Effect of CaO addition on crystallization processes of Li2O-Al2O3-SiO2-TiO2 glasses

被引：14

作者：

Wang, M.C. ^{[1
]}

Hon, M.H. ^{[1
]}

机构：

[1] Natl Kaohsiung Inst of Technology, Kaohsiung, Taiwan

来源：

Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan | 1992年 / 100卷 / 1167期

关键词：

Alumina - Ceramic materials - Chemical activation - Crystal growth - Crystallization - Lime - Lithium compounds - Silica - Thermodynamics - Titanium dioxide - Transmission electron microscopy - X ray analysis;

D O I：

10.2109/jcersj.100.1285

中图分类号：

学科分类号：

摘要：

By a progressive weight percent substitution of CaO for SiO2, the effect of CaO addition on the crystallization processes of Li2O-Al2O3-SiO2-TiO2 glasses was studied. The crystallization rate was inversely proportional to CaO content. The isothermal kinetics of crystallization of β-spodumene from the Li2O-CaO-Al2O3-SiO2-TiO2 glasses was investigated using quantitative X-ray diffraction (XRD) method. For samples in which CaO contents are 5, 9 and 13 wt%, the activation energies for crystal growth were 249.4 kJ/mol, 151.9 kJ/mol and 189.1 kJ/mol, respectively. The growth morphology parameter m=2 was found, showing rod-like growth.

引用

页码：1285 / 1291

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