Physicochemical Properties of Glasses of the Na2O-B2O3-SiO2-Fe2O3 System in the 6Na2O/70SiO2 Section

被引：4

作者：

Konon, M. Yu. ^{[1
]}

Stolyar, S. V. ^{[1
]}

Anfimova, I. N. ^{[1
]}

Polyakova, I. G. ^{[1
]}

Dikaya, L. F. ^{[1
]}

机构：

[1] Russian Acad Sci, Grebenshchikov Inst Silicate Chem, St Petersburg 199034, Russia

来源：

GLASS PHYSICS AND CHEMISTRY | 2018年 / 44卷 / 05期

关键词：

Na2O-B2O3-SiO2-Fe2O3; system; phase-separated glass; dilatometry; glass transition temperature; density; molar volume; cristobalite; magnetite;

D O I：

10.1134/S1087659618050097

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：

Glasses of the 6Na(2)O-(24-x)B2O3-70SiO(2)-xFe(2)O(3) system with x ranging from 2 to 10 mol % are studied by dilatometry and X-ray powder diffractometry. The density of the glass is measured and the molar volume is calculated. The heat treatment of the glass is carried out at 550 and 700 degrees C for 96 and 2 h, respectively. Magnetite is formed in the heat-treated glasses and its content increases with the growth of the Fe2O3 concentration. In the glasses containing from 4 to 8 mol. % of Fe2O3, cristobalite is formed after treatment at 700 degrees C for 2 h. An increase in the density and the glass transition temperature and a decrease in the molar volume is observed with the growth of the iron oxide content.

引用

页码：495 / 497

页数：3

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