On the Correlation between Elastic Modulus of Vitreous Solids
and Glass Transition Temperature of Melts

D. S. Sanditov*, S. Sh. Sangadiev*, and G. V. Kozlov**

* Buryat State University, ul. Smolina 24a, Ulan-Ude, Buryat Republic, 670000 Russia
** Kabardino-Balkar State University, ul. Chernyshevskogo 173, Nalchik, 360004 Russia

Received January 28, 1998

Abstract—The ratio between the glass transition temperature and the elastic modulus T_g/E for vitreous systems
of identical structural types is a constant and is primarily determined by the limiting root-mean-square displace-
ment of a kinetic unit from the center of a cell. An idea is developed that, at the softening temperature,
the mean potential energy of the ultimate elastic strain of an interatomic bond is equal to the mean energy of
thermal motion of kinetic units (atoms or groups of atoms) responsible for the glass transition.

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