| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Temperature Electrochemistry: An FMD Symposium Honoring Uday B. Pal
|
| Presentation Title |
Electrically-enhanced Boron and Phosphorus Removal from Silicon by CaO-SiO₂-Al₂O₃/-MgO Slag Treatment |
| Author(s) |
Andreas D. P. Putera, Katri Avarmaa, Matthew Humbert, Himawan T. B. M. Petrus, Geoffrey A Brooks, M. Akbar Rhamdhani |
| On-Site Speaker (Planned) |
Andreas D. P. Putera |
| Abstract Scope |
It has been recognised that reactions between liquid metal and slag are electrochemical in nature. Hence, manipulation of the reactions (enhancement or retardation) may be expected if an external electromotive force is applied. In this work, the removal of both boron and phosphorus from silicon by CaO-SiO₂-Al₂O₃ slag, enhanced by applying electromotive force (EMF), was investigated. An improved cell configuration was developed and utilized. New data were generated by carrying out experiments in Ar atmosphere at 1500°C to 1600°C and applying different current across the molten slag and silicon. The change of the elements concentration and final concentration were tracked and measured. The kinetic results were compiled and fitted to a kinetic model to predict the corresponding parameters and the final concentrations were compared to the equilibrium concentration simulated by FactSage. The results show that kinetics and partitioning ratio of boron and phosphorus were affected by the applied current. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, Other |