Effect of starting precursor powders on microstructural development and critical current density properties of BSCCO 2223 tapes

被引：7
|
作者：
Ko, JW
Yoo, JM
Kim, YK
Oh, KH
Choe, SJ
Chung, H
机构：
[1] Korea Inst Machinery & Mat, Dept Mat Engn, Chang Won 641010, South Korea
[2] Iljin Elect Co, Hwasung 445976, South Korea
[3] Ajou Univ, Dept Mol Sci & Technol, Suwon 442749, South Korea
来源：
CRYOGENICS | 2003年 / 43卷 / 10-11期
关键词：
Bi-2223; phased; precursor powders; microstructure; critical current density; SUPERCONDUCTING TAPES; PHASE-FORMATION; BI-2223/AG TAPES; PARTICLE-SIZE; LEAD; PLATELETS; MECHANISM; EVOLUTION; KINETICS;
D O I：
10.1016/S0011-2275(03)00161-9
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Bi-2223/Ag tapes with different lead content (Pb = 0.2-0.4) powders were fabricated. The microstructural development and J(c) properties were studied with starting precursor powder prepared in different conditions. The experimental results indicate that the variations of lead content extremely influence the reactivity of precursor powders, which is closely related to the formation rate of 2223 phase, microstructure and J(c) values of Bi-2223/Ag tapes. In addition, the particle size distribution of precursor powders has a large effect on the transport properties. By optimizing these powder parameters, J(c) values above 60,000 A/cm(2) (77 K, 0 T) in short tapes were achieved. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：549 / 553
页数：5
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