Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification
Electromagnetic semi-continuous directional solidification (ESCDS) was employed to separate and purify Si from Sn-30Si alloy. The experimental results indicate that the enrichment of primary silicon reaches approximately 91% as the solidification rate is 1.5 mm/min high. While Ca and B are removed b...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/143853 |
| _version_ | 1811683433587408896 |
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| author | Huang, Feng Zhao, Lian Liu, Lin Hu, Zhili Chen, Ruirun Dong, Zhili |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Huang, Feng Zhao, Lian Liu, Lin Hu, Zhili Chen, Ruirun Dong, Zhili |
| author_sort | Huang, Feng |
| collection | NTU |
| description | Electromagnetic semi-continuous directional solidification (ESCDS) was employed to separate and purify Si from Sn-30Si alloy. The experimental results indicate that the enrichment of primary silicon reaches approximately 91% as the solidification rate is 1.5 mm/min high. While Ca and B are removed by segregation, the removal mechanism of Fe is proved to be the recombination of segregation and ferrosilicon impurity phase precipitation. Resulting from the increase of the ratio of surface area to the volume (S/V) of the molten pool, the impurity remove via volatilization was enhanced. The removal ratios of the main impurities in MG-Si such as Al, Fe, Ca, B and P reach 96.55%, 99.05%, 98.81%, 43.33% and 60.53%, respectively. Due to the effective separation and purification effect, high growth rate, low or even no crucible contamination and consumption, ESCDS shows the great potential to further reduce the Sn consumption during Sn-Si solvent refining and increase the purification efficiency. |
| first_indexed | 2024-10-01T04:12:40Z |
| format | Journal Article |
| id | ntu-10356/143853 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:12:40Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1438532023-07-14T15:58:06Z Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification Huang, Feng Zhao, Lian Liu, Lin Hu, Zhili Chen, Ruirun Dong, Zhili School of Materials Science and Engineering Engineering::Materials Sn-Si Alloy Electromagnetic Directional Solidification Electromagnetic semi-continuous directional solidification (ESCDS) was employed to separate and purify Si from Sn-30Si alloy. The experimental results indicate that the enrichment of primary silicon reaches approximately 91% as the solidification rate is 1.5 mm/min high. While Ca and B are removed by segregation, the removal mechanism of Fe is proved to be the recombination of segregation and ferrosilicon impurity phase precipitation. Resulting from the increase of the ratio of surface area to the volume (S/V) of the molten pool, the impurity remove via volatilization was enhanced. The removal ratios of the main impurities in MG-Si such as Al, Fe, Ca, B and P reach 96.55%, 99.05%, 98.81%, 43.33% and 60.53%, respectively. Due to the effective separation and purification effect, high growth rate, low or even no crucible contamination and consumption, ESCDS shows the great potential to further reduce the Sn consumption during Sn-Si solvent refining and increase the purification efficiency. Accepted version 2020-09-28T02:33:02Z 2020-09-28T02:33:02Z 2019 Journal Article Huang, F., Zhao, L., Liu, L., Hu, Z., Chen, R., & Dong, Z. (2019). Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification. Materials Science in Semiconductor Processing, 99, 54–61. doi:10.1016/j.mssp.2019.04.015 1369-8001 https://hdl.handle.net/10356/143853 10.1016/j.mssp.2019.04.015 99 54 61 en Materials Science in Semiconductor Processing © 2019 Elsevier Ltd. All rights reserved. This paper was published in Materials Science in Semiconductor Processing and is made available with permission of Elsevier Ltd. application/pdf |
| spellingShingle | Engineering::Materials Sn-Si Alloy Electromagnetic Directional Solidification Huang, Feng Zhao, Lian Liu, Lin Hu, Zhili Chen, Ruirun Dong, Zhili Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification |
| title | Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification |
| title_full | Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification |
| title_fullStr | Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification |
| title_full_unstemmed | Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification |
| title_short | Separation and purification of Si from Sn-30Si alloy by electromagnetic semi-continuous directional solidification |
| title_sort | separation and purification of si from sn 30si alloy by electromagnetic semi continuous directional solidification |
| topic | Engineering::Materials Sn-Si Alloy Electromagnetic Directional Solidification |
| url | https://hdl.handle.net/10356/143853 |
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