Magnetization study of ITER-type internal-Sn Nb3Sn superconducting wire

Chao Wu Zhang, Lian Zhou, Sulpice Andre, Jean Louis Soubeyroux, Verwaerde Christophe, Ky Hoang Gia, Ping Xiang Zhang, Ya Feng Lu, Xian De Tang

科研成果: 期刊稿件文章同行评审

6 引用 (Scopus)

摘要

Through magnetization measurement with a SQUID magnetometer the heat treatment optimization of an international thermonuclear experimental reactor (ITER)-type internal-Sn Nb3Sn superconducting wire has been investigated. The irreversibility temperature T*(H), which is mainly dependent on A15 phase composition, was obtained by a warming and cooling cycle at a fixed field. The hysteresis width ΔM(H) which reflects the flux pinning situation of the A15 phase is determined by the sweeping of magnetic field at a constant temperature. The results obtained from differently heat-treated samples show that the combination of T*(H) with ΔM(H) measurement is very effective for optimizing the heat reaction process. The heat treatment condition of the ITER-type wire is optimized at 675°C128 h, which results in a composition closer to stoichiometric Nb 3Sn and a state with best flux pinning.

源语言英语
文章编号048
页(从-至)1764-1769
页数6
期刊Chinese Physics
16
6
DOI
出版状态已出版 - 1 6月 2007
已对外发布

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