Thermo-optical study of NaPO3 crystallization

被引：0

作者：

Kovár V. ^{[1
]}

Bodišová K. ^{[1
]}

Kremničan V. ^{[2
]}

Majling J. ^{[1
]}

机构：

[1] Dept. of Ceramics, Glass and Cement, Slovak University of Technology

[2] Data System Laboratory

来源：

Journal of Thermal Analysis and Calorimetry | 2005年 / 79卷 / 3期

关键词：

Activation energy; Crystallization; NaPO[!sub]3[!/sub; Optical transmittance; Thermo-optical;

D O I：

10.1007/s10973-005-0603-z

中图分类号：

学科分类号：

摘要：

The optical transmittance records taken on the small polished plates of NaPO3 glass at different linear heating rates, previously kinetically analyzed to derive the activation energy of the glass crystallization applying the Kissinger equation, are presently analyzed according to the modified Johnson-Mchl-Avrami kinetic model. A decrease in the relative transmitted light intensity is taken, as previously, as an inverse measure of the volume fraction of crystallized NaPO3. The activation energy of 131±11 kJ mol-1, derived under these circumstances, is in good agreement with the results published in literature (138 kJ mol-1), derived from the isothermal heating-quenching and XRD measurements. © 2005 Akadémiai Kiadó, Budapest.

引用

页码：727 / 730

页数：3

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