SUPERCONDUCTING AND STRUCTURAL-PROPERTIES OF PLASMA SPRAYED Y-BA-CU-O LAYERS DEPOSITED ON METALLIC SUBSTRATES

被引：2
|
作者：
HEMMES, H
JAGER, D
SMITHERS, M
VANDERVEER, J
STOVER, D
ROGALLA, H
机构：
[1] FORSCHUNGSZENTRUM JULICH,INST ANGEW WERKSTOFFORSCH,W-5170 JULICH,GERMANY
[2] STICHTING GEAVANCEERDE METAALKUNDE,HENGELO,NETHERLANDS
来源：
CRYOGENICS | 1993年 / 33卷 / 03期
关键词：
Y-BA-CU-O; CRITICAL CURRENTS; STRUCTURE;
D O I：
10.1016/0011-2275(93)90050-X
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The properties of plasma sprayed Y-Ba-Cu-O coatings deposited on metallic substrates are studied. Stainless steel, nickel steels and pure nickel are used as substrate. Y-Ba-Cu-0 deposited on stainless steel and nickel steel reacts with the substrate. This interaction can be suppressed by using an yttria-stabilized zirconia (YsZ) diffusion barrier. However, after heat treatment the Y-Ba-Cu-0 layers on YsZ show cracks perpendicular to the surface. As a result the critical current density is very low. The best results are obtained for Y-Ba-Cu-0 deposited on pure nickel; here no cracks perpendicular to the surface are observed. The critical current increases with the anneal temperature but annealing for longer than 1 0 h does not seem to improve the superconducting properties any further.
引用
收藏
页码：302 / 307
页数：6
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