核聚变用内Sn法Nb_3Sn股线的制备与性能  

THE MANUFACTURE AND PROPERTIESOF THE Nb_3 SN STRAND FOR ITER BY THE INTERNAL TIN PROCESS

作　　者：唐先德[1] 李春广[1] 武玉[2] 李昆[1] 闫果[1] 杨明[1] 周廉[1] 张平祥[1] 冯勇 卢亚锋[1] 翁佩德[2] 

机构地区：[1]西北有色金属研究院,西安710016 [2]中国科学院等离子体物理研究所,合肥230031 [3]西部超导材料科技有限公司,西安710016

出　　处：《低温物理学报》2005年第A02期926-931,共6页Low Temperature Physical Letters

摘　　要：采用内Sn法工艺研究了ITER用Nb3Sn股线的制备与性能.我们已成功的研究出了批量生产股线的制备技术,股线具有优异的特性.股线非Cu区的临界电流密度Jcn在12T、4.2K、0.1μV/cm判据下达到1087A/mm2;在±3T的磁场变化范围,磁滞损耗为540kJ/m3(4.2K);股线的n值在12T、4.2K下为20.此外我们也研究了Nb3Sn层的显微结构和Nb/Sn比.The manufacture and properties of the multifilamentary Nb3Sn strand for ITER have been investigated by the internal tin process. We successfully investigated in manufacturing the mass-produced strands having excellent properties. The strand show that non-copper critical current density Jcn attained 1087A/mm^2 （at 12T, 4.2K, 0.1μV/cm） and the hysteresis losses were equal to 540kJ/m^3 （for magnetic field varying in the range of ±3T）. The strand show 20 as n value at 12T, 4. 2K. Furthermore, the Nb3Sn layers microstructure and Nb/Sn ratio have been investigated.

关 键 词：内Sn法Nb3Sn 股线制备 特性 显微结构 

分 类 号：O511.3[一般工业技术—材料科学与工程]