Role of nitrides in oxynitride glasses and glass-ceramics: An NMR investigation

Nordmann, Astrid and Cheng, Yi-Bing and Smith, Mark E. (1996) Role of nitrides in oxynitride glasses and glass-ceramics: An NMR investigation. Chemistry of Materials, 8 (10). pp. 2516-2522. ISSN 0897-4756. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1021/cm960238f

Abstract

Crystallization of nitrogen-containing glasses based on the Li2O-Al2O3-SiO2 system produces materials comprised of beta-quartz(ss) and beta-spodumene(ss), with minor amounts of X-phase (Si3Al6O12N2) and silicon oxynitride (Si2N2O). X-ray diffraction and Si-29 and Al-27 magic-angle spinning NMR spectroscopy have been used to study the effect of nitrogen on the thermal stability and atomic distribution of beta-quartz(ss), to monitor the evolution of secondary phases in the Li-Si-Al-O-N system, and to compare the differences between using Si3N4 and AlN as the nitrogen source. Samples containing less than or equal to 4wt % nitrogen and heat-treated at temperatures up to 1300 degrees C were analyzed by XRD to determine their crystallinity and phase content, whereas NMR was able to more clearly elucidate the atomic coordination and Si, Al distribution in the crystal structure.

Item Type: Article
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: F.D. Zabet
Date Deposited: 11 Jun 2009 10:19
Last Modified: 09 Jun 2014 10:25
Resource URI: http://kar.kent.ac.uk/id/eprint/18706 (The current URI for this page, for reference purposes)
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