EFFECT OF CALCINING CONDITIONS ON THE FORMATION OF THE HIGH-T(C) BI-PB-SR-CA-CU-O PHASE

被引：7

作者：

KAO, CH ^{[1
]}

CHIU, YD ^{[1
]}

DUNG, SL ^{[1
]}

LEE, LC ^{[1
]}

LEI, TS ^{[1
]}

WU, MK ^{[1
]}

机构：

[1] NATL TAIWAN UNIV, DEPT MECH ENGN, TAIPEI, TAIWAN

来源：

MATERIALS LETTERS | 1994年 / 20卷 / 1-2期

关键词：

D O I：

10.1016/0167-577X(94)90153-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Starting BPSCCO powders with various amounts of the high-T(c) phase were prepared by different calcining conditions. A low-T(c) phase was dominant in a powder calcined at 800-degrees-C for 10 h along with a small amount of a very low-T(c) phase and some non-superconducting phases but no high-T(c) phase was present. When this powder was reheated at 853-degrees-C, the high-T(c) phase was formed. The volume fraction of the high-T(c) phase increased with increasing reheating time at 853-degrees-C. On the other hand, T(c) of the sample calcined at 800-degrees-C for 10 h and reheated at 853-degrees-C for 24 h and then sintered at 835-degrees-C for additional 48 h was 104 K with a sharp transition.

引用

页码：83 / 86

页数：4

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