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Coatings 2018, 8(2), 70; doi:10.3390/coatings8020070

Corrosion Resistance and Durability of Superhydrophobic Copper Surface in Corrosive NaCl Aqueous Solution

1
Department of Mechanical Engineering, Lamar University, Beaumont, TX 77710, USA
2
Department of Biology, Lamar University, Beaumont, TX 77710, USA
3
Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA
4
Transportation and Hydrogen Systems Center, National Renewable Energy Laboratory, Golden, CO 80401, USA
*
Author to whom correspondence should be addressed.
Received: 20 December 2017 / Revised: 8 February 2018 / Accepted: 9 February 2018 / Published: 11 February 2018
(This article belongs to the Special Issue Superhydrophobic Coatings)
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Abstract

Artificial superhydrophobic copper surfaces play an important role in modern applications such as self-cleaning and dropwise condensation; however, corrosion resistance and durability often present as major concerns in such applications. In this study, the anti-corrosion properties and mechanical durability of superhydrophobic copper surface have been investigated. The superhydrophobic copper surfaces were achieved with wet chemical etching and an immersion method to reduce the complexity of the fabrication process. The surface structures and materials were characterized using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), and Fourier transform infrared spectrometer (FTIR). The corrosion resistance and mechanical properties of the superhydrophobic copper surface were characterized after immersing surfaces in a 3.5 wt % NaCl solution. The chemical stability of the superhydrophobic copper surface in the NaCl solution for a short period of time was also evaluated. An abrasion test and an ultrasound oscillation were conducted to confirm that the copper surface contained durable superhydrophobic properties. In addition, an atomic force microscope was employed to study the surface mechanical property in the corrosion conditions. The present study shows that the resulting superhydrophobic copper surface exhibit enhanced corrosion resistance and durability. View Full-Text
Keywords: superhydrophobic copper surface; anti-corrosion; durability; AFM superhydrophobic copper surface; anti-corrosion; durability; AFM
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yao, C.-W.; Sebastian, D.; Lian, I.; Günaydın-Şen, Ö.; Clarke, R.; Clayton, K.; Chen, C.-Y.; Kharel, K.; Chen, Y.; Li, Q. Corrosion Resistance and Durability of Superhydrophobic Copper Surface in Corrosive NaCl Aqueous Solution. Coatings 2018, 8, 70.

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