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Lookup NU author(s): Emeritus Professor Derek Thompson
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In situ growth of elongated α-sialon grains has been studied in Li-α-sialon ceramics. The morphology of α-sialon grains in mainly determined by the overall composition, with low m and high n values promoting the anisotropic grain growth of α-sialon needles with even more pronounced effects at higher sintering temperatures and pressures. β-Si3N4 starting powder can also facilitate the growth of elongated α-sialon grains since it reduces the number of sites where α-sialon grains can nucleate. The effects of processing parameters on the growth of elongated α-sialon grains were examined. For single-phase α-sialon starting compositions, increases in sintering time do not promote the elongated (or even equiaxed) growth of α-sialon grains after the formation of α-sialon is complete. © 2001 Elsevier Science Ltd. All rights reserved.
Author(s): Yu ZB, Thompson DP, Bhatti AR
Publication type: Article
Publication status: Published
Journal: Journal of the European Ceramic Society
Year: 2001
Volume: 21
Issue: 13
Pages: 2423-2434
ISSN (print): 0955-2219
ISSN (electronic): 1873-619X
Publisher: Elsevier Ltd
URL: http://dx.doi.org/10.1016/S0955-2219(01)00197-2
DOI: 10.1016/S0955-2219(01)00197-2
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