Yonghui Yang, Chao Fan, Pengchen Yang, Zhanwei Liu, Hengwei Yan
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Thermophysical and Chemical Properties of NaF-AlF3-SiO2 Melts with Al2O3 Addition for Al-Si Alloy Production
This study investigated the effect of aluminum oxide (Al2O3) additives on the properties of NaF-AlF3-SiO2 melts. The liquid-phase line temperature was determined through thermal analysis, while the solubility and volatilization loss of silicon dioxide (SiO2) were evaluated using the rotating quartz disk method and volatilization experiments. The dissolution mechanism of Al2O3 in the melt was explored through thermodynamic analysis and experimental validation. The results indicated that Al2O3 addition significantly decreased liquid-phase line temperature, enhanced SiO2 solubility, and reduced volatilization losses. These findings provide a theoretical basis for optimizing the electrolysis process of Al–Si alloys, which contribute to improved melt performance, enhanced energy efficiency, and reduced volatilization losses, thereby promoting increased efficiency in industrial applications.
期刊介绍：
The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.
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