Effect of Nd422 addition on the mechanical properties of Nd-Ba-Cu-O bulk superconductors

被引：7
作者：
Matsui, M
Sakai, N
Murakami, M
机构：
[1] Int Superconduct Technol Ctr, Superconduct Res Lab, Minato Ku, Tokyo 1050023, Japan
[2] Railway Tech Res Inst, Kokubunji, Tokyo 1858540, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 384卷 / 03期
关键词：
mechanical property; Nd422; addition; bulk; Nd-Ba-Cu-O;
D O I：
10.1016/S0921-4534(02)01994-9
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We studied the mechanical properties of Ag2O-doped Nd-Ba-Cu-O bulk superconductors with different initial compositions grown in 1%O-2-Ar atmosphere. The average tensile strength increased with increasing Nd4Ba2Cu2O10 (Nd422) content. The sample with the composition of Nd123:Nd422 = 10:2.5 exhibited the average strength of 56.8 MPa. Furthermore, the Weibull coefficient of this sample exceeded 8. Such improvement is ascribed to the fact that Nd422 particles can suppress the propagation of microcracks perpendicular to a-b planes. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：391 / 398
页数：8
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