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Issue 98, 2014
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Facile fabrication of a robust and corrosion resistant superhydrophobic aluminum alloy surface by a novel method

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Abstract

This work reports a novel method involving anodic oxidation and a self-assembly process for controllable fabrication of a robust superhydrophobic aluminum (Al) alloy surface. The superhydrophobic surface with a water contact angle of 157.5 ± 0.5° and a sliding angle of 3 ± 0.7° is derived from its hierarchical micro-nanostructure and the assembly of low surface energy fluorinated components on it. Furthermore, the transformation from superhydrophilicity to superhydrophobicity can be achieved by adjusting the modification process for the constructed surface. The anti-scratch tests show that the superhydrophobic surface has good mechanical stability. It maintains superhydrophobicity after mechanical abrasion against P400 grit SiC sandpaper for 0.4 m and P800 grit sandpaper for 0.8 m, at the applied pressure of 3.60 kPa. The potentiodynamic polarization and electrochemical impedance spectroscopy tests show that the as-prepared superhydrophobic surface has excellent corrosion resistance. In addition, the as-prepared superhydrophobic surface has self-cleaning ability and good long-term stability. It is believed that the facile fabrication process offers an effective and promising application for fabricating a robust, anticorrosive and large scale superhydrophobic Al alloy surface.

Graphical abstract: Facile fabrication of a robust and corrosion resistant superhydrophobic aluminum alloy surface by a novel method

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Publication details

The article was received on 28 Aug 2014, accepted on 23 Oct 2014 and first published on 23 Oct 2014


Article type: Paper
DOI: 10.1039/C4RA09390A
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2014,4, 55556-55564
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    Facile fabrication of a robust and corrosion resistant superhydrophobic aluminum alloy surface by a novel method

    C. Liu, F. Su and J. Liang, RSC Adv., 2014, 4, 55556
    DOI: 10.1039/C4RA09390A

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