Phase separation of borosilicate glass containing sulfur

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2 Citations (Scopus)

Abstract

A 10Na2S·30B2O3·60SiO 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 S2- anion and polysulfide S-2and S-3 anions, and SiS and BS 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.

Original languageEnglish
Pages (from-to)603-607
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume118
Issue number1379
Publication statusPublished - Jul 2010

Fingerprint

Borosilicate glass
borosilicate glass
Sulfur
Phase separation
sulfur
Anions
Negative ions
anions
Glass
glass
polysulfides
Spinodal decomposition
Polysulfides
Borates
borates
heat treatment
Sodium
Heat treatment
sodium
Ions

Keywords

  • Borosilicate glass
  • Chemical state of sulfur
  • Glass structure
  • Phase separation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry
  • Chemistry(all)
  • Condensed Matter Physics

Cite this

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title = "Phase separation of borosilicate glass containing sulfur",
abstract = "A 10Na2S·30B2O3·60SiO 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 S2- anion and polysulfide S-2and S-3 anions, and SiS and BS 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 = "Borosilicate glass, Chemical state of sulfur, Glass structure, Phase separation",
author = "Keiji Saiki and Shinichi Sakida and Yasuhiko Benino and Tokuro Nanba",
year = "2010",
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journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
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publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",
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TY - JOUR

T1 - Phase separation of borosilicate glass containing sulfur

AU - Saiki, Keiji

AU - Sakida, Shinichi

AU - Benino, Yasuhiko

AU - Nanba, Tokuro

PY - 2010/7

Y1 - 2010/7

N2 - A 10Na2S·30B2O3·60SiO 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 S2- anion and polysulfide S-2and S-3 anions, and SiS and BS 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.

AB - A 10Na2S·30B2O3·60SiO 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 S2- anion and polysulfide S-2and S-3 anions, and SiS and BS 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.

KW - Borosilicate glass

KW - Chemical state of sulfur

KW - Glass structure

KW - Phase separation

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