Next Article in Journal
Fast Terahertz Coded-Aperture Imaging Based on Convolutional Neural Network
Next Article in Special Issue
Cu Nano-Roses Self-Assembly from Allium cepa, L., Pyrolysis by Green Synthesis of C Nanostructures
Previous Article in Journal
Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera
Previous Article in Special Issue
Polysaccharides-Reinforced Bitumens: Specificities and Universality of Rheological Behavior
Open AccessArticle

Superhydrophobic Self-Assembled Silane Monolayers on Hierarchical 6082 Aluminum Alloy for Anti-Corrosion Applications

1
National Interuniversity Consortium of Materials Science and Technology, INSTM, Via Giuseppe Giusti 9, 50121 Firenze, Italy
2
Department of Engineering, University of Messina, Contrada di Dio Sant’Agata, 98166 Messina, Italy
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(8), 2656; https://doi.org/10.3390/app10082656
Received: 10 March 2020 / Revised: 9 April 2020 / Accepted: 10 April 2020 / Published: 12 April 2020
(This article belongs to the Special Issue Self-Assembly in Chemistry and Supramolecular Chemistry)
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. View Full-Text
Keywords: superhydrophobicity; self-assembly; anticorrosion; aluminum superhydrophobicity; self-assembly; anticorrosion; aluminum
Show Figures

Figure 1

MDPI and ACS Style

Khaskhoussi, A.; Calabrese, L.; Proverbio, E. Superhydrophobic Self-Assembled Silane Monolayers on Hierarchical 6082 Aluminum Alloy for Anti-Corrosion Applications. Appl. Sci. 2020, 10, 2656. https://doi.org/10.3390/app10082656

AMA Style

Khaskhoussi A, Calabrese L, Proverbio E. Superhydrophobic Self-Assembled Silane Monolayers on Hierarchical 6082 Aluminum Alloy for Anti-Corrosion Applications. Applied Sciences. 2020; 10(8):2656. https://doi.org/10.3390/app10082656

Chicago/Turabian Style

Khaskhoussi, Amani; Calabrese, Luigi; Proverbio, Edoardo. 2020. "Superhydrophobic Self-Assembled Silane Monolayers on Hierarchical 6082 Aluminum Alloy for Anti-Corrosion Applications" Appl. Sci. 10, no. 8: 2656. https://doi.org/10.3390/app10082656

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop