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Some superconducting characteristics of Nb/sub 3/Al composite wires prepared by rapid-quenching process

机译:快速淬火法制备的Nb / sub 3 / Al复合导线的一些超导特性

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Multifilamentary Nb/sub 3/Al superconducting wires for high field magnets above 20 T have been developed by a rapid-quenching process. A long length wire was produced, and a coil was fabricated using the wire. J/sub c/ of this wire was 195A/mm/sup 2/ at 20 T, 4.2 K and 486A/mm/sup 2/ at 20 T, 1.8 K, B/sub c2/ of the coil was 24.6 T at 4.2 K and 26.9 T at 1.8 K and the T/sub c/ was 17.8 K. In addition to investigating the stability, the residual resistance ratio was measured, the value was 16.9. Scattering of J/sub c/ in the longitudinal direction was examined and found to be within /spl plusmn/10%.
机译:通过快速淬火工艺开发了用于20 T以上高磁场磁体的多丝Nb / sub 3 / Al超导线。生产了长线,并使用该线制造了线圈。该线的J / sub c /在20 T,4.2 K时为195A / mm / sup 2 /在20 T,1.8 K时为486A / mm / sup 2 /在4.2 T时线圈的B / sub c2 /为24.6 T在1.8K下的K和26.9T以及T / sub c /为17.8K。除了研究稳定性之外,还测量了残余电阻比,该值为16.9。检查了J / sub c /在纵向上的散射,发现在/ spl plusmn / 10%以内。

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