几种Bi-2223/Ag超导带材层状复合结构的制备及性能研究  

STUDY ON THE PERFORMANCES OF SEVERAL LAMINATED Bi-2223/Ag HIGH TEMPERATURE SUPERCONDUCTOR TAPE COMPOSITE STRUCTURES

作　　者：丁士育 宋秀华 张劲松 韩冰 刘莉 刘睿 陈姗姗 孙海波 孙建峰 韩征和[2] 

机构地区：[1]北京英纳超导技术有限公司,北京100176 [2]清华大学应用超导研究中心,北京100084

出　　处：《低温物理学报》2008年第4期313-317,共5页Low Temperature Physical Letters

基　　金：国家“863”计划(编号:2006AA03Z236)资助的课题~~

摘　　要：本文利用Bi-2223/Ag高温超导带材与抗拉强度σb为700MPa的铜带进行组合,带材宽度面间采用低熔点的Sn-Ag-Cu无铅焊料进行连接,制备了C-SC-C型、SC-C-SC型(C代表铜带,SC代表高温超导带)等四种层状复合结构.研究和考察了四种结构样品在室温下的拉伸性能和弯曲性能,以及电性能等.测试结果表明:与高温超导带材相比,复合后结构的拉伸性能得到了提高;复合结构中采用两根高温超导带材后,提高了传输电流的能力.研究结果为Bi-2223/Ag高温超导带材的实际应用以及新应用结构的设计提供了参考数据和实验依据.Several laminated high temperature superconductor （HTS） tape composite structures were fabricated, jointing copper tape on the width surface of HTS tape by the low-melting-point and lead-free Sn-Ag- Cu solder. Mechanical performances including stretching and bending, and electrical performance were examined. The experimental results show that stretching performances of the four composite structures get improved. Furthermore, after using the two layers of HTS tape, critical current values of structures can get increased. It provides data reference and experimental foundation for practical applications of HTS tape and the design of new applied structures.

关 键 词：BI-2223 高温超导带材 机械性能 临界电流 

分 类 号：TM26[一般工业技术—材料科学与工程]