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Electrochemical behaviour of superhydrophobic coating fabricated by spraying a carbon nanotube suspension

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Abstract

In this study, superhydrophobic films were prepared through a spraying process of carbon nanotube (CNT) suspension on aluminium alloy substrate and characterized by scanning electronic microscope (SEM) contact angles (CAs) and potentiodynamic polarization tests in 0.1 M NaCl solution. Results indicate the positive effect of superhydrophobic film on the CA (>160°) in comparison with the bare metal due to the high porosity density at the surface caused by the presence of CNTs. The electrochemical observations indicate the presence of a positive shift of E corr that confers a better corrosion resistance of the coated samples.

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Acknowledgements

This study is supported by a research grant from The Mazda Foundation and has been partially funded by the Flagship Project RITMARE—The Italian Research for the Sea—coordinated by the Italian National Research Council and funded by the Italian Ministry of Education, University and Research within the National Research Program 2011–2013. We would like to thank Dr Giuliano Greco for providing useful suggestions on the writing of the present paper

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Correspondence to L BELSANTI.

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BELSANTI, L., OGIHARA, H., MAHANTY, S. et al. Electrochemical behaviour of superhydrophobic coating fabricated by spraying a carbon nanotube suspension. Bull Mater Sci 38, 579–582 (2015). https://doi.org/10.1007/s12034-015-0866-3

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  • DOI: https://doi.org/10.1007/s12034-015-0866-3

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