Temperature behavior of the free activation energy of viscous flow of glass-forming melts in a wide temperature range
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- Sanditov, D.S., Munkueva, S.B., Mashanov, A.A. et al. Glass Phys Chem (2012) 38: 379. doi:10.1134/S1087659612040141
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The Jenckel equation for the temperature dependence of the free activation energy of viscous flow of inorganic glasses has been satisfactorily interpreted within the hole-activation model of viscous flow. “The formation of a fluctuation hole” (deformation of a region of the network) characterizes a preliminary local change in the structure that is necessary for the main elementary act of viscous flow of refractory glass-forming melts, i.e., the switching of bridge valence bonds according to the Muller-Nemilov mechanism.