NMR study of structural changes of alkali borosilicate glasses with heat treatment

被引：28
作者：
Chen, D
Miyoshi, H
Masui, H
Akai, T
Yazawa, T
机构：
[1] JST, PRESTO, Ikeda, Osaka 5638577, Japan
[2] Natl Inst Adv Ind Sci & Technol, AIST Kansai, Green Life Technol Ecoglass Res Grp, Special Div, Ikeda, Osaka 5638577, Japan
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2004年 / 345卷
关键词：
D O I：
10.1016/j.jnoncrysol.2004.08.064
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 phenomenon of the temperature dependent structural change of xNa(2)O . (50 - x)B2O3 . 50SiO(2) glasses was observed by use of B-11 and Si-29 NMR and Raman spectroscopies. The B-11 NMR measurement showed that a small fraction of BO4 units transformed into BO3 units below x = 17 (Na2O/B2O3 < 0.51) after the glasses were heat treated at 600degreesC for 50h; an opposite transformation occurred above x = 18; namely BO3 units converted into BO4 units. Raman and Si-29 MAS-NMR spectra also showed the effect of the heat treatment on the structure of the glass. (C) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：104 / 107
页数：4
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