Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer
In this paper, the tailoring of superhydrophobic surfaces on AA6082 aluminum alloy by chemical etching in an HF/HCl solution, followed by silane self-assembling, was applied for enhanced corrosion protection in the marine field. In particular, different etching times were considered in order to opti...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/23/8549 |
| _version_ | 1797462823497891840 |
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| author | Amani Khaskhoussi Luigi Calabrese Edoardo Proverbio |
| author_facet | Amani Khaskhoussi Luigi Calabrese Edoardo Proverbio |
| author_sort | Amani Khaskhoussi |
| collection | DOAJ |
| description | In this paper, the tailoring of superhydrophobic surfaces on AA6082 aluminum alloy by chemical etching in an HF/HCl solution, followed by silane self-assembling, was applied for enhanced corrosion protection in the marine field. In particular, different etching times were considered in order to optimize the treatment effect. The results indicate that all the prepared surfaces, after silanization, were characterized by superhydrophobic behavior with a contact angle higher than 150°. The contact and sliding angles strongly depend on the surface morphology at varying etching times. The optimum was observed with an etching time of 20 s, where a microscale coral-like structure coupled with a homogeneous and ordered pixel-like nanostructure was obtained on the aluminum surface showing a Cassie–Baxter superhydrophobic behavior with a water contact angle of 180° and a sliding angle equal to 0°. All superhydrophobic surfaces achieved an enhanced corrosion protection efficiency and impedance modulus up to two orders of magnitude higher than the as-received AA6082 in simulated seawater. |
| first_indexed | 2024-03-09T17:41:56Z |
| format | Article |
| id | doaj.art-b61545f56a8d448a9a24e1008162bfc9 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T17:41:56Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-b61545f56a8d448a9a24e1008162bfc92023-11-24T11:30:08ZengMDPI AGMaterials1996-19442022-11-011523854910.3390/ma15238549Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane MonolayerAmani Khaskhoussi0Luigi Calabrese1Edoardo Proverbio2Department of Engineering, University of Messina, Contrada di Dio Sant’Agata, 98166 Messina, ItalyDepartment of Engineering, University of Messina, Contrada di Dio Sant’Agata, 98166 Messina, ItalyDepartment of Engineering, University of Messina, Contrada di Dio Sant’Agata, 98166 Messina, ItalyIn this paper, the tailoring of superhydrophobic surfaces on AA6082 aluminum alloy by chemical etching in an HF/HCl solution, followed by silane self-assembling, was applied for enhanced corrosion protection in the marine field. In particular, different etching times were considered in order to optimize the treatment effect. The results indicate that all the prepared surfaces, after silanization, were characterized by superhydrophobic behavior with a contact angle higher than 150°. The contact and sliding angles strongly depend on the surface morphology at varying etching times. The optimum was observed with an etching time of 20 s, where a microscale coral-like structure coupled with a homogeneous and ordered pixel-like nanostructure was obtained on the aluminum surface showing a Cassie–Baxter superhydrophobic behavior with a water contact angle of 180° and a sliding angle equal to 0°. All superhydrophobic surfaces achieved an enhanced corrosion protection efficiency and impedance modulus up to two orders of magnitude higher than the as-received AA6082 in simulated seawater.https://www.mdpi.com/1996-1944/15/23/8549super-hydrophobicityself-assemblingaluminum alloysurface treatmentcorrosion |
| spellingShingle | Amani Khaskhoussi Luigi Calabrese Edoardo Proverbio Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer Materials super-hydrophobicity self-assembling aluminum alloy surface treatment corrosion |
| title | Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer |
| title_full | Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer |
| title_fullStr | Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer |
| title_full_unstemmed | Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer |
| title_short | Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer |
| title_sort | anticorrosion superhydrophobic surfaces on aa6082 aluminum alloy by hf hcl texturing and self assembling of silane monolayer |
| topic | super-hydrophobicity self-assembling aluminum alloy surface treatment corrosion |
| url | https://www.mdpi.com/1996-1944/15/23/8549 |
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