UNSPECIFIED (1997) Microstructure and properties of spodumene based Li-Si-Al-O-N glass ceramics. BRITISH CERAMIC TRANSACTIONS, 96 (4). pp. 141-148. ISSN 0967-9782

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Abstract

Glasses and glass ceramics in the Li-Si-Al-O-N system were prepared using a natural mineral resource, and the microstructures and mechanical and thermal properties examined. The dominant phases that formed in the Li oxynitride glass ceramics were beta-quartz(ss) and beta-spodumene(ss), and these were believed to develop with equiaxed and acicular grain morphologies respectively. Silicon oxynitride Si2N2O and X-phase Si3Al6O12N2 formed as minor phases. Nanoindentation was used to assess the hardness and elastic moduli of the Li-Si-Al-O-N materials and both parameters were observed to increase with increasing nitrogen content. Thermal expansion measurements revealed that the low expansion characteristics of mineral derived beta-quartz(ss) and beta-spodumene(ss) were generally retained when nitrogen was introduced into the Li2O-Al2O3-SiO2 system. (C) 1997 The Institute of Materials.

Item Type:	Journal Article
Subjects:	T Technology > TP Chemical technology
Journal or Publication Title:	BRITISH CERAMIC TRANSACTIONS
Publisher:	INST MATERIALS
ISSN:	0967-9782
Date:	1997
Volume:	96
Number:	4
Number of Pages:	8
Page Range:	pp. 141-148
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/16172

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