VISCOSITY AND MICROSTRUCTURE OF PHASE-SEPARATED BOROSILICATE GLASSES

被引：23

作者：

TAKAMORI, T ^{[1
]}

TOMOZAWA, M ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,DEPT MAT ENGN,TROY,NY 12181

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1979年 / 62卷 / 7-8期

关键词：

D O I：

10.1111/j.1151-2916.1979.tb19082.x

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 viscosity of a sodium borosilicate glass (SiO2 70, B2O3 23, and Na2O 7 wt%) was measured as a function of heat‐treatment temperature and time for phase separation. The viscosity was shown to approach an equilibrium value unique to the heat‐treatment temperature. The magnitude of the equilibrium viscosity increased as the heat‐treatment temperature decreased. These results, plus electron microscopy of microstructure development, established that the viscosity of phase‐separated borosilicate glasses is primarily controlled by the composition of the continuous, high‐viscosity phase and that the effect, if any, of the microstructure size is small. In contrast to previous reports, the heat‐treatment time required to attain the equilibrium composition was extremely long. Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：373 / 377

页数：5

共 12 条

[1]

BURNETT DG, 1970, PHYS CHEM GLASSES, V11, P125

[2] PHASE SEPARATION IN BOROSILICATE GLASSES [J].