Academic Journal
Superhydrophobic Self-Assembled Silane Monolayers on Hierarchical 6082 Aluminum Alloy for Anti-Corrosion Applications
| العنوان: | Superhydrophobic Self-Assembled Silane Monolayers on Hierarchical 6082 Aluminum Alloy for Anti-Corrosion Applications |
|---|---|
| المؤلفون: | Khaskhoussi, Amani, Calabrese, Luigi, Proverbio, Edoardo |
| سنة النشر: | 2020 |
| المجموعة: | Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
| مصطلحات موضوعية: | Fluid Flow and Transfer Processes, Computer Science Applications, Process Chemistry and Technology, General Engineering, Instrumentation, General Materials Science |
| الوصف: | In this work, a two-stage methodology to design super-hydrophobic surfaces was proposed. The first step consists of creating a rough nano/micro-structure and the second step consists of reducing the surface energy using octadecyltrimethoxysilane. The surface roughening was realized by three different short-term pretreatments: (i) Boiling water, (ii) HNO3/HCl etching, or (iii) HF/HCl etching. Then, the surface energy was reduced by dip-coating in diluted solution of octadecyltrimethoxysilane to allow the formation of self-assembled silane monolayers on a 6082-T6 aluminum alloy surface. Super-hydrophobic aluminum surfaces were investigated by SEM-EDS, FTIR, profilometry, and contact and sliding angles measurements. The resulting surface morphologies by the three approaches were structured by a dual hierarchical nano/micro-roughness. The surface wettability varied with the applied roughening pretreatment. In particular, an extremely high water contact angle (around 180°) and low sliding angle (0°) were evidenced for the HF/HCl-etched silanized surface. The results of electrochemical tests demonstrate a remarkable enhancement of the aluminum alloy corrosion resistance through the proposed superhydrophobic surface modifications. Thus, the obtained results evidenced that the anti-wetting behavior of the aluminum surface can be optimized by coupling an appropriate roughening pretreatment with a self-assembled silane monolayer deposition (to reduce surface energy) for anticorrosion application. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | url:https://www.openaccessrepository.it/communities/itmirror; https://www.openaccessrepository.it/record/173210 |
| DOI: | 10.3390/app10082656 |
| الاتاحة: | https://www.openaccessrepository.it/record/173210 https://doi.org/10.3390/app10082656 |
| Rights: | info:eu-repo/semantics/openAccess ; http://www.opendefinition.org/licenses/cc-by |
| رقم الانضمام: | edsbas.EB8A141 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3390/app10082656 |
|---|