Use of the Adam‐Gibbs Equation in the Analysis of Structural Relaxation
- 1 July 1984
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 67 (7) , 504-511
- https://doi.org/10.1111/j.1151-2916.1984.tb19643.x
Abstract
Narayanaswamy's model of structural relaxation has been shown to provide an excellent description of the behavior of a variety of glasses. In the standard formulation, the relaxation time, τ is represented by the Arrhenius equation, with the activation energy partitioned between the temperature and Active temperature. That form for τ is successful, but lacks theoretical justification. In this paper, the Adam‐Gibbs equation is shown to describe accurately both τ and the viscosity of NBS 710 (alkali lime silicate) glass. This equation is expected to be accurate over a wider range of temperature and Active temperature than the Arrhenius equation.Keywords
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