Study of air heat treatment on Bi-2223/Ag superconducting tapes

被引：3
作者：
Guo Wei [1 ,2 ,3 ]
Zou Guisheng [1 ,2 ]
Wu Aiping [1 ,2 ]
Wang Yanjun [1 ,2 ]
Bai Hailin [1 ,2 ]
Ren Jialie [1 ,2 ]
机构：
[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
[2] Minist Educ PR China, Key Lab Adv Mfg Mat Proc Technol, Beijing 100084, Peoples R China
[3] Beijing Univ Aeronaut & Astronaut, Sch Mech Engn & Automat, Beijing 100191, Peoples R China
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 13期
基金：
北京市自然科学基金; 中国国家自然科学基金; 中国博士后科学基金;
关键词：
Bi-2223/Ag tape; Heat treatment; Critical current; EVOLUTION; TEMPERATURE; TIME;
D O I：
10.1016/j.physc.2009.04.010
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Heat treatment has been carried out on commercially available Bi-2223/Ag superconducting tape under various temperature conditions in air. The critical currents (I-c) of tape after heat treatment at different annealing temperatures were tested at the liquid-nitrogen temperature. The microstructures and phase constituents of the tapes were investigated by SEM and XRD, respectively. The results indicate that annealing temperature has a very important influence on the superconducting properties of the tapes. When the temperature is above 840 degrees C, I-c value drops dramatically. Furthermore, when the temperature reaches up to 860 degrees C, the tape loses most of its superconducting property because of the decomposition of the superconducting phase Bi-2223. (c) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：778 / 781
页数：4
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