EFFECTS OF WATER-CONTENT ON ALUMINOSILICATE GLASSES AND THE RELATION TO STRONG FRAGILE LIQUID THEORY

被引：35

作者：

JEWELL, JM ^{[1
]}

SHAW, CM ^{[1
]}

SHELBY, JE ^{[1
]}

机构：

[1] ALFRED UNIV,NYS COLL CERAM,ALFRED,NY 14802

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1993年 / 152卷 / 01期

关键词：

D O I：

10.1016/0022-3093(93)90441-Y

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of variations in water content on the transformation range properties of 25Na2O-25Al2O3-50SiO2, 10Na2O-10CaO-20Al2O3-60SiO2, 20CaO-20Al2O3-60SiO2, and 20Y2O3-20Al2O3-60SiO2 glasses are presented. Samples of these glasses were prepared with a range of water or hydroxyl contents by melting under various partial pressures of water. With an increase in water content of each glass, a decrease in both the glass transformation temperature, T(g), and the transformation range viscosity are observed. The magnitude of these effects of water depends strongly on composition and is correlated with the activation energy for viscous flow. The data from this study are combined with the known effects of water on the properties of phosphate, borate, heavy metal fluoride, and other silicate glasses to show that the flow properties of 'strong' liquids are affected much more dramatically than those of 'fragile' liquids. These data are used to determine a quantitative empirical relationship between the magnitude of the effect of water on flow properties and the fragility of the glass-forming liquid.

引用

页码：32 / 41

页数：10

共 34 条

[1] ON TEMPERATURE DEPENDENCE OF COOPERATIVE RELAXATION PROPERTIES IN GLASS-FORMING LIQUIDS [J].