconducting wires wherein a billet of copper containing filaments of niobium or vanadium is rolled to form a strip which is wrapped about a tin-alloy core to form a composite. The alloy is a tin-copper alloy for niobium filaments and a gallium-copper alloy for vanadium filaments. The composite is then drawn down to a desired wire size and heat treated. During the heat treatment process, The tin in the bronze reacts with the niobium to form the superconductor niobium tin. In the case where vanadium is used, the gallium in the gallium bronze reacts with the vanadium to form the superconductor vanadium gallium. This new process eliminates the costly annealing steps, external tin plating and drilling of bronze ingots required in a number of prior art processes.
- Assignee:
- The United States of America as represented by the United States Department of Energy
- Patent Number(s):
- US 4489219
- Application Number:
- TRN: 85-010377
- OSTI ID:
- 5862175
- Resource Relation:
- Patent File Date: Filed date 8 Jun 1983; Other Information: PAT-APPL-500806
- Country of Publication:
- United States
- Language:
- English
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