Synthesis of β-SiAlON whiskers: dependence of uniform morphology upon preparation conditions

Hou, X. M., Yu, Z. Y., Chou, K. C. and Zhao, B. J. (2013) Synthesis of β-SiAlON whiskers: dependence of uniform morphology upon preparation conditions. Advances In Applied Ceramics, 112 3: 163-168. doi:10.1179/1743676112Y.0000000060

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Author Hou, X. M.
Yu, Z. Y.
Chou, K. C.
Zhao, B. J.
Title Synthesis of β-SiAlON whiskers: dependence of uniform morphology upon preparation conditions
Journal name Advances In Applied Ceramics   Check publisher's open access policy
ISSN 1743-6753
Publication date 2013-04
Year available 2012
Sub-type Article (original research)
DOI 10.1179/1743676112Y.0000000060
Open Access Status File (Author Post-print)
Volume 112
Issue 3
Start page 163
End page 168
Total pages 6
Place of publication Leeds, W. Yorks., United Kingdom
Publisher Maney Publishing
Collection year 2013
Language eng
Abstract ß -SiAlON whiskers with uniform morphology were prepared using reaction sintering method under different conditions. The effect of preparing conditions on the morphology of ß -SiAlON whiskers was systematically studied by SEM, XRD, TEM and HRTEM. The results showed that single crystalline ß -SiAlON whiskers with uniform morphology were successfully fabricated at 1773 K for 6 h under flowing nitrogen atmosphere. The well synthesised whiskers were of several hundreds of nanometres in diameter and a few hundreds of micrometres in length. Although the morphology and its size distribution are mainly determined by the reaction temperature and holding time, they can also be tailored by controlling the reaction atmosphere. The ratio of staring materials has no significant influence on the morphology of ß -SiAlON whiskers. The growth of ß -SiAlON whiskers follows a vapour–solid mechanism, and the formation of the belt-like whiskers is attributed to an anisotropic growth at the early nucleation/growth stage.
Keyword ß-SiAlON whiskers
Synthesis parameters
Uniform morphology
Reaction sintering
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Appeared or available online: 17 October 2012

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2013 Collection
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Created: Fri, 15 Feb 2013, 19:32:17 EST by Dr Baojun Zhao on behalf of School of Chemical Engineering