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Molecular Dynamics Analysis of 6H-SiC Subsurface Damage by Nanofriction
[Image: see text] To investigate the subsurface damage of 6H-SiC nanofriction, this paper uses molecular dynamics analysis to analyze the loading process of friction 6H-SiC surfaces, thus providing an in-depth analysis of the formation mechanism of subsurface damage from microscopic crystal structur...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9161426/ https://www.ncbi.nlm.nih.gov/pubmed/35664596 http://dx.doi.org/10.1021/acsomega.2c02115 |
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author | Yu, Dongling Zhang, Huiling Feng, Xiaoyu Liao, Dahai Wu, Nanxing |
author_facet | Yu, Dongling Zhang, Huiling Feng, Xiaoyu Liao, Dahai Wu, Nanxing |
author_sort | Yu, Dongling |
collection | PubMed |
description | [Image: see text] To investigate the subsurface damage of 6H-SiC nanofriction, this paper uses molecular dynamics analysis to analyze the loading process of friction 6H-SiC surfaces, thus providing an in-depth analysis of the formation mechanism of subsurface damage from microscopic crystal structure deformation characteristics. This paper constructs a diamond friction 6H-SiC nanomodel, combining the radial distribution function, dislocation extraction method, and diamond identification method with experimental analysis to verify the dislocation evolution process, stress distribution, and crack extension to investigate the subsurface damage mechanism. During the friction process, the kinetic and potential energies as well as the temperature of the 6H-SiC workpiece basically tend to rise, accompanied by the generation of dislocated lumps and cracks on the sides of the 6H-SiC workpiece. The stresses generated by friction during the plastic deformation phase lead to dislocations in the vicinity of the diamond tip friction, and the process of dislocation nucleation expansion is accompanied by energy exchange. Dislocation formation is found to be the basis for crack generation, and cracks and peeled blocks constitute the subsurface damage of 6H-SiC workpieces by diamond identification methods. Friction experiments validate microscopic crystal changes against macroscopic crack generation, which complements the analysis of the damage mechanism of the simulated 6H-sic nanofriction subsurface. |
format | Online Article Text |
id | pubmed-9161426 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-91614262022-06-03 Molecular Dynamics Analysis of 6H-SiC Subsurface Damage by Nanofriction Yu, Dongling Zhang, Huiling Feng, Xiaoyu Liao, Dahai Wu, Nanxing ACS Omega [Image: see text] To investigate the subsurface damage of 6H-SiC nanofriction, this paper uses molecular dynamics analysis to analyze the loading process of friction 6H-SiC surfaces, thus providing an in-depth analysis of the formation mechanism of subsurface damage from microscopic crystal structure deformation characteristics. This paper constructs a diamond friction 6H-SiC nanomodel, combining the radial distribution function, dislocation extraction method, and diamond identification method with experimental analysis to verify the dislocation evolution process, stress distribution, and crack extension to investigate the subsurface damage mechanism. During the friction process, the kinetic and potential energies as well as the temperature of the 6H-SiC workpiece basically tend to rise, accompanied by the generation of dislocated lumps and cracks on the sides of the 6H-SiC workpiece. The stresses generated by friction during the plastic deformation phase lead to dislocations in the vicinity of the diamond tip friction, and the process of dislocation nucleation expansion is accompanied by energy exchange. Dislocation formation is found to be the basis for crack generation, and cracks and peeled blocks constitute the subsurface damage of 6H-SiC workpieces by diamond identification methods. Friction experiments validate microscopic crystal changes against macroscopic crack generation, which complements the analysis of the damage mechanism of the simulated 6H-sic nanofriction subsurface. American Chemical Society 2022-05-16 /pmc/articles/PMC9161426/ /pubmed/35664596 http://dx.doi.org/10.1021/acsomega.2c02115 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Yu, Dongling Zhang, Huiling Feng, Xiaoyu Liao, Dahai Wu, Nanxing Molecular Dynamics Analysis of 6H-SiC Subsurface Damage by Nanofriction |
title | Molecular Dynamics Analysis of 6H-SiC Subsurface Damage
by Nanofriction |
title_full | Molecular Dynamics Analysis of 6H-SiC Subsurface Damage
by Nanofriction |
title_fullStr | Molecular Dynamics Analysis of 6H-SiC Subsurface Damage
by Nanofriction |
title_full_unstemmed | Molecular Dynamics Analysis of 6H-SiC Subsurface Damage
by Nanofriction |
title_short | Molecular Dynamics Analysis of 6H-SiC Subsurface Damage
by Nanofriction |
title_sort | molecular dynamics analysis of 6h-sic subsurface damage
by nanofriction |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9161426/ https://www.ncbi.nlm.nih.gov/pubmed/35664596 http://dx.doi.org/10.1021/acsomega.2c02115 |
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