Phase separation in the glasses of the (8-x)Na2O • xFe2O3 • 22B2O3 • 70SiO2 system

被引：7

作者：

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

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

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

Drozdova, I. A. ^{[1
]}

Kurilenko, L. N. ^{[1
]}

机构：

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

来源：

GLASS PHYSICS AND CHEMISTRY | 2016年 / 42卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

Na2O-B2O3-SiO2-Fe2O3; system; phase-separated glass; glass-transition temperature; iron(II) metasilicate; beta-Fe2O3; oxide;

D O I：

10.1134/S1087659616060109

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 with the (8-x)Na2O center dot xFe(2)O(3) a (TM) 22B(2)O(3) a (TM) 70SiO(2) compositions, where the Fe2O3 content varies from 2 to 6 mol %, which were heat-treated at the temperatures of 550 and 700A degrees D for 144 and 2 h, respectively, have been studied by dilatometry, electron microscopy, and X-ray powder diffractometry. It has been shown that, with an increase in the total concentration of Fe2O3 in the glass, there is a trend to the transition from an interconnected to a droplet-matrix phase-separated structure. The crystal line phases of Fe3O4, FeSiO3, and beta-Fe2O3 are formed depending on composition, while the latter is observed only in the glass with the equivalent contents of Na2O and Fe2O3. There is a minimum on the glass transition temperature dependence of the composition at equimolar (4 mol %) contents of Na2O and Fe2O3.

引用

页码：631 / 634

页数：4

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