Formation of spherulite and metastable phase in stoichiometric Ba 2Si3O8 glass

Yoshihiro Takahashi, Hirokazu Masai, Minoru Osada, Rie Ihara, Takumi Fujiwara

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We investigated the crystallization and resulting morphology of a stoichiometric barium-silicate glass Ba2Si3O8 (B2S3) using TEM observation and Raman spectroscopy. Spherical crystal growth (i.e., spherulite) of stoichiometric B2S3 phase was observed in the heat-treated glass samples, and the size of the spherulites drastically increased as the temperature increased during the heat-treatment process. It was also found that an initial precipitating phase in the precursive stage of crystallization is neither the B2S3 phase nor other crystalline phases in the BaO-SiO2 system. It was deduced that a metastable phase precipitates prior to the formation of spherulite and acts as nucleation site for the spherulite.

Original languageEnglish
Pages (from-to)955-958
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume118
Issue number1382
Publication statusPublished - 2010 Oct
Externally publishedYes

Keywords

  • Crystallization
  • Raman spectroscopy
  • Silicate glass
  • Spherulite
  • TEM observation

ASJC Scopus subject areas

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

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