Phase formation kinetics in SrO-Al2O3-SiO2-B2O3 glass

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Abstract

Phase formation in Sr-celsian glass, containing 3 wt% B2O3 (SA2SB), was investigated by using non-isothermal and isothermal kinetic analyses. While stoichiometric celsian (SA2S) glass showed two-stage crystallization of glass, from glassy state to hexacelsian and from hexacelsian to monocelsian, SA2SB glass showed direct crystallization of glass to monocelsian, resulting in considerable decrease in the temperature of monocelsian formation. The activation energy for monocelsian formation in SA2SB glass was 390 kJ/mol, which is lower than those for hexacelsian and monocelsian formation respectively in SA2S glass. The Avrami exponent of SA2SB glass was ∼2.0, indicating two-dimensional crystal growth with interface-controlled mechanism at a zero nucleation rate.

Original languageEnglish
Pages (from-to)699-703
Number of pages5
JournalJournal of Materials Science
Volume37
Issue number4
DOIs
Publication statusPublished - 2002 Feb 15

ASJC Scopus subject areas

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

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