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

Author

Holesinger, Terry G. ; Ayala, Alicia ; Baurceanu, Ruxandra M. ; Maroni, Victor A.

Author_Institution

Los Alamos Nat. Lab., NM, USA

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

2991

Lastpage

2994

Abstract

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

Keywords

bismuth compounds; calcium compounds; high-temperature superconductors; lead compounds; multifilamentary superconductors; sintering; strontium compounds; transmission electron microscopy; 14-24 AEC; Bi-2223 multifilamentary tapes; BiPbSrCaCuO; TEM; analytical electron microscopy; compositions; induction period; lead-rich liquid phase formation; mechanism; processing; transmission electron microscopy; Charge carrier processes; Laboratories; Multifilamentary superconductors; Scanning electron microscopy; Silver; Superconducting films; Superconducting materials; Temperature; Transmission electron microscopy; US Department of Energy;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919691

Filename

919691