Raman studies of the phase separation mechanism of CaO-Al2O3-SiO2 glasses in an electric field

被引：12
作者：
Liu W. [1 ]
Gu X.M. [1 ]
Liang K.M. [1 ]
Chen H. [1 ]
Zheng Y.K. [1 ]
Gu S.R. [1 ]
机构：
[1] Tsinghua Univ, Beijing
来源：
Metallurgical and Materials Transactions B | 1999年 / 30卷 / 4期
关键词：
Material Transaction; Phase Separation; Raman Spectroscopy; Coordination Polyhedron; Bridge Oxygen Atom;
D O I：
10.1007/s11663-999-0029-2
中图分类号：
学科分类号：
摘要：
The effects of an electric field on phase separation in CaO-Al2O3-SiO2 (CAS) has been studied by Raman spectroscopy. It was discovered that an electric field can promote the process of phase separation in CAS glasses. The droplet phase is the enriched section for Ti4+ and Ca2+ ions. The continuous matrix is the enriched section for Si4+. The results of Raman spectroscopy indicate that the electric-field treatment can increase the concentrations of Q and Q in CAS glasses and that increase in concentration near the cathode is higher than that near the anode. The increase in Q and Q units is due to the increase of the concentration of Of and Ob. On the basis of experimental results, the mechanism of phase separation of CAS glass in an electric field has been proposed.
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收藏
页码：685 / 688
页数：3
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