Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 358, Issue 11, Pages 1356-1361Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2012.03.009
Keywords
Hyperquenched glass; Annealing; Enthalpy relaxation; Glass transition; Secondary relaxation
Funding
- Danish Research Council [09-064216]
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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 mechanism 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. (C) 2012 Elsevier B.V. All rights reserved.
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