Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosity
Abstract A finite element model is developed to study dynamics of atmospheric corrosion of carbon steel, focusing on the influence of thin electrolyte film thickness under varying corrosion product porosity. Calculations have been done to evaluate the impact of electrolyte film thickness and corrosi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-01-01
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| Series: | npj Materials Degradation |
| Online Access: | https://doi.org/10.1038/s41529-022-00316-3 |
| _version_ | 1797952401406164992 |
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| author | Wenchao Li Kangning Liu Jiangshun Wu Qinglin Lian Yujie Qiang Jinshan Pan Ying Jin |
| author_facet | Wenchao Li Kangning Liu Jiangshun Wu Qinglin Lian Yujie Qiang Jinshan Pan Ying Jin |
| author_sort | Wenchao Li |
| collection | DOAJ |
| description | Abstract A finite element model is developed to study dynamics of atmospheric corrosion of carbon steel, focusing on the influence of thin electrolyte film thickness under varying corrosion product porosity. Calculations have been done to evaluate the impact of electrolyte film thickness and corrosion product porosity on oxygen diffusion path, and the hindrance effect of corrosion products on the metal surface activity. The time evolution of corrosion current density and controlling steps in the corrosion process are explored. When the corrosion products are loose, oxygen diffusion is the dominant controlling step, and the thicker the electrolyte film, the lower the corrosion rate. When they are dense, the corrosion process is controlled by the mixture of oxygen diffusion and the surface discharge. The oxygen diffusion path is determined only by the corrosion product porosity, and therefore the corrosion rate is not affected by the electrolyte film thickness. |
| first_indexed | 2024-04-10T22:45:45Z |
| format | Article |
| id | doaj.art-33c00046d50e40a19da3f2f812fa4aa5 |
| institution | Directory Open Access Journal |
| issn | 2397-2106 |
| language | English |
| last_indexed | 2024-04-10T22:45:45Z |
| publishDate | 2023-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Materials Degradation |
| spelling | doaj.art-33c00046d50e40a19da3f2f812fa4aa52023-01-15T12:17:24ZengNature Portfolionpj Materials Degradation2397-21062023-01-017111210.1038/s41529-022-00316-3Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosityWenchao Li0Kangning Liu1Jiangshun Wu2Qinglin Lian3Yujie Qiang4Jinshan Pan5Ying Jin6National Center for Material Service Safety, University of Science & Technology BeijingBeijing Institute of Space Launch Technology, No. 1National Center for Material Service Safety, University of Science & Technology BeijingBeijing Institute of Space Launch Technology, No. 1National Center for Material Service Safety, University of Science & Technology BeijingDivision of Surface & Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of TechnologyNational Center for Material Service Safety, University of Science & Technology BeijingAbstract A finite element model is developed to study dynamics of atmospheric corrosion of carbon steel, focusing on the influence of thin electrolyte film thickness under varying corrosion product porosity. Calculations have been done to evaluate the impact of electrolyte film thickness and corrosion product porosity on oxygen diffusion path, and the hindrance effect of corrosion products on the metal surface activity. The time evolution of corrosion current density and controlling steps in the corrosion process are explored. When the corrosion products are loose, oxygen diffusion is the dominant controlling step, and the thicker the electrolyte film, the lower the corrosion rate. When they are dense, the corrosion process is controlled by the mixture of oxygen diffusion and the surface discharge. The oxygen diffusion path is determined only by the corrosion product porosity, and therefore the corrosion rate is not affected by the electrolyte film thickness.https://doi.org/10.1038/s41529-022-00316-3 |
| spellingShingle | Wenchao Li Kangning Liu Jiangshun Wu Qinglin Lian Yujie Qiang Jinshan Pan Ying Jin Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosity npj Materials Degradation |
| title | Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosity |
| title_full | Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosity |
| title_fullStr | Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosity |
| title_full_unstemmed | Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosity |
| title_short | Numerical simulation of carbon steel atmospheric corrosion under varying electrolyte-film thickness and corrosion product porosity |
| title_sort | numerical simulation of carbon steel atmospheric corrosion under varying electrolyte film thickness and corrosion product porosity |
| url | https://doi.org/10.1038/s41529-022-00316-3 |
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