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Issue 63, 2017, Issue in Progress
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Influence of ambient conditions on the evolution of wettability properties of an IR-, ns-laser textured aluminium alloy

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Abstract

Micro cell structures of different sizes were patterned using a nanosecond near-infrared laser source on Al2024 aluminium alloy plates with 2 mm thickness. The influence of laser parameters on the shape and size of the produced patterns were studied together with the evolution of wettability properties over time for different storage conditions. Samples were found to be superhydrophobic from a single step laser patterning, requiring no further treatment. Exposure to ambient air was shown to be a key factor in the property changes of the samples over time. The produced surface patterns with different laser parameter settings were correlated with the contact angle measurements, revealing a great influence of the amount of recast material on the hydrophobic properties. X-Ray photoelectron spectroscopy was used to study the impact of surface chemistry changes on hydrophobicity, analysis of elemental composition proved that chemisorbed organic molecules present in the ambient air were responsible for the hydrophilic to superhydrophobic transition.

Graphical abstract: Influence of ambient conditions on the evolution of wettability properties of an IR-, ns-laser textured aluminium alloy

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Article information


Submitted
05 Jul 2017
Accepted
06 Aug 2017
First published
14 Aug 2017

This article is Open Access

RSC Adv., 2017,7, 39617-39627
Article type
Paper

Influence of ambient conditions on the evolution of wettability properties of an IR-, ns-laser textured aluminium alloy

J. T. Cardoso, A. Garcia-Girón, J. M. Romano, D. Huerta-Murillo, R. Jagdheesh, M. Walker, S. S. Dimov and J. L. Ocaña, RSC Adv., 2017, 7, 39617
DOI: 10.1039/C7RA07421B

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