Influence of Compositions on Phase Separation in R2O-CaO-ZnO-Al2O3-SiO2 System

Abstract

Abstract: The influence of compositions on phase separation in R₂O-CaO-ZnO-Al₂O₃-SiO₂ system was investigated in detail by OM and TEM.
The studied results show that a wide miscibility gap is in K₂O-CaO-ZnO-Al₂O₃-SiO₂ system and it will down to the region
of the concentrations of low Al₂O₃ and high SiO₂ with the equimolecular substitution of K₂O by Na₂O, and the higher the content of ZnO is, the larger the phase separation region is. It is
evident that in the region of low Al₂O₃ concentration the tendency towards phase separation increases with increasing Al₂O₃ content
and when Al₂O₃ content is above 6.20 mol% this tendency decreases with increasing Al₂O₃ content.

Key words: silicate glass, phase separation

CLC Number:

TQ171

SUN Hong-Wei,CHEN Xian-Qiu,GAO Li-Ming,WANG Shu-Ling,FENG Jian-Qiu. Influence of Compositions on Phase Separation in R₂O-CaO-ZnO-Al₂O₃-SiO₂ System[J]. Journal of Inorganic Materials.

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Influence of Compositions on Phase Separation in R₂O-CaO-ZnO-Al₂O₃-SiO₂ System

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