Investigation of the initial stages of processing Bi-2223 multifilamentary tapes by analytical electron microscopy

被引：9

作者：

Holesinger, TG

Ayala, A

Baurceanu, RM

Maroni, VA

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Argonne Natl Lab, Argonne, IL 60439 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2001年 / 11卷 / 01期

关键词：

high temperature superconductor; lead; liquid phase; TEM; sintering;

D O I：

10.1109/77.919691

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Analytical transmission electron microscopy (TEM) was used to probe the formation of liquid phases in multifilamentary Bi-2223 tapes. Silver was found to nucleate small amounts of liquid phase early in the processing. However, liquid formation was primarily associated with the 14-24 AEC and time at temperature (induction period) was the major factor determining the amounts of lead-rich liquid phase formation in these tapes. The compositions of the lead-rich liquid phases were measured quantitatively. The data presented is consistent with a mechanism whereby Bi-2223 can precipitate from a liquid phase.

引用

收藏

页码：2991 / 2994

页数：4

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