Contact Resistance Characteristics of Butt-Weld Joints of (Nb, Ti)3Sn Superconducting Wires

Applicability of resistance butt welding to (Nb, Ti)3Sn multifilamentary superconducting wires was studied in both single-and seven-strand conductors, and the dominant factors for the contact resistance of those joints were investigated. Superconducting joint characteristics were partially attained...

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Published inTEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Vol. 30; no. 8; pp. 377 - 386
Main Authors SATO, Chie, KAMOSHIDA, Rikuo, GOTOH, Yoshitaka, TAKAHASHI, Ryukichi, WADAYAMA, Yoshihide, KOORIKI, Katsuo, ASANO, Katsuhiko, SHIGENAKA, Akira
Format Journal Article
LanguageEnglish
Published CRYOGENICS AND SUPERCONDUCTIVITY SOCIETY OF JAPAN 1995
Subjects
(Nb,Ti)3Sn superconductor
contact resistance
interface
resistance butt welding
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Summary:Applicability of resistance butt welding to (Nb, Ti)3Sn multifilamentary superconducting wires was studied in both single-and seven-strand conductors, and the dominant factors for the contact resistance of those joints were investigated. Superconducting joint characteristics were partially attained in the case of welding after reaction (react & weld) and that of reaction after welding (weld & react). For react & weld joints, damaging effects on the superconducting filaments in the welding process were dominant, while for weld & react joints the degree of filament-to-filament alignment was found to be the dominant factor. In the seven-strand conductor joint case, the degree of strand-to-strand alignment at the bonding interface was found to become the dominant factor.
ISSN:0389-2441
1880-0408
DOI:10.2221/jcsj.30.377