“三测量点”确定NbTi/Cu复合超导线材分流温度  

‘THREE POINTS'METHOD TO DETERMINE CURRENT SHARING TEMPERATURE OF NbTi/Cu COMPOSITE SUPERCONDUCTING WIRE FOR ITER

作　　者：高慧贤[1] 刘维涛[1] 严凌霄[1] 刘建伟[1] 李建峰[1] 杜社军[1] 张丰收[1] 刘向宏[1] 冯勇[1] 张平祥[1] 刘生 

机构地区：[1]西部超导材料科技股份有限公司,陕西省西安市710018 [2]ITER中国国际核聚变能源计划执行中心,北京100862

出　　处：《低温物理学报》2014年第5期392-396,共5页Low Temperature Physical Letters

摘　　要：分流温度(Tcs)是指超导磁体在特定的工作磁场与电流下,当温度升高,超导体中的电流开始流向基体材料时的温度.本文测量了在不同磁场,不同温度时多个测量条件下ITER用NbTi/Cu复合超导线材样品临界电流密度的值,Jc=F(B,T);根据线材不同的使用条件,总结出"三测量点"确定NbTi/Cu线材分流温度的简便方法,对比导体短样分流温度的测量结果,进一步验证了"三测量点"测量线材分流温度并预测导体分流温度的可行性.它为线材制造商及时了解工艺改进效果提供了有力依据.Three points＇ method was used to measure Current sharing temperature （Tcs） of NbTi/Cu supercon- ducting wire for PF2-4 coil of ITER, which is compared to the experiment of the conductor sample in SULTAN test facility. The consistency of that indicates the wire manufacturer can use the wire property to predict the Tcs of conductor. Based on this method, the Tcs for NbTi/Cu wires of different technics were studied. The validity of this method is verified again by comparing the Tcs of wires to that of conductor samples for PF5 and CB coils.

关 键 词：临界电流 分流温度 NbTi/Cu复合超导线材 

分 类 号：O511.3[一般工业技术—材料科学与工程]