THE GLASS-TRANSITION TEMPERATURE OF LITHIUM BOROSILICATE GLASSES RELATED TO ATOMIC ARRANGEMENTS

被引：17

作者：

BOEKENHAUER, R ^{[1
]}

ZHANG, HX ^{[1
]}

FELLER, S ^{[1
]}

BAIN, D ^{[1
]}

KAMBEYANDA, S ^{[1
]}

BUDHWANI, K ^{[1
]}

PANDIKUTHIRA, P ^{[1
]}

ALAMGIR, F ^{[1
]}

PETERS, AM ^{[1
]}

MESSER, S ^{[1
]}

LOH, KL ^{[1
]}

机构：

[1] COE COLL, DEPT PHYS, CEDAR RAPIDS, IA 52402 USA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 175卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-3093(94)90005-1

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

The glass transition temperatures, T-g, of a large number of lithium borosilicate glasses were measured over an exceptionally wide range of alkali oxide to boron oxide ratios, R, for several fixed silica to boron oxide ratios, K. In addition, T(g)s were measured in the JLi(2)O.SiO2 system over the range 0 < J < 1.75. In the borosilicates, for each K family two maxima were found in the trends for T-g: the first was associated with a maximum in the fraction of four-coordinated borons present; the second was associated with the orthoborate-orthosilicate composition. The trends for T-g were analyzed on the basis of a proportional sharing of the alkali with the borate and silicate subsystems for R above a certain critical value of R defined as R(0). The effects due to carbon dioxide retention were observed in the trends for T-g and are discussed. In the silicates, the T-g was found to decrease slowly from J = 0.2 through J = 1.3. Above J = 1.3, the T-g increased again until the end of the glass-forming range was reached near J = 1.75.

引用

页码：137 / 144

页数：8

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