Reactive sintering and retrograde densification of bulk bismuth-based superconductors

被引：0
|
作者：
Thayer, RL
Schmidt, SR
Dorris, SE
Bullard, JW
Lanagan, MT
机构：
[1] Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA
[2] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2000年 / 83卷 / 10期
关键词：
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Densification was observed when bulk ceramic superconductors with a composition of Bi1.8Pb0.4Sr2Ca2Cu3O10+delta were sintered for short times (<4 h) near the incongruent melting temperature. The initial shrinkage of the powder compacts was correlated with the existence of a transient liquid phase. Retrograde densification, which is a decrease in density, occurred for longer sintering times and was attributed to changes in pore structure. The results provide direction for future processing of bulk bismuth-based superconductors and powder-in-tube tapes for the fabrication of long-length wire.
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页码：2365 / 2368
页数：4
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