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
相关论文
共 14 条
[1]   MECHANICAL-PROPERTIES OF HIGHLY ALIGNED YBA2CU3O7-DELTA - EFFECT OF Y2BACUOX PARTICLES [J].
GOYAL, A ;
OLIVER, WC ;
FUNKENBUSCH, PD ;
KROEGER, DM ;
BURNS, SJ .
PHYSICA C, 1991, 183 (4-6) :221-233
[2]   Melt-processed Sm-Ba-Cu-O superconductors trapping strong magnetic field [J].
Ikuta, H ;
Mase, A ;
Yanagi, Y ;
Yoshikawa, M ;
Itoh, Y ;
Oka, T ;
Mizutani, U .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1998, 11 (11) :1345-1347
[3]   Stress-strain characteristics and fracture surface morphology of (SmGd)-Ba-Cu-O bulk superconductor [J].
Katagiri, K ;
Murakami, A ;
Sato, T ;
Okudera, T ;
Sakai, N ;
Muralidhar, M ;
Murakami, M .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 378 :722-726
[4]   Fractographic observations on Sm-Ba-Cu-O bulk superconductors fractured by tensile tests [J].
Katagiri, K ;
Kasaba, K ;
Shoji, Y ;
Chiba, A ;
Tomita, M ;
Miyamoto, T ;
Murakami, M .
PHYSICA C, 2001, 357 (SUPPL. 2) :803-806
[5]   ENHANCEMENTS IN CURRENT-DENSITY AND MECHANICAL-PROPERTIES OF Y-BA-CU-O/AG COMPOSITES [J].
LEE, D ;
SALAMA, K .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1990, 29 (11) :L2017-L2019
[6]   Tensile mechanical properties of (Nd,Eu,Gd)-Ba-Cu-O bulk superconductors at room and liquid nitrogen temperatures [J].
Murakami, A ;
Katagiri, K ;
Noto, K ;
Kasaba, K ;
Shoji, Y ;
Muralidhar, M ;
Sakai, N ;
Murakami, M .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 378 :794-797
[7]   Mechanical and superconducting properties of melt grown Y123 samples with silver [J].
Nakamura, Y ;
Tachibana, K ;
Yoshida, T ;
Fujimoto, H .
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1999, 63 (09) :1089-1092
[8]  
Nariki S, 2002, AIP CONF PROC, V614, P686, DOI 10.1063/1.1472603
[9]   Mechanical properties of melt-textured Gd-Ba-Cu-O bulk with silver addition [J].
Nariki, S ;
Sakai, N ;
Tomita, A ;
Murakami, A .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 378 :779-782
[10]   Peak effect in field trapping properties of large grain Dy-Ba-Cu-O/Ag bulk superconductors [J].
Nariki, S ;
Murakami, M .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 378 :759-763
12