Experimental Study on Bi-2212 Cable-in-Conduit Conductor
Experimental Study on Bi-2212 Cable-in-Conduit Conductor
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DOI：
10.1109/tasc.2018.2813383
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发表时间：
2018-06
影响因子：
1.8
通讯作者：
Hua-jun Liu;Hong-jun Ma;Fang Liu;Yi Shi;J. Qin;Yu Wu;Jian-gang Li;L. Lei
中科院分区：
文献类型：
--
作者：
Hua-jun Liu;Hong-jun Ma;Fang Liu;Yi Shi;J. Qin;Yu Wu;Jian-gang Li;L. Lei
Bi2Sr2CaCu2Ox(Bi2212)具有很高的上临界磁场(Hc2)和临界电流密度(Jc)，是最有前途的强场应用材料之一。目前，中科院等离子体物理研究所正在进行Bi2212中芯电缆导体的实验研究。采用高压热处理工艺改善了Bi2212线材和CICC的性能。对Bi2212 CICC样品进行了50atm的高压热处理，并在液氦中进行了测试。本文详细介绍了Bi2212 CICC试件的制作工艺和测试方法。用临界电流对Bi2212CICC的性能进行了评价，并对不同热处理压力下的Bi2212CICC进行了性能比较。测试结果表明，对于单线临界电流数据，仅有约5%的退化，50atm的超压处理使导体临界电流提高了102%。
With very high upper critical magnetic field (Hc2) and critical current density (Jc), Bi2Sr2CaCu2Ox (Bi-2212) is one of the most promising materials for high-field applications. Experimental research on Bi-2212 cable-in-conduit conductor (CICC) is now carried out at the Institute of Plasma Physics, Chinese Academy of Sciences. High pressure heat treatment process was adopted to improve the performance of Bi-2212 wires and CICC. The Bi-2212 CICC sample was heat treated with high pressure of 50 atm and tested in liquid helium (LHe). In this paper, the manufacturing procedures and test method of Bi-2212 CICC sample are described in detail. The performance of Bi-2212 CICC was evaluated by the critical current of strands and performance comparison was made between the Bi-2212 CICC samples with different heat treatment pressure. The test results showed that there was only about 5% degradation with respect to single wire critical current data and the conductor critical current was increased by 102% with 50 atm overpressure processing.