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ID 46892
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Author
Saiki, Keiji
Abstract
A 10Na(2)S·30B(2)O(3)·60SiO(2) (mol %) glass was prepared, and the changes in glass structure and chemical state of sulfur caused by phase separation were investigated. In the as-prepared and heat-treated glasses, sulfur was present as S(2)− anion and polysulfide S(2)− and S(3)− anions, and Si–S and B–S bonds were not confirmed. A phase separation by spinodal decomposition was observed after heat-treatment, where sulfur was preferentially distributed to borate-rich phase. Even after the phase separation, formation of non-bridging oxygen was not recognized. The preferential distribution of sulfur anions in the present glass was explainable on the basis of the change in population of sodium ions, which compensated the negatively-charged sulfur anions.
Keywords
Phase separation
Borosilicate glass
Chemical state of sulfur
Glass structure
Published Date
2010-07
Publication Title
Journal of the Ceramic Society of Japan
Volume
volume118
Issue
issue1379
Publisher
The Ceramic Society of Japan
Publisher Alternative
公益社団法人日本セラミックス協会
Start Page
603
End Page
607
ISSN
1882-0743
NCID
AA12229489
Content Type
Journal Article
language
英語
Copyright Holders
©2010 The Ceramic Society of Japan. All rights reserved.
File Version
publisher
Refereed
True
DOI