Corrosion-driven droplet wetting on iron nanolayers
Abstract The classical Evans’ drop describes a drop of aqueous salt solution, placed on a bulk metal surface where it displays a corrosion pit that grows over time producing further oxide deposits from the metal dissolution. We focus here on the corrosion-induced droplet spreading using iron nanolay...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-45547-9 |
| _version_ | 1827634407370915840 |
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| author | Aurelien Ricard Frederic Restagno Yun Hee Jang Yves Lansac Eric Raspaud |
| author_facet | Aurelien Ricard Frederic Restagno Yun Hee Jang Yves Lansac Eric Raspaud |
| author_sort | Aurelien Ricard |
| collection | DOAJ |
| description | Abstract The classical Evans’ drop describes a drop of aqueous salt solution, placed on a bulk metal surface where it displays a corrosion pit that grows over time producing further oxide deposits from the metal dissolution. We focus here on the corrosion-induced droplet spreading using iron nanolayers whose semi-transparency allowed us to monitor both iron corrosion propagation and electrolyte droplet behavior by simple optical means. We thus observed that pits grow under the droplet and merge into a corrosion front. This front reached the triple contact line and drove a non radial spreading, until it propagated outside the immobile droplet. Such chemically-active wetting is only observed in the presence of a conductive substrate that provides strong adhesion of the iron nanofilm to the substrate. By revisiting the classic Evan’s drop experiment on thick iron film, a weaker corrosion-driven droplet spreading is also identified. These results require further investigations, but they clearly open up new perspectives on substrate wetting by corrosion-like electrochemical reactions at the nanometer scale. |
| first_indexed | 2024-03-09T15:12:55Z |
| format | Article |
| id | doaj.art-995ac47ad2ce44aa90d3e0c8b6f4ccbf |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:12:55Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-995ac47ad2ce44aa90d3e0c8b6f4ccbf2023-11-26T13:15:13ZengNature PortfolioScientific Reports2045-23222023-10-011311910.1038/s41598-023-45547-9Corrosion-driven droplet wetting on iron nanolayersAurelien Ricard0Frederic Restagno1Yun Hee Jang2Yves Lansac3Eric Raspaud4Laboratoire de Physique des Solides, Université Paris-Saclay, CNRSLaboratoire de Physique des Solides, Université Paris-Saclay, CNRSLaboratoire de Physique des Solides, Université Paris-Saclay, CNRSLaboratoire de Physique des Solides, Université Paris-Saclay, CNRSLaboratoire de Physique des Solides, Université Paris-Saclay, CNRSAbstract The classical Evans’ drop describes a drop of aqueous salt solution, placed on a bulk metal surface where it displays a corrosion pit that grows over time producing further oxide deposits from the metal dissolution. We focus here on the corrosion-induced droplet spreading using iron nanolayers whose semi-transparency allowed us to monitor both iron corrosion propagation and electrolyte droplet behavior by simple optical means. We thus observed that pits grow under the droplet and merge into a corrosion front. This front reached the triple contact line and drove a non radial spreading, until it propagated outside the immobile droplet. Such chemically-active wetting is only observed in the presence of a conductive substrate that provides strong adhesion of the iron nanofilm to the substrate. By revisiting the classic Evan’s drop experiment on thick iron film, a weaker corrosion-driven droplet spreading is also identified. These results require further investigations, but they clearly open up new perspectives on substrate wetting by corrosion-like electrochemical reactions at the nanometer scale.https://doi.org/10.1038/s41598-023-45547-9 |
| spellingShingle | Aurelien Ricard Frederic Restagno Yun Hee Jang Yves Lansac Eric Raspaud Corrosion-driven droplet wetting on iron nanolayers Scientific Reports |
| title | Corrosion-driven droplet wetting on iron nanolayers |
| title_full | Corrosion-driven droplet wetting on iron nanolayers |
| title_fullStr | Corrosion-driven droplet wetting on iron nanolayers |
| title_full_unstemmed | Corrosion-driven droplet wetting on iron nanolayers |
| title_short | Corrosion-driven droplet wetting on iron nanolayers |
| title_sort | corrosion driven droplet wetting on iron nanolayers |
| url | https://doi.org/10.1038/s41598-023-45547-9 |
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