Abstract
Corrosion is a key concern for metal industries. Metallic oxidation due to the environment results in a major loss of metal over a span of time. Therefore, a protective coating such as hydrophobic coating is highly desired to avoid moisture in order to provide longevity of the metal. Superhydrophobic surfaces can be produced by controlling the surface roughness of numerous materials and their surface chemistry. In this study, a facile, eco-friendly and low cost sol-gel method for producing superhydrophobic coating on aluminium metal substrates has been reported. The aluminium metal surface was initially roughened using abrasive paper of appropriate grade. Then etching of metal surface was performed using a mixture of de-ionized water, HCl and Acetic Acid respectively in the ratio 20:8:1. The etching time was varied to control the surface roughness of the substrate. Subsequently polystyrene/SiO2 superhydrophobic coating on aluminium metal substrate was produced. The contact angle was directly measured on the sample surfaces using drop shape analyser. The roughness was characterized by atomic force microscopy (AFM).
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Acknowledgements
The authors acknowledge Inter-university Accelerator Centre (IUAC), New Delhi [Sanction Order No.: UFR-51307, dated: 04.01.2012] for the financial support.
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Mahato, S. et al. (2018). Development of Polystyrene/SiO2 Superhydrophobic Coating on Metal Substrates for Corrosion Protection. In: Anand, G., Pandey, J., Rana, S. (eds) Nanotechnology for Energy and Water . ICNEW 2017. Springer Proceedings in Energy. Springer, Cham. https://doi.org/10.1007/978-3-319-63085-4_4
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DOI: https://doi.org/10.1007/978-3-319-63085-4_4
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