On the phase formation in Ag and AgMg sheathed BSCCO (2223) tapes
On the phase formation in Ag and AgMg sheathed BSCCO (2223) tapes
复制标题
关于 Ag 和 AgMg 护套 BSCCO (2223) 带材中的相形成
DOI：
10.1109/77.620834
复制
发表时间：
1997
影响因子：
1.8
通讯作者：
M. Rikel
中科院分区：
文献类型：
--
作者：
W. Goldacker;E. Mossang;M. Quilitz;M. Rikel
具有分散硬化的AgMg护套的BSCCO带具有优异的机械性能，但通常仅达到Ag护套参考带的临界电流的约70-80%。研究了19个Ag和AgMg包层带材在两个退火步骤中I/sub c/和（2223）相含量的温度依赖性，发现了反应动力学和最终相含量的特征差异，详细表征了AgMg包层的性质，确定了带材退火过程中的边界条件，给出了第一个迹象，改变了灯丝与退火气氛之间的氧交换，对相形成动力学和相图移动有明显的影响。
BSCCO tapes with dispersion hardened AgMg sheaths possess excellent mechanical properties but reach commonly only about 70-80% of the critical currents of Ag sheathed reference tapes. Investigating the temperature dependence of I/sub c/ and the (2223) phase content for two annealing steps on 19 filamentary Ag and AgMg sheathed tapes, characteristic differences with respect to the reaction kinetics and the resulting final phase content were found. A detailed characterization of the properties of the AgMg envelope, defining the boundary condition during the tape annealing process, gives first indications, that the oxygen exchange between filament and annealing atmosphere is modified with obviously significant influence on the phase formation kinetics and phase diagram shifts.