1. Numerical simulation analysis on solute redistribution of In–1 wt% Sn alloy during multipass vertical zone refining process
- Author
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Chen Lishi, Hongxing Zheng, Li Mingxu, Qingle Tian, Wu Meizhen, Lu Xingwei, Xu Zhishuai, Peng Jubo, and Jiatao Zhang
- Subjects
010302 applied physics ,Work (thermodynamics) ,Zone melting ,Materials science ,Finite volume method ,Computer simulation ,Alloy ,Crucible ,chemistry.chemical_element ,02 engineering and technology ,Mechanics ,engineering.material ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Inorganic Chemistry ,Cracking ,chemistry ,0103 physical sciences ,Materials Chemistry ,engineering ,0210 nano-technology ,Indium - Abstract
Horizontal zone refining has been widely used for the production of ultra-pure metals through solidification-induced microsegregation effect. Current research on vertical zone refining is limited, owing to the high-temperature cracking risk of crucible; however, it is highly potential for low-melting metals as demonstrated in this research. The present work comprehensively dealt with both back-diffusion and coarsening effect on the solute redistribution by adopting the Voller-Beckerman (V-B) model. Physical fields, including temperature, melt flow and solute distribution, were numerically simulated based on In–1 wt.%Sn binary alloy by means of finite volume method, and the dynamic interaction between melt-flow and solute distribution was clarified. A high-efficiency processing routine was suggested, and it was experimentally proved that the vertical zone refining was a promising method for producing ultra-pure 7 N-grade indium.
- Published
- 2021