Abstract
Various equations that characterize the molecular mobility in vitrifying liquids and the vitrification process are compared and analyzed. The Williams-Landel-Ferry equation is treated within the framework of the relaxation theory of vitrification, and its relationship with the equations of Bartenev and Shishkin is discussed. The Shishkin equation for the activation energy is derived on the basis of the hole theory of liquids and the concept of free volume. As a result, the empirical constants in the Williams-Landel-Ferry and Shishkin equations take on a simple physical meaning.
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Translated from Izvestiya VUZ. Fizika, Vol. 11, No. 11, pp. 93–101, November, 1968.
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Sanditov, D.S., Razumovskaya, I.V., Bartenev, G.M. et al. Theory of molecular-kinetic processes in glass melts. Soviet Physics Journal 11, 72–79 (1968). https://doi.org/10.1007/BF00816069
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DOI: https://doi.org/10.1007/BF00816069