HIGH THERMAL-EXPANSION PHOSPHATE-GLASSES .2.

被引：0
|
作者：
PENG, YB [1 ]
DAY, DE [1 ]
机构：
[1] UNIV MISSOURI, MAT RES CTR, ROLLA, MO 65401 USA
来源：
GLASS TECHNOLOGY | 1991年 / 32卷 / 06期
关键词：
D O I：
暂无
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 chemical durability of phosphate glasses can be improved by adding oxides such as Al2O3 or PbO. The general compositions investigated were M2O-MO-M2O3-P2O5, where M2O = Ag2O, Na2O, or K2O, MO = BaO or PbO, and M2O3 = Al2O3 or Fe2O3. Ag2O and PbO resulted in important improvements in chemical durability while maintaining high thermal expansion. Many glass compositions in the system had a thermal expansion coefficient of 180 to 210 x 10(-7)/deg C and a dissolution rate in deionised water at 70-degrees-C of < 10(-7) g/cm2 min. Some of these compositions appeared to be good candidates for sealing glasses.
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页码：200 / 205
页数：6
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