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Titolo:
(Nb,Ti)(3)Sn superconducting wire reinforced with Nb-Ti-Cu compound
Autore:
Sakamoto, H; Higuchi, M; Endoh, S; Nagasu, Y; Kimura, A; Wada, K; Meguro, S; Ikeda, M;
Indirizzi:
Furukawa Elect Co Ltd, Nikko 3211493, Japan Furukawa Elect Co Ltd Nikko Japan 3211493 t Co Ltd, Nikko 3211493, Japan
Titolo Testata:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
fascicolo: 1, volume: 10, anno: 2000,
pagine: 1008 - 1011
SICI:
1051-8223(200003)10:1<1008:(SWRWN>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
MULTIFILAMENTARY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Sakamoto, H Furukawa Elect Co Ltd, 500 Kiyotaki, Nikko 3211493, Japan Furukawa Elect Co Ltd 500 Kiyotaki Nikko Japan 3211493 Japan
Citazione:
H. Sakamoto et al., "(Nb,Ti)(3)Sn superconducting wire reinforced with Nb-Ti-Cu compound", IEEE APPL S, 10(1), 2000, pp. 1008-1011

Abstract

Reinforcement of Nb3Sn wires is required for high field superconducting magnets because the Nb3Sn superconductor is very sensitive to mechanical strain and its critical current degrades drastically at a higher absolute strain than 0.3%. Recently, Nb3Sn superconducting wires reinforced with tantalum, Cu-Nb alloy and Al2O3-dispersed copper, have been developed. But, these high-strength wires do not show very high strength at an absolute strain of 0.3% because these reinforcements have a similar Young's modulus to copper. In addition, Nb3Sn layers of these wires experience an additional compressive strain caused by the differences in thermal contraction between reinforcements and Nb3Sn layers. Such a compressive strain also decreases the critical current of the wire. An intermetallic compound was selected as a reinforcement for Nb3Sn superconducting wire because such a compound is expectedto have a high Young's modulus and a similar thermal contraction to the Nb3Sn compound. Fortunately, the Nb-Ti-Cu compound can be formed from the Nb-Ti and copper composite during reaction heat treatment for Nb3Sn layers. Therefore, (Nb,Ti)(3)Sn superconducting wire reinforced with the Nb-Ti-Cu compound has been fabricated. The wire shows a 0.2% proof stress of 400 MPa and maintains a critical current density equal to the unreinforced wire.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 23:00:11