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. 

作者机构：Shanghai Institute of Metallurgy Academia Sinica Shanghai 200050 PRC FBNML MIT Cambridge M.A02139-4307 USA 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：1994年第39卷第6期

页      面：455-458页

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

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

主　　题：high Tc superconductor YBCO grain-orient high Jc high magnetic field. 

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-