Enthalpic Relaxation of 25Na2O·xTiO2·(75-x)SiO2 Glasses

被引：0
作者：
M. Liška
J. Antalík
I. Štubna
机构：
[1] Slovak Academy of Sciences,Institute of Inorganic Chemistry
[2] Slovak Technical University,Faculty of Chemical Technology
[3] College of Education,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 1999年 / 55卷
关键词：
DSC; glass; relaxation; structure;
D O I：
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中图分类号：
学科分类号：
摘要：
The enthalpic relaxation of the title glasses, studied by differential scanning calorimetry, is well described by a mathematical model based on the stretched exponential relaxation function with the relaxation time proportional to the actual viscosity. The dependence of viscosity on temperature and the fictive temperature was expressed by Mazurin's approximation. The relaxation parameters obtained correlated significantly with the glass composition, indicating the changes in the structural of the TiO2 role near a TiO2 content of 3–4 mol%.
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页码：155 / 164
页数：9
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