FABRICATION, CURRENT-DENSITY AND STRAIN DEPENDENCE OF SINTERED, AG-SHEATHED BI-SR-CA-CU-O (2212) SINGLE FILAMENT AND MULTIFILAMENTARY TAPE SUPERCONDUCTORS

被引：25

作者：

SCHWARTZ, J ^{[1
]}

SEKINE, H ^{[1
]}

ASANO, T ^{[1
]}

KURODA, T ^{[1
]}

INOUE, K ^{[1
]}

MAEDA, H ^{[1
]}

机构：

[1] NATL RES INST MET,TSUKUBA,JAPAN

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期

基金：

美国国家科学基金会; 日本科学技术振兴机构;

关键词：

D O I：

10.1109/20.133410

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Bi2Sr2CaCu2O(x) (2212) superconductors have been fabricated into silver(Ag)-sheathed single filament, multifilament and Wire-in-Tube (WIT) tapes. Calcining, annealing and sintering conditions have been studied to improve the critical current density J(c)(B,4.2K) at high magnetic field (B). The optimization is discussed and resulting properties are related to the microstructure of the superconductor. Superconductor J(c)-approximately-1-5 x 10(4) A/cm2 has been obtained in fields >20 Teslas at 4.2K in both single and multifilamentary tapes. Furthermore, the dependence of J(c) upon mechanical strain (epsilon) has been investigated. No pre-straining of the superconductor occurred in any of the samples, most likely due to yielding of the Ag sheath. Although strain resistance was good in all samples, the WIT tapes were significantly more resistant than the single filament tapes. For the single filament tapes, epsilon-irr-approximately-0.24%, while for the WIT tapes, epsilon-irr-approximately-0.36%, where epsilon-irr is the irreversible strain limit.

引用

页码：1247 / 1249

页数：3

共 5 条

[1] NORMAL ZONE PROPAGATION IN ADIABATIC SUPERCONDUCTING MAGNETS OVER THE TEMPERATURE-RANGE 4.2-80-K [J].