Orientation relationship and interfaces in nonfaceted-nonfaceted ZrO2(c)-CaZrO3 lamellar eutectics

Authors
Larrea, A Orera, VM Pena, JI Merino, RI
Citation
A. Larrea et al., Orientation relationship and interfaces in nonfaceted-nonfaceted ZrO2(c)-CaZrO3 lamellar eutectics, J MATER RES, 14(6), 1999, pp. 2588-2593
Citations number
28
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS RESEARCH
ISSN journal
08842914 → ACNP
Volume
14
Issue
6
Year of publication
1999
Pages
2588 - 2593
Database
ISI
SICI code
0884-2914(199906)14:6<2588:ORAIIN>2.0.ZU;2-8
Abstract
The orientation relationship and the interfaces of ZrO2(c)-CaZrO3 unidirect ional solidified eutectics have been investigated by means of electron diff raction and transmission electron microscopy (TEM). In contrast to previous studies on lamellar oxide-oxide systems, neither a constant orientation re lationship between contiguous lamellae nor low-index interfaces are observe d in this eutectic. As for metals and plastic crystals, it displays incoher ent interfaces and nonfaceted growth. This unusual behavior is discussed in terms of entropy of fusion and related to the presence of oxygen vacancies in the ZrO2(c) phase.