J_c(77.3 K, 20 T)=2×l0~4 A/cm^2 Achieved in Bulk High T_c Superconducting Material  

作　　者：傅耀先 杨宏川 蔡传兵 王葛亚 施天生 E. J. McNiff Jr. 

机构地区：[1]Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050, PRC [2]FBNML, MIT, Cambridge, M.A02139-4307, USA

出　　处：《Chinese Science Bulletin》1994年第6期455-458,共4页

基　　金：Project supported by the National Center for R & D on Superconductivity of China.

摘　　要：Since the discovery of high T_c oxide superconductor, scientists and engineers aredeeply concerned with the possibility of its application to the electric machine withstrong operating current at high magnetic fields. Because of the serious problem ofweak link in the sintered bulk materials processed by regular ceramic powder technolo-gy, the critical current density at 77.3 K is low and it gets much lower with theincreasing magnetic field. Scientists look forward to heighening J_c of the high T_c ma-

关 键 词：HIGH Tc SUPERCONDUCTOR YBCO grain-orient HIGH JC HIGH magnetic field. 

分 类 号：TM26[一般工业技术—材料科学与工程]