THERMAL-STRESSES AND MICROCRACKING CAUSED BY 211 PARTICLES IN Y-BA-CU-O MELT-PROCESSED BULKS

Authors
DIKO P
Citation
P. Diko, THERMAL-STRESSES AND MICROCRACKING CAUSED BY 211 PARTICLES IN Y-BA-CU-O MELT-PROCESSED BULKS, Materials science & engineering. B, Solid-state materials for advanced technology, 53(1-2), 1998, pp. 149-153
Citations number
28
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Materials science & engineering. B, Solid-state materials for advanced technology → ACNP
ISSN journal
09215107
Volume
53
Issue
1-2
Year of publication
1998
Pages
149 - 153
Database
ISI
SICI code
0921-5107(1998)53:1-2<149:TAMCB2>2.0.ZU;2-Y
Abstract
The conditions leading to a-b microcracking in YBa2Cu3O7 (123)-Y2BaCuO 5 (211) bulks are the suject of this paper. The microstresses, introdu ced into the 123 matrix by mis-matches in thermal expansion (including the 123 lattice parameter change due to oxygen uptake) and different elastic constants of the 211 and 123 phases have been estimated. The c ritical 211 particle size for a-b microcracking, R-c211 = 0.24 mu m, h as been evaluated. (C) 1998 Elsevier Science S.A. All rights reserved.