Important parameters for processing long lengths of Ag-sheathed Bi2Sr2CaCu2Ox conductors

被引：11

作者：

Hellstrom, EE ^{[1
]}

Zhang, W ^{[1
]}

机构：

[1] UNIV WISCONSIN, CTR APPL SUPERCONDUCT, MADISON, WI 53706 USA

来源：

PHYSICA B-CONDENSED MATTER | 1996年 / 216卷 / 3-4期

关键词：

D O I：

10.1016/0921-4526(95)00485-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The key issues that limit the critical current density across the entire length of long Ag-sheathed Bi2Sr2CaCu2Ox conductors are identified. They are bubbling of the Ag sheath and nonuniform distribution of nonsuperconducting phases throughout the conductor. The causes of bubbling are identified and methods to eliminate bubbling are discussed. The microstructure of Ag-sheathed conductors fully processed in atmospheres with different pO(2) are summarized. The most homogeneous microstructures are for tapes made with powder of composition 2.1:2:1:1.95 that is processed in 0.4 to 1 atm O-2.

引用

页码：252 / 254

页数：3

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