Crystallization and Morphology of Glassy Sanbornite

Abstract:

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We investigated the crystallization and resulting morphology of a stoichiometric barium-silicate glass 1BaO-2SiO2 (glassy sanbornite) by using transmission electron microscope and Raman spectroscopy. A crystalline aggregate structure consisting of a Ba5Si8O21 phase (trunk) and a β-BaSi2O5 phase (branch) was observed in the heat-treated glassy sanbornite. The Ba-richer phase of Ba5Si8O21 precipitated prior to the formation of the stoichiometric β-BaSi2O5 phase, suggesting the presence of the region in which the Ba ions are enriched or cohesively distributed. A considerable structural similarity between the glassy sanbornite and the Ba5Si8O21 phase was also suggested in this study.

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Periodical:

Edited by:

Chazono Hirokazu, Fujihara Shinobu, Katayama Keiichi, Masumoto Hiroshi, Mizoguchi Teruyasu, Osada Minoru, Shinozaki Kazuo and Takeda Hiroaki

Pages:

301-304

DOI:

10.4028/www.scientific.net/KEM.485.301

Citation:

Y. Takahashi et al., "Crystallization and Morphology of Glassy Sanbornite", Key Engineering Materials, Vol. 485, pp. 301-304, 2011

Online since:

July 2011

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$35.00

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