Effect of hot pressing on the weak-link behaviour of Ag clad Bi based superconducting tapes

被引：17
作者：
Liu, HK
Horvat, J
Hu, QY
Yu, DK
Dou, SX
机构：
[1] Ctr. Superconducting Electron. Mat., University of Wollongong, Wollongong
来源：
PHYSICA C | 1996年 / 259卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(96)00047-0
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effect of hot pressing on the critical current density of Ag clad Bi based superconducting multifilamentary tapes was investigated. The critical current density for the hot-pressed tapes was significantly improved in comparison with the cold-pressed tapes. The enhancement of J(c) is essentially attributable to the improvement of strong links between grains. The hot pressing has also resulted in a very smooth interface between Ag and oxide core, reducing the random growth of grains into silver sheath. The ratio of I-c through strong links to the total I-c increases from 21% for cold-pressed tapes to 33% for the hot-pressed ones. The SEM images show that the hot-pressed multifilamentary tape has higher density and better grain alignment than those without hot pressing.
引用
收藏
页码：187 / 192
页数：6
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