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Optimization of processing parameter of (Nb,Ta)[sub 3]Sn superconductors with Ta-Sn core.
- Source :
- AIP Conference Proceedings; 2002, Vol. 614 Issue 1, p917, 8p
- Publication Year :
- 2002
-
Abstract
- Thick and uniform Nb[sub 3]Sn layers containing Ta with excellent high-field performance are synthesized through the reaction between a Ta-Sn core and a Nb-based alloy sheath. A small amount of Cu addition to the core reduces the reaction temperature. The effect of amount of Cu addition to the core on the reaction temperature, microstructure and high-field performance of the conductor has been studied changing the Ta/Sn composition ratio of the core. A variety of J[sub c] versus magnetic field performance has been obtained by adjusting the amount of Cu addition to the core and the reaction temperature in the present Nb[sub 3]Sn conductors. Furthermore, the effect of the sheath material on the structure and high-field performance of the conductor has been studied. Results obtained in the Nb-2at%Ti sheath specimen were compared with those obtained in the Nb-4at%Ta sheath specimen. A clear line composed of Cu-Ti precipitates separates the Nb[sub 3]Sn layer into two zones, when a small amount of Cu is added to the core of the Nb-2at%Ti sheath specimen. Nb-4at%Ta sheath provides appreciably better high-field performance in the conductor than Nb-2at%Ti sheath does. [ABSTRACT FROM AUTHOR]
- Subjects :
- SUPERCONDUCTORS
ALLOYS
Subjects
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 614
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 6666071