Enthalpic relaxation of 25Na2O•xTiO2•(75-x)SiO2 glasses

被引：4

作者：

Liska, M

Antalík, J

Stubna, I

机构：

[1] Slovak Acad Sci, Inst Inorgan Chem, Trencin 91101, Slovakia

[2] Slovak Univ Technol Bratislava, Fac Chem Technol, Bratislava 81237, Slovakia

[3] Coll Educ, Nitra 94974, Slovakia

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1999年 / 55卷 / 01期

关键词：

DSC; glass; relaxation; structure;

D O I：

10.1023/A:1010148525445

中图分类号：

O414.1 [热力学];

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%.

引用

页码：155 / 164

页数：10

共 18 条

[1]

DINGWELL DB, 1994, PHYS CHEM MINER, V21, P501

[2] DENSITY OF SOME TITANIUM-BEARING SILICATE LIQUIDS AND THE COMPOSITIONAL DEPENDENCE OF THE PARTIAL MOLAR VOLUME OF TIO2 [J].