Thermodynamic Modeling of CaO-CaF2 and CaO-SiO2 Systems

被引：3
|
作者：
Shu, Qifeng [1 ]
Chou, Kuo-chih [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, State Key Lab Adv Met, Beijing 100083, Peoples R China
来源：
HIGH TEMPERATURE MATERIALS AND PROCESSES | 2015年 / 34卷 / 01期
基金：
中国国家自然科学基金;
关键词：
mould fluxes; activity; phase diagram; modeling; PHASE-DIAGRAM; MELTS; SILICA;
D O I：
10.1515/htmp-2013-0133
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CaO-CaF2-SiO2 system is a base system for commercial mould fluxes. Thermodynamic properties of CaO-CaF2-SiO2 are essential for understanding the properties of mould fluxes and developing new mould fluxes. Thermodynamics of two sub-binary systems CaO-CaF2 and CaO-SiO2 were modeled in the present work. A thermodynamic model for description of liquid slag presented by Bjorkvall et al. was extended to incorporate fluorine ion into model framework. The activities of components in CaO-CaF2 and CaO-SiO2 were calculated and good agreements between experimental and calculated activities were achieved. Phase diagrams for CaO-CaF2 and CaO-SiO2 systems were also well reproduced by the present calculation.
引用
收藏
页码：95 / 100
页数：6
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