Effects of technical parameters on the phase composition and microstructure of Yb alpha-sialon prepared by combustion synthesis
authors Liu, GH; Chen, KX; Zhou, HP; Ning, XS; Ferreira, JMF
editors Pan, W; Gong, JH; Ge, CC; Li, JF
nationality International
journal HIGH-PERFORMANCE CERAMICS III, PTS 1 AND 2
author keywords Yb alpha-sialon; combustion synthesis; elongated grains
keywords SILICON-NITRIDE; CERAMICS; CRYSTALS
abstract In this paper, Yb alpha-sialon powders with elongated grains have been prepared by combustion synthesis. The effects of diluents, nitrogen pressure, adding alpha-sialon seeds and NH4F on the phase transformation and microstructure development of the samples are discussed systematically. The experimental results show that the addition of diluents, proper nitrogen pressure and additive NH4F can facilitate the nitridation of Si. It was also found that the added alpha-sialon seeds and NH4F are beneficial to the nucleation and growth of elongated grains.
publisher TRANS TECH PUBLICATIONS LTD
issn 1013-9826
isbn 0-87849-959-8
year published 2005
volume 280-283
beginning page 1237
ending page 1240
web of science category Materials Science, Ceramics; Materials Science, Composites
subject category Materials Science
unique article identifier WOS:000227051400299
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