Study on phase transformation and microstructure development of Yb alpha-SiAlON ceramics prepared by pressureless sintering

authors	Liu, GH; Chen, KX; Zhou, HP; Ferreira, JMF
editors	Zhong, ZY; Saka, H; Kim, TH; Holm, EA; Han, YF; Xie, XS
nationality	International
journal	PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5
author keywords	Yb alpha-SiAlON; pressureless sintering; phase transformation; microstructure
keywords	CA
abstract	In this paper, single-phase Yb alpha-SiAlON ceramics were prepared by pressureless sintering and the densification, phase transformation as well as microstructure development were studied. It was demonstrated that the phase transformation could be completed at 1700 degrees C and elevated temperature was beneficial to grain growth. Additionally, effect of the addition of seed crystals prepared by combustion synthesis was discussed. From the experimental results, it was found that the added seed crystals facilitated the phase transformation and improved the microstructure development, resulting in the formation of elongated grains.
publisher	TRANS TECH PUBLICATIONS LTD
issn	0255-5476
isbn	0-87849-960-1
year published	2005
volume	475-479
beginning page	1271
ending page	1274
web of science category	Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category	Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier	WOS:000227494701097