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Glass Physics and Chemistry

, Volume 26, Issue 5, pp 455–469 | Cite as

Calculation of the temperature coefficient of viscosity logarithm ∂logη/∂logt for oxide melts in the glass transition range from their composition

  • A. I. Priven
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Abstract

A method for calculating the temperature coefficient of the viscosity logarithm ∂logη/∂logT for oxide melts in the glass transition range has been proposed. The calculations are carried out using the additive formula, in which the composition is expressed in terms of coordination polyhedron content with allowance made for the formation of their hypothetical associates. The results of calculations are compared with the experimental data for ∼2200 compositions, which are represented in the SciGlass information system and contain 32 oxides all in all. The deviation between the results of calculations and the experimental data is comparable to the experimental error.

Keywords

Temperature Coefficient Glass Physic Borate Glass Glass Phys Activation Entropy 
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© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • A. I. Priven
    • 1
  1. 1.ZAO TermeksSt. PetersburgRussia

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