MICROSTRUCTURE OF THE CERAMIC IN SUPERCONDUCTING BI-2223 COMPOSITE TAPES AFTER BENDING STRAIN CYCLES

Authors
LAHTINEN M PAASI J HAN ZH SARKANIEMI J
Citation
M. Lahtinen et al., MICROSTRUCTURE OF THE CERAMIC IN SUPERCONDUCTING BI-2223 COMPOSITE TAPES AFTER BENDING STRAIN CYCLES, Physica. C, Superconductivity, 277(3-4), 1997, pp. 238-242
Citations number
7
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
277
Issue
3-4
Year of publication
1997
Pages
238 - 242
Database
ISI
SICI code
0921-4534(1997)277:3-4<238:MOTCIS>2.0.ZU;2-R
Abstract
Studying the microstructure of the ceramic in superconducting Bi-2223 based composite tapes after bending strain cycles, it was found that i n Ag-sheathed tapes with a well-textured ceramic crack propagation too k place preferentially in the tape plane, whereas in tapes with less t exture the cracks were oriented perpendicular to the filament, A possi ble explanation for the unexpected crack propagation in the tape plane is given in terms of anisotropy in the elastic properties of the Bi-2 223 ceramic.