Devitrification and Phase Separation of Zinc Borosilicate Glasses in the Presence of MgO, P2O5, and ZrO2

被引：3
|
作者：
Soleimanzade, Mehdi [1 ]
Yekta, Bijan Eftekhari [1 ]
Marghussian, Vahak [1 ]
机构：
[1] Iran Univ Sci & Technol, Div Ceram, Dept Met & Mat Engn, Tehran 1684613114, Iran
来源：
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE | 2014年 / 5卷 / 02期
关键词：
D O I：
10.1111/ijag.12049
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：
A base glass composition which undergoes phase separation was chosen in the system Na2O-ZnO-B2O3-SiO2. Spontaneous and reheat-treatment opal glasses were synthesized by addition of different amounts of oxides such as P2O5 and ZrO2. To clarify devitrification, visible spectroscopy was performed for all samples. Reheat-treated samples showed Tyndall effect in low temperatures, while they were completely opacified after soaking in 800 degrees or 3 h. P2O5-or ZrO2-containing samples opacified spontaneously. The mechanism of opacification in glasses containing the MgO and ZrO2 was partial crystallization, while in the mechanism of P2O5-bearing one was liquid-liquid phase separation.
引用
收藏
页码：185 / 192
页数：8
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