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

2 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

Fingerprint

spherulites
Metastable phases
Crystallization
Glass
glass
Barium
Crystal growth
Silicates
Raman spectroscopy
Precipitates
Nucleation
Heat treatment
crystallization
Crystalline materials
Transmission electron microscopy
barium
crystal growth
precipitates
silicates
heat treatment

Keywords

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

ASJC Scopus subject areas

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

Cite this

Formation of spherulite and metastable phase in stoichiometric Ba 2Si3O8 glass. / Takahashi, Yoshihiro; Masai, Hirokazu; Osada, Minoru; Ihara, Rie; Fujiwara, Takumi.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 118, No. 1382, 10.2010, p. 955-958.

Research output: Contribution to journalArticle

Takahashi, Yoshihiro ; Masai, Hirokazu ; Osada, Minoru ; Ihara, Rie ; Fujiwara, Takumi. / Formation of spherulite and metastable phase in stoichiometric Ba 2Si3O8 glass. In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan. 2010 ; Vol. 118, No. 1382. pp. 955-958.
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AU - Takahashi, Yoshihiro

AU - Masai, Hirokazu

AU - Osada, Minoru

AU - Ihara, Rie

AU - Fujiwara, Takumi

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N2 - 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.

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