Structural relaxation in annealed hyperquenched basaltic glasses: Insights from calorimetry

Xiaoju Guo, John C. Mauro, M. Potuzak, Yuanzheng Yue

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Abstract

The enthalpy relaxation behavior of hyperquenched (HQ) and annealed hyperquenched (AHQ) basaltic glass is investigated through calorimetric measurements. The results reveal a common onset temperature of the glass transition for all the HQ and AHQ glasses under study, indicating that the primary relaxation is activated at the same temperature regardless of the initial departure from equilibrium. The analysis of secondary relaxation at different annealing temperatures provides insights into the enthalpy recovery of HQ glasses.
Original languageEnglish
JournalJournal of Non-Crystalline Solids
Volume358
Issue number11
Pages (from-to)1356-1361
Number of pages6
ISSN0022-3093
DOIs
Publication statusPublished - 2012

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