Evolution of core density of Ag-Clad Bi-2223 tapes during process

Citation
J. Jiang et al., Evolution of core density of Ag-Clad Bi-2223 tapes during process, IEEE APPL S, 11(1), 2001, pp. 3561-3564
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
1051-8223 → ACNP
Volume
11
Issue
1
Year of publication
2001
Part
3
Pages
3561 - 3564
Database
ISI
SICI code
1051-8223(200103)11:1<3561:EOCDOA>2.0.ZU;2-0
Abstract
The porosity and its effect on critical current density J(c) of Ag-clad (Bi ,Pb)(2)Sr2Ca2Cu3Ox (Bi-2223) tapes throughout Important steps In their ther momechanical treatment was investigated by using mass density measurement, microstructural observation, and superconducting property characterization. The relative mass density of the final filament for 19 filament tape was l ess than 75%, even though the J(c) is similar to 50 kA/cm(2) (77K 0T), The mass density in monofilaments reached 90%, because retrograde densification during the first heat treatment (HT1) was less or even absent. Well textur ed Bi-2223 grain growth could result in a significant densification during the first HT in the monofilament composite. Our results hint at considerabl e variability in this important property of Bi-2223 tape.