Reactivity of RE-Ba-Cu-O superconductors with water

被引：3

作者：

Nariki, S ^{[1
]}

Murakami, M ^{[1
]}

机构：

[1] ISTEC, Superconduct Res Lab, Minato Ku, Tokyo 1050023, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷

关键词：

water corrosion; melt processing; Y-Ba-Cu-O; Gd-Ba-Cu-O;

D O I：

10.1016/S0921-4534(02)01540-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the stability of Y-Ba-Cu-O and Gd-Ba-Cu-O against water. A variation in the superconducting and field trapping properties was measured before and after exposure to water. The YBa2Cu3O7 and GdBaCu3O7 powders were decomposed by the reaction with water in a short period. For sintered samples, grain boundaries were preferentially damaged with water. Melt-textured samples exhibited better corrosion resistance against water in that the deterioration mainly occurred at cracks. A comparison between melt-textured Gd-Ba-Cu-O samples with and without Ag addition showed that a reduction in the amount of cracking through Ag addition was effective in preventing the damage by water corrosion. The trapped field of melt-textured Gd-Ba-Cu-O with Ag addition did not deteriorate even after exposure to boiling water for 3 It. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：769 / 773

页数：5