Evolution of core density of Ag-Clad Bi-2223 tapes during process

被引：11

作者：

Jiang, J

Cai, XY

Chandler, JG

Rikel, MO

Hellstrom, EE

Parrella, RD

Yu, DA

Li, Q

Rupich, MW

Riley, GN

Larbalestier, DC

机构：

[1] Univ Wisconsin, Ctr Appl Superconduct, Madison, WI 53706 USA

[2] Amer Superconductor Corp, Westborough, MA 01581 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2001年 / 11卷 / 01期

关键词：

(Bi; Pb)(2)Sr2Ca2Cu3Ox tape; porosity; mass density; critical current and microstructure;

D O I：

10.1109/77.919833

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：

The porosity and its effect on critical current density J(c) of Ag-clad (Bi,Pb)(2)Sr2Ca2Cu3Ox (Bi-2223) tapes throughout Important steps In their thermomechanical treatment was investigated by using mass density measurement, microstructural observation, and superconducting property characterization. The relative mass density of the final filament for 19 filament tape was less than 75%, even though the J(c) is similar to 50 kA/cm(2) (77K 0T), The mass density in monofilaments reached 90%, because retrograde densification during the first heat treatment (HT1) was less or even absent. Well textured Bi-2223 grain growth could result in a significant densification during the first HT in the monofilament composite. Our results hint at considerable variability in this important property of Bi-2223 tape.

引用

页码：3561 / 3564

页数：4