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http://elar.urfu.ru/handle/10995/141723
Название: | On Spontaneous Dispersion as a Cause of Microstratification of Metal Melts |
Авторы: | Chikova, O. A. Tsepelev, V. S. Shmakova, K. Y. |
Дата публикации: | 2024 |
Издатель: | Multidisciplinary Digital Publishing Institute (MDPI) |
Библиографическое описание: | Chikova, O., Tsepelev, V., & Shmakova, K. (2024). On Spontaneous Dispersion as a Cause of Microstratification of Metal Melts. Materials, 17(10), [2215]. https://doi.org/10.3390/ma17102215 |
Аннотация: | The phenomenon of spontaneous dispersion is considered as the cause of the microstratification of metal melts. In a microstratification melt, a violation of long-range order in the arrangement of atoms (LRO) is observed, which corresponds to a dispersed particle size of more than 2 nm. Microseparation occurs due to spontaneous dispersion upon contact of liquid and solid metal or the mixing of two liquid metals. The possibility of spontaneous dispersion was assessed using three different criteria: Volmer’s cr iterion, Rehbinder’s criterion and the diffusion rate criterion. The diffusion rate criterion was obtained on the basis of the theory of rate processes, which describes how diffusing atoms overcome the interphase boundary. It has been established that Al–Sn melts contain colloidal-scale particles (4 nm), and Al–Si and Al–Ge melts contain atomic-scale particles (0.1 nm). For a system with a continuous series of Cu–Ni solid solutions in dispersion (Cu10Ni90—Cu20Ni80), the particle size is 2 nm. The particle size of the ternary eutectic GaInSn in the dispersion (Ga50In50—Ga50Sn50) is 5.6 nm, and the size of immiscible Cu–Fe melts in the dispersion (Cu80Fe20—Cu60Fe40) is 4.8 nm. Long-range order violations (LRO) and the presence of microlayering with colloidal particles larger than 20 nm were observed in the GaInSn ternary eutectic, in the Al–Sn simple eutectic with the preferential interaction of similar atoms, and in Cu–Fe melts with a monotectic phase diagram. © 2024 by the authors. |
Ключевые слова: | CRITERIA FOR TRUE (ENTROPIC) SPONTANEOUS DISPERSION DISPERSED PARTICLES LIQUID ALLOYS MECHANISMS OF QUASI-SPONTANEOUS DISPERSION METHODS AND RESULTS FOR ASSESSING SIZE OF DISPERSED PARTICLES MICROSTRATIFICATION SPONTANEOUS DISPERSION ATOMS BINARY ALLOYS COPPER ALLOYS DIFFUSION EUTECTICS INDIUM ALLOYS IRON ALLOYS LIQUID METALS PARTICLE SIZE SOLS TERNARY ALLOYS TIN ALLOYS CRITERIA FOR TRUE (ENTROPIC) SPONTANEOUS DISPERSION DISPERSED PARTICLE LIQUID ALLOY LONG RANGE ORDERS MECHANISM OF QUASI-SPONTANEOUS DISPERSION METHOD AND RESULT FOR ASSESSING SIZE OF DISPERSED PARTICLE MICROSTRATIFICATION PARTICLES SIZES SPONTANEOUS DISPERSION GALLIUM ALLOYS |
URI: | http://elar.urfu.ru/handle/10995/141723 |
Условия доступа: | info:eu-repo/semantics/openAccess cc-by |
Идентификатор SCOPUS: | 85194410041 |
Идентификатор WOS: | 001231580900001 |
Идентификатор PURE: | 57890140 |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma17102215 |
Располагается в коллекциях: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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Файл | Описание | Размер | Формат | |
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2-s2.0-85194410041.pdf | 3,05 MB | Adobe PDF | Просмотреть/Открыть |
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