Temperature dependence of the viscous flow of glass-forming melts in a broad temperature range

被引：0

作者：

D. S. Sanditov

S. B. Munkueva

机构：

[1] Buryat State University,Institute of Physical Material Science

[2] Russian Academy of Sciences,undefined

来源：

Glass Physics and Chemistry | 2016年 / 42卷

关键词：

viscous flow; model; glass and its melts; delocalization of an atom; structural change; bridge atom;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

An equation which is able to describe the temperature dependence of the viscous flow of glassforming melts in a broad range, including the glass-transition range and elevated temperatures has been obtained. The equation contains three parameters; one of them is the preexponential multiplier, which is defined by the extension of the viscosity curve to elevated temperatures (using the Lagrange polynomial), and the other two, the delocalization energy of the atom and the transition potential of the particle, are adjustable parameters. The delocalization energy of the atom that is determined by adjustment is in sufficient accordance with the calculation according to the model of delocalized atoms. The nature of the viscous flow of glass and its melts is discussed.

引用

页码：135 / 140

页数：5

共 18 条

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