一种新型YBCO高温超导带材临界电流特性测试方法  

A novel method on the critical current test of YBCO HTS tape

作　　者：诸嘉慧[1] 丘明[1] 田军涛[1] 

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《低温与超导》2009年第5期16-19,共4页Cryogenics and Superconductivity

摘　　要：针对YBCO高温超导带材临界电流特性,文中基于四引线法,构造了一个集成有背景磁场发生装置的减压降温的低温测量装置。该装置包括一个提供背景磁场的双"E"形铁心线圈磁体;一个可以旋转0—360°的超导带材样本架以及一套可实现减压降温功能的低温测试系统。通过对低温杜瓦内温度、YBCO带材所处背景磁场大小、背景磁场与YBCO带材表面夹角的控制,实现了YBCO超导带材在不同温区、不同磁场及磁场方向下的临界电流特性的测量。这种新颖的测量方法和装置,综合考虑了环境温度、背景磁场和磁场方向变化的具体影响,能够获得较全面的YBCO高温超导带材临界电流性能参数。A novel critical current characteristic of YBCO coated conductor test system is improved based on four - probe method. The system is made up of a double - E shape core with windings which can generate background field, a sample rack which can whirl from 0 to 360 degree and a low temperature vacuum device with functions of decompression and cooling. The critical current characteristics of YBCO coated conductors depended on variable temperature, magnetic field magnitude and its direction are gained by controlling these factors in the system. The novel measurement method considering the effects of environment temperature, background magnetic field and its direction can be used to test the critical current characteristics of YBCO HTS tape effectively.

关 键 词：YBCO 临界电流特性 测量 背景磁场 减压降温 

分 类 号：TM26[一般工业技术—材料科学与工程] TM262[电气工程—电工理论与新技术]