COMPOSITE REACTION TEXTURED BI-2212 TWIN CURRENT LEAD STRUCTURES

被引:7
作者
WATSON, DR [1 ]
CHEN, M [1 ]
GLOWACKA, DM [1 ]
ADAMOPOULOS, N [1 ]
SOYLU, B [1 ]
GLOWACKI, BA [1 ]
EVETTS, JE [1 ]
机构
[1] UNIV CAMBRIDGE,IRC SUPERCONDUCT,CAMBRIDGE CB3 0HE,ENGLAND
关键词
D O I
10.1109/77.402669
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
Monolithic twin Bi2Sr2CaCu2Ox, (Bi-2212) conductors have been fabricated on shaped MgO-LiF, stainless steel and Macer substrates for current lead applications. The composite reaction texturing (CRT) method gives considerable flexibility in design; a composite aligned MgO whisker/Bi-2212 preform prepared by a polymer processing route can be shaped before reaction to match the critical current to the system temperature profile. Leads have been designed for conduction cooled zero field operation between 4K and 77K. At 4K the critical current density (J(c)) is in excess of 10(5) Acm(-2), at 77K J(c) is self-field limited and varies between 10(3) Acm(-2) and 3.10(3) Acm(-2). Leads 10-20cm in length were designed for currents of 200 and 1000A with thermal conduction losses;of less than 0.05W and flexural loads greater than 10N.
引用
收藏
页码:801 / 804
页数:4
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