Effects of Dy2BaCuO5 contents on microstructure and mechanical strength of Ag-added Dy-Ba-Cu-O bulk superconductors

被引：29
|
作者：
Nariki, S
Sakai, N
Murakami, M
Hirabayashi, I
机构：
[1] ISTEC, Supercond Res Lab, Koto Ku, Tokyo 1350062, Japan
[2] Shibaura Inst Technol, Minato Ku, Tokyo 1088548, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 412卷
关键词：
melt-textured bulk; mechanical strength; microstructure; DyBaCu3Oy; Dy2BaCuO5;
D O I：
10.1016/j.physc.2004.01.084
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigated the microstructure and mechanical strength of Ag-added DyBa2Cu3Oy (Dy123) bulk superconductors with various Dy2BaCuO5 (Dy211) contents. Single-grain Dy123 bulk samples 32 min in diameter with the addition of 5-40 mol% of Dy211 and 10 wt.% of Ag2O were fabricated in air. The sample with 5 mol% Dy211 contained many macro-cracks in the ab-plane. The amount of cracks decreased with increasing Dy211 content. Three-point bending tests were performed at room temperature to measure the mechanical properties. The average bending strength of the sample with 5 mol% Dy211 was 73 MPa. The strength was improved to 95 MPa with an addition of 40 mol% Dy211. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：651 / 656
页数：6
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