DIRECTIONAL SOLIDIFICATION OF YBCO RODS FOR CURRENT LEAD APPLICATIONS

被引：16
|
作者：
GRANADOS, X
PINOL, S
MARTINEZ, B
GALANTE, F
SANDIUMENGE, F
FONTCUBERTA, J
OBRADORS, X
机构：
[1] Institut de Ciència de Materials de Barcelona, CSIC, 08192 Bellaterra, Campus UAB
来源：
CRYOGENICS | 1994年 / 34卷
关键词：
D O I：
10.1016/S0011-2275(05)80196-1
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A directional solidification procedure for long rods of YBa2CU3O7 - Y2BaCuO5 composites has been developed based on a vertical Birdgman-like configuration. Single domain rods up to 10 cm in length and a section of 0.15 cm(2) can be fabricated with inductive critical currents above 10(5) A/cm(2) at 77K and zero field as measured by means of a SQUID magnetometer. Transport critical currents have been measured at 77K with pulsed current up to 800 A flowing at several angles from the a-b plane, and it is shown that no grain boundary limitations occur when supercurrent cross the a-b planes, in agreement with the observation of reduced concentration of microcracks. The applicability of these textured rods as current leads will be discussed.
引用
收藏
页码：833 / 836
页数：4
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