The fast cooling/heating rate effects in devitrification of glasses. II. Crystallization kinetics

V. A. Shneidman, D. R. Uhlmann

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Abstract

An analytical description of devitrification kinetics induced by time-dependent nucleation and growth of crystallites during a quench-heating cycle is proposed. Relevant experimental situations include differential thermal analysis (DTA) or differential scanning calorimetry (DSC). The proposed description involves very few assumptions regarding the temperature dependence of various kinetic parameters, but rather employs measured values of growth rates. It is shown that the conventional description of nucleation based on the steady-state approximation, as a rule, is inapplicable for the description of the DTA/DSC experiment for experimentally reasonable quench/heating rates. The latter is confirmed by the analysis of available experimental data on o-terphenyl and lithium disilicate.

Original languageEnglish (US)
Pages (from-to)186-195
Number of pages10
JournalJournal of Chemical Physics
Volume109
Issue number1
DOIs
StatePublished - Dec 1 1998

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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