ePrints

In situ growth of elongated alpha-sialon grains in Li-alpha-sialon ceramics

Lookup NU author(s): Zhengbo Yu, Emeritus Professor Derek Thompson

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

In situ growth of elongated alpha -sialon grains has been studied in Li-alpha -sialon ceramics. The morphology of alpha -sialon grains is mainly determined by the overall composition, with low m and high n values promoting the anisotropic grain growth of alpha -sialon needles with even more pronounced effects at higher sintering temperatures and pressures. beta -Si3N4 starting powder can also facilitate the growth of elongated alpha -sialon grains since it reduces the number of sites where alpha -sialon grains can nucleate. The effects of processing parameters on the growth of elongated alpha -sialon grains were examined. For single-phase alpha -sialon starting compositions, increases in sintering time do not promote the elongated (or even equiaxed) growth of alpha -sialon grains after the formation of alpha -sialon is complete. (C) 2001 Elsevier Science Ltd. All rights reserved.

Publication metadata

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

Print publication date: 01/11/2001

Online publication date: 31/08/2001

ISSN (print): 0955-2219

ISSN (electronic): 1873-619X

Publisher: Elsevier Ltd

URL: https://doi.org/10.1016/S0955-2219(01)00197-2

DOI: 10.1016/S0955-2219(01)00197-2

Altmetrics

Share