Microstructure and morphology of Si crystals grown in pure Si and Al-Si melts
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Microstructure and morphology of Si crystals grown in pure Si and Al-Si melts
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| Автор |
Toropova, L. V.
Alexandrov, D. V. Rettenmayr, M. Liu, D. |
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| Тематика |
DENDRITE
DENDRITE TIP INTERFACE SHAPE PHASE TRANSFORMATION SILICON ALUMINUM COMPOUNDS CRYSTAL GROWTH CRYSTALS ELECTROMAGNETIC PROPULSION MORPHOLOGY UNDERCOOLING DENDRITE DENDRITE TIP ELECTROMAGNETIC LEVITATION FEATHERY STRUCTURE INTERFACE SHAPE MELT UNDERCOOLING PHASES TRANSFORMATION PRIMARY SI SI CRYSTALS UNDERCOOLINGS SILICON |
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| Описание |
Microstructure of Al-40 wt%Si samples solidified in electromagnetic levitation furnace is studied at high melt undercooling. Primary Si with feathery and dendritic structures is observed. As this takes place, single Si crystals either contain secondary dendrite arms or represent faceted structures. Our experiments show that at a certain undercooling, there exists the microstructural transition zone of faceted to non-faceted growth. Also, we analyze the shape of dendritic crystals solidifying from liquid Si as well as from hypereutectic Al-Si melts at high growth undercoolings. The shapes of dendrite tips grown at undercoolings >100 K along the surface of levitated Al-40 wt%Si droplets are compared with pure Si dendrite tips from the literature. The dendrite tips are digitized and superimposed with theoretical shape function recently derived by stitching the Ivantsov and Brener solutions. We show that experimental and theoretical dendrite tips are in good agreement for Si and Al-Si samples. © 2022 IOP Publishing Ltd.
Deutsche Forschungsgemeinschaft, DFG, (Re1261/23) Russian Science Foundation, RSF, (21-79-10012) LVT gratefully acknowledges fruitful discussions about the theoretical results with Prof. Peter Galenko, and financial support from the Russian Science Foundation (Project No. 21-79-10012). MR and DML are grateful for financial support by Deutsche Forschungsgemeinschaft, Grant Re1261/23. |
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| Дата |
2024-04-22T15:53:36Z
2024-04-22T15:53:36Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Toropova, LV, Alexandrov, DV, Rettenmayr, M & Liu, D 2022, 'Microstructure and morphology of Si crystals grown in pure Si and Al-Si melts', Journal of physics. Condensed matter : an Institute of Physics journal, Том. 34, № 9. https://doi.org/10.1088/1361-648X/ac3792
Toropova, L. V., Alexandrov, D. V., Rettenmayr, M., & Liu, D. (2022). Microstructure and morphology of Si crystals grown in pure Si and Al-Si melts. Journal of physics. Condensed matter : an Institute of Physics journal, 34(9). https://doi.org/10.1088/1361-648X/ac3792 0953-8984 Final All Open Access; Hybrid Gold Open Access https://doi.org/10.1088/1361-648x/ac3792 https://doi.org/10.1088/1361-648x/ac3792 http://elar.urfu.ru/handle/10995/132465 10.1088/1361-648X/ac3792 85124850726 757617300001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by |
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| Формат |
application/pdf
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| Издатель |
IOP Publishing Ltd
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| Источник |
Journal of Physics: Condensed Matter
Journal of Physics Condensed Matter |
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