Structure, thermodynamic properties and cooling rate of glasses

The concepts of the thermodynamics of irreversible processes are used in order to derive expressions describing the dependence of the structure and thermodynamic properties of glasses on cooling rate. The temperature dependence of the thermodynamic potential of a frozen-in system is calculated and e...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1991-03, Vol.129 (1-3), p.266-275
Main Authors: Gutzow, I., Dobreva, A.
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals. Metallurgy
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
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Summary:The concepts of the thermodynamics of irreversible processes are used in order to derive expressions describing the dependence of the structure and thermodynamic properties of glasses on cooling rate. The temperature dependence of the thermodynamic potential of a frozen-in system is calculated and estimates are made for the deviation from equilibrium in vitrified melts. The theoretical results thus obtained are compared with experimental evidence on the thermodynamic properties of typical glass-forming substances and for vitreous metallic alloys. In this way basic kinetic and thermodynamic properties of the vitrification process are determined.
ISSN:0022-3093
1873-4812
DOI:10.1016/0022-3093(91)90103-D