Bi-2223带材制备的高温超导电流引线  

Development of HTS current lead using Ag/Au alloy sheathed Bi-2223 tape

作　　者：张宏杰[1] 宗军 励庆孚[1] 

机构地区：[1]西安交通大学电气工程学院,西安710049 [2]北京英纳超导技术有限公司,北京100176

出　　处：《低温与超导》2006年第1期23-25,32,共4页Cryogenics and Superconductivity

基　　金：西安交通大学博士学位论文基金(DFxjtu2002-8)资助

摘　　要：为了降低沿电流引线的漏热,用于制备高温超导电流引线的B i-2223带材要求具有较低的热导率。文中介绍了低热导率银金合金B i-2223高温超导带材;给出了其热导率的测试结果;并采用该带材制造了高温超导电流引线样机。液氮条件下测试该段高温超导引线的临界电流为332A。In most superconducting magnet systems, the largest crypgenix losses are associated with the Current leads, which carry current from the room temperature power supply to the magnet. HTS materials combine low thermal conductivities with the ability to carry current without resistive loss, and so offer the possibility of reducing the refrigeration power and operational costs. This paper presents the development of a new low thermal conductivity Ag - 4at% AU alloy Sheathed Bi - 2223 tape. The performance of this low thermal conductivity Bi -2223 tape is also introduced. At the end of this paper, the prototype of HTS current lead is given- The critical current of this current lead is 332A at 77K.

关 键 词：银金合金Bi-2223带材 电流引线 高温超导 低热导率 

分 类 号：TB651[一般工业技术—制冷工程] TM262[一般工业技术—材料科学与工程]