Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble Metals
An accurate determination of transport coefficients in liquids, such as diffusivity, is crucial for studying fundamental chemical processes, for constructing and verifying model theories of liquid, and for the optimization of technological processes. However, a reliable experimental determination of...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/12/2167 |
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| author | Nikolay Dubinin Roman Ryltsev |
| author_facet | Nikolay Dubinin Roman Ryltsev |
| author_sort | Nikolay Dubinin |
| collection | DOAJ |
| description | An accurate determination of transport coefficients in liquids, such as diffusivity, is crucial for studying fundamental chemical processes, for constructing and verifying model theories of liquid, and for the optimization of technological processes. However, a reliable experimental determination of the diffusivity is a difficult and sometimes nearly impossible task. In this regard, the development of model theories that allow calculating characteristics of atomic transport is of special interest. Here, the concentration dependencies of the self-diffusion coefficients of the components in Cu-Ag, Cu-Au, and Ag-Au liquid alloys at <i>T</i> = 1423 K and <i>T</i> = 1573 K are calculated in the framework of the linear trajectory approximation in conjunction with the square-well model and the semi-analytical representation of the mean spherical approximation. We reveal that peculiarities in the behavior of the obtained dependencies are related to the peculiarities of the phase diagrams of the alloys under consideration. Additionally, we verify our calculation method on Al<sub>80</sub>-Cu<sub>20</sub> and Al<sub>80</sub>-Au<sub>20</sub> liquid alloys. The results obtained are in good agreement with available experimental and molecular-dynamic simulation data. In the cases when the experimental information is not available, the presented results can be considered as predictive to estimate the quantities under consideration approximately. |
| first_indexed | 2024-03-09T16:06:32Z |
| format | Article |
| id | doaj.art-c43adc00fbad42d18d64a5eed530118e |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T16:06:32Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-c43adc00fbad42d18d64a5eed530118e2023-11-24T16:42:02ZengMDPI AGMetals2075-47012022-12-011212216710.3390/met12122167Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble MetalsNikolay Dubinin0Roman Ryltsev1Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101 Amundsen St., 620016 Ekaterinburg, RussiaInstitute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101 Amundsen St., 620016 Ekaterinburg, RussiaAn accurate determination of transport coefficients in liquids, such as diffusivity, is crucial for studying fundamental chemical processes, for constructing and verifying model theories of liquid, and for the optimization of technological processes. However, a reliable experimental determination of the diffusivity is a difficult and sometimes nearly impossible task. In this regard, the development of model theories that allow calculating characteristics of atomic transport is of special interest. Here, the concentration dependencies of the self-diffusion coefficients of the components in Cu-Ag, Cu-Au, and Ag-Au liquid alloys at <i>T</i> = 1423 K and <i>T</i> = 1573 K are calculated in the framework of the linear trajectory approximation in conjunction with the square-well model and the semi-analytical representation of the mean spherical approximation. We reveal that peculiarities in the behavior of the obtained dependencies are related to the peculiarities of the phase diagrams of the alloys under consideration. Additionally, we verify our calculation method on Al<sub>80</sub>-Cu<sub>20</sub> and Al<sub>80</sub>-Au<sub>20</sub> liquid alloys. The results obtained are in good agreement with available experimental and molecular-dynamic simulation data. In the cases when the experimental information is not available, the presented results can be considered as predictive to estimate the quantities under consideration approximately.https://www.mdpi.com/2075-4701/12/12/2167liquid binary metal alloynoble metaldiffusionsquare-well modelmean spherical approximationlinear trajectory approximation |
| spellingShingle | Nikolay Dubinin Roman Ryltsev Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble Metals Metals liquid binary metal alloy noble metal diffusion square-well model mean spherical approximation linear trajectory approximation |
| title | Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble Metals |
| title_full | Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble Metals |
| title_fullStr | Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble Metals |
| title_full_unstemmed | Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble Metals |
| title_short | Self-Diffusion Coefficients of Components in Liquid Binary Alloys of Noble Metals |
| title_sort | self diffusion coefficients of components in liquid binary alloys of noble metals |
| topic | liquid binary metal alloy noble metal diffusion square-well model mean spherical approximation linear trajectory approximation |
| url | https://www.mdpi.com/2075-4701/12/12/2167 |
| work_keys_str_mv | AT nikolaydubinin selfdiffusioncoefficientsofcomponentsinliquidbinaryalloysofnoblemetals AT romanryltsev selfdiffusioncoefficientsofcomponentsinliquidbinaryalloysofnoblemetals |