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

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

*この研究の対応する著者

研究成果: Article査読

8 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)955-958
ページ数4
ジャーナルNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
118
1382
出版ステータスPublished - 2010 10月
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学
  • 化学 (全般)
  • 凝縮系物理学

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