高温超导Bi-2223线材宏观缺陷对载流能力的影响  

The Influence of Macroscopic Defects On the Critical Current of HTS Bi-2223 Tapes

作　　者：赵斌[1] 

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471023

出　　处：《材料开发与应用》2012年第3期10-12,共3页Development and Application of Materials

摘　　要：本文对国内某公司高温Bi-2223超导线材的典型宏观缺陷进行了观察,用EDS对缺陷成分进行了分析,并测试了缺陷处临界电流Ic值,结果表明,点缺陷和鼓泡两种典型缺陷都使Bi-2223超导线材缺陷处临界电流值出现了衰减,在点缺陷处Zr元素出现了偏析。In this paper,the macroscopic defects of the domestic commercial HTS Bi-2223 tapes has been studied by microstructural observations and EDS analysis,and their effects on the critical currentic of the HTS Bi-2223 tapes were also investigated.The results showed that both point defect and bubbles cause the decrease of the Ic.The EDS results reveal that Zr segregate in the point defect.

关 键 词：BI-2223 线材缺陷 鼓泡 偏析 高温超导 

分 类 号：TG304[金属学及工艺—金属压力加工]