Experimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 K
The interactions among impurity components in Si-based solution are the important thermodynamic parameters for the purification of silicon materials. A “same concentration” method was used to determine the activity interaction coefficients of Fe to B and Al to B in the silicon solution. Fe and Al we...
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University of Belgrade, Technical Faculty, Bor
2020-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000006Y.pdf |
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| author | Yang F. Zhou Y.-Q. Wu J.-J. Ma W.-H. Lei Y. |
| author_facet | Yang F. Zhou Y.-Q. Wu J.-J. Ma W.-H. Lei Y. |
| author_sort | Yang F. |
| collection | DOAJ |
| description | The interactions among impurity components in Si-based solution are the important thermodynamic parameters for the purification of silicon materials. A “same concentration” method was used to determine the activity interaction coefficients of Fe to B and Al to B in the silicon solution. Fe and Al were respectively dissolved into the binary Si-B solution at 1723 K with the holding time of 5 h, 7 h, 9 h, and 11 h. The equilibrium concentrations of Fe, B in the Si-B-Fe system and Al, B in the Si-B-Al system were determined. The interaction coefficients of Fe to B and Al to B were obtained by fitting the solubility data of B, Fe, and Al. The solubility relationships between B and [%Fe], and between B and [%Al] were obtained, respectively. It was found by the SEM and EPMA pictures of the samples that the third component Fe or Al added to the binary Si-B solution was alloyed, which verifies the accuracy of the experimental determination results. The significance of the activity interaction coefficient of B on boron removal from industrial silicon was analyzed. |
| format | Article |
| id | doaj-art-ada622c240f3444fbf948a449cd9408f |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-ada622c240f3444fbf948a449cd9408f2025-02-02T18:41:07ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752020-01-0156215316010.2298/JMMB190731006Y1450-53392000006YExperimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 KYang F.0Zhou Y.-Q.1Wu J.-J.2Ma W.-H.3Lei Y.4Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, People's Republic of China + Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, People's Republic of ChinaKey Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, People's Republic of China + Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming,Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, People's Republic of China + Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming,Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, People's Republic of China + Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming,The interactions among impurity components in Si-based solution are the important thermodynamic parameters for the purification of silicon materials. A “same concentration” method was used to determine the activity interaction coefficients of Fe to B and Al to B in the silicon solution. Fe and Al were respectively dissolved into the binary Si-B solution at 1723 K with the holding time of 5 h, 7 h, 9 h, and 11 h. The equilibrium concentrations of Fe, B in the Si-B-Fe system and Al, B in the Si-B-Al system were determined. The interaction coefficients of Fe to B and Al to B were obtained by fitting the solubility data of B, Fe, and Al. The solubility relationships between B and [%Fe], and between B and [%Al] were obtained, respectively. It was found by the SEM and EPMA pictures of the samples that the third component Fe or Al added to the binary Si-B solution was alloyed, which verifies the accuracy of the experimental determination results. The significance of the activity interaction coefficient of B on boron removal from industrial silicon was analyzed.http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000006Y.pdfsi-based solutionternary systemactivity interaction coefficientsaturation solubilityphysical characterization |
| spellingShingle | Yang F. Zhou Y.-Q. Wu J.-J. Ma W.-H. Lei Y. Experimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 K Journal of Mining and Metallurgy. Section B: Metallurgy si-based solution ternary system activity interaction coefficient saturation solubility physical characterization |
| title | Experimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 K |
| title_full | Experimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 K |
| title_fullStr | Experimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 K |
| title_full_unstemmed | Experimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 K |
| title_short | Experimental determination of activity interaction coefficients of components in Si-B-Fe and Si-B-Al ternary systems at 1723 K |
| title_sort | experimental determination of activity interaction coefficients of components in si b fe and si b al ternary systems at 1723 k |
| topic | si-based solution ternary system activity interaction coefficient saturation solubility physical characterization |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000006Y.pdf |
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