Ultrafine multifilamentary Nb Ti wires with Cu Si alloy matrix
✍ Scribed by S Akita; S Torii; H Kasahara; K Matsumoto; Y Tanaka; T Ajioka; K Tachikawa
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 569 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
The Cu -Si alloy has been proposed as a new matrix material for filamentary Nb -Ti wires in a.c. use. The Cu-Si alloy shows appropriate mechanical and electrical properties, and is economically more favourable than the Cu-Ni alloy matrix used currently. Moreover, the addition of Si to Cu prevents the formation of intermetallic compounds around the filaments.
After extensive investigations on Cu-Si alloy as a matrix material, an ultrafine multifilamentary Nb-Ti/Cu-2.5 wt% Si composite wire has been successfully fabricated. The d.c. superconducting properties of the wire were adequate for use in electrical apparatus. A preliminary study has revealed that the a.c. loss of the new wire is equivalent to that of a typical ultrafine multifilamentary Nb-Ti/Cu-Ni composite wire.