日本金属学会誌

J. Japan Inst. Metals, Vol. 71, No. 11 (2007),
pp. 940-945

Superconducting Characteristics of 16 mass%Sn-Bronze Processed (Nb, Ti)3Sn Conductor Reacted by Two-Stage Heat Treatment

Takashi Hase1, Kyoji Zaitsu1, Mamoru Hamada1 and Yukinobu Murakami2

1Kobe Steel, Ltd., Kobe 651-2271
2Japan Superconductor Technology Inc., Kitakyusyu 800-0007

Abstract:

Cu-16 mass%Sn-0.5 mass%Ti with a Sn content over a solution limit among Cu has been fabricated as a matrix material of bronze-processed (Nb, Ti)3Sn conductor. This material is well deformed because of no precipitations of Cu-Sn compound in it. The (Nb, Ti)3Sn conductors with the Cu-16 mass%Sn-0.5 mass%Ti matrix have been heat-treated by conventional one-stage and two-stage processes. The resulting conductor has shown high-field superconducting performance which corresponds to the one shifted to 1 T of magnitude higher than that of (Nb, Ti)3Sn conductor with Cu-15 mass%Sn-0.3 mass%Ti matrix.


(Received 2007/5/25)

Keywords:

superconductor, (Nb, Ti)3Sn, bronze process, solution treatment, nuclear magnetic resonance, high-field performance


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