Glass Physics and Chemistry

, Volume 38, Issue 4, pp 379–385

Temperature behavior of the free activation energy of viscous flow of glass-forming melts in a wide temperature range

  • D. S. Sanditov
  • S. B. Munkueva
  • A. A. Mashanov
  • B. D. Sanditov
Article

DOI: 10.1134/S1087659612040141

Cite this article as:
Sanditov, D.S., Munkueva, S.B., Mashanov, A.A. et al. Glass Phys Chem (2012) 38: 379. doi:10.1134/S1087659612040141

Abstract

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.

Keywords

viscous flow of glass melts free energy temperature behavior 

Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • D. S. Sanditov
    • 1
    • 2
  • S. B. Munkueva
    • 2
  • A. A. Mashanov
    • 1
  • B. D. Sanditov
    • 1
  1. 1.Buryatia State UniversityUlan-Ude, BuryatiaRussia
  2. 2.Division of Physical Problems, Buryatia Science Center, Siberian BranchRussian Academy of SciencesUlan-Ude, BuryatiaRussia

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