Phase compositions and microstructural characteristics of solidified Al2O3-rich spinel solid solution/YAG composite

Authors
Wang, SQ Akatsu, T Tanabe, Y Yasuda, E
Citation
Sq. Wang et al., Phase compositions and microstructural characteristics of solidified Al2O3-rich spinel solid solution/YAG composite, J EUR CERAM, 20(1), 2000, pp. 39-43
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN journal
09552219 → ACNP
Volume
20
Issue
1
Year of publication
2000
Pages
39 - 43
Database
ISI
SICI code
0955-2219(200001)20:1<39:PCAMCO>2.0.ZU;2-6
Abstract
The phase compositions and microstructures of an Al2O3-rich spinel solid so lution (MA(ss))-YAG composite were investigated by conventional solidificat ion. A binary eutectic system of YAG-MA(ss) exhibiting changed eutectic tem perature was proven to exist in the YAG-spinel-alumina ternary phase region . A YAG-MA(ss) eutectic-like composite was obtained by controlled cooling p rocess. It was found that metastable phase, YAlO3, was formed during rapid solidification of the YAG-MA(ss) composite from an annealing temperature of 1795 degrees C. When reheating the as-solidified YAlO3-MA(ss) composite at 1500 degrees C, a YAG-MA(ss) composite with fine-grained YAG phase was obt ained. (C) 1999 Elsevier Science Ltd. All rights reserved.