Thermal property of BaO-TiO2-GeO2 glass and the crystallization behavior

Yoshiki Yamazaki, Hirokazu Masai, Yoshihiro Takahashi, Takumi Fujiwara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Correlation between surface crystallization behavior of BaO-TiO 2-GeO2 (BTG) glass and the thermal stability parameter measured by Differential Thermal Analysis (DTA) was examined. We have proposed normalized thermal stability ΔTnorm of the BTG glass using crystallization temperature (Tx), glass transition temperature (Tg), and melting temperature (Tm). It was found that surface crystallization occurred in the BTG glass possessing ΔTnorm (= (Tx-Tg)/Tm) value larger than 0.08. Compared ΔTnorm value of bulk state with that of powdered state, it has been revealed that Ba2TiGe2O8 was precipitated independently of thermal stabilities whereas BaTiGe 3O9 or BaGe4O9 was precipitated in precursor glasses possessing high surface stability.

Original languageEnglish
Title of host publicationElectroceramics in Japan XIII
PublisherTrans Tech Publications Ltd
Pages179-182
Number of pages4
ISBN (Print)9780878492640
DOIs
Publication statusPublished - 2010

Publication series

NameKey Engineering Materials
Volume445
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Keywords

  • Crystallization of glass
  • Differential thermal analysis
  • Thermal stability

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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