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Celsian formation in Si3N4–Ba0.75Sr0.25Si2Al2O8 composites

Authors :
Zhang Zhiguo
Liu Limeng
Yu Jie
Zhang Haijiao
Ye Feng
Source :
Scripta Materialia. 60:463-466
Publication Year :
2009
Publisher :
Elsevier BV, 2009.

Abstract

The formation of monoclinic celsian in Ba0.75Sr0.25Al2Si2O8 (BSAS) sol–gel glass powder and in 50 wt.% Si3N4 particle-reinforced BSAS composites fabricated by a low-temperature hot pressing was investigated. Results indicated that celsian formation depended on the polymorphs of the Si3N4. Hexacelsian to celsian transformation was impeded when the α- to β-Si3N4 phase transformation occurred.

Details

ISSN :
13596462
Volume :
60
Database :
OpenAIRE
Journal :
Scripta Materialia
Accession number :
edsair.doi...........eb4fe31b3454266a2af69c1a3a07a785