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Research Article

Solution-processed highly adhesive graphene coatings for corrosion inhibition of metals

Gi-Cheol Son1,§, Deuk-Kyu Hwang3,§, Jaewon Jang1, Sang-Soo Chee1, Kyusang Cho1, Jae-Min Myoung3(), Moon-Ho Ham1,2()
School of Materials Science and Engineering,Gwangju Institute of Science and Technology (GIST),123 Cheomdangwagi-ro, Buk-gu,Gwangju61005,Republic of Korea;
Research Institute for Solar and Sustainable Energies,Gwangju Institute of Science and Technology (GIST),123 Cheomdangwagi-ro, Buk-gu,Gwangju61005,Republic of Korea;
Department of Materials Science and Engineering,Yonsei University,50 Yonsei-ro, Seodaemun-gu,Seoul03722,Republic of Korea

§ Gi-Cheol Son and Deuk-Kyu Hwang contributed equally to this work.

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Abstract

The corrosion of metals can be induced by different environmental and operational conditions, and protecting metals from corrosion is a serious concern in many applications. The development of new materials and/or technologies to improve the efficiency of anti-corrosion coatings has attracted renewed interest. In this study, we develop a protective coating composed of a bilayer structure of reduced graphene oxide (RGO)/graphene oxide (GO) applied to Cu plates by spray-coating and subsequent annealing. The annealing of the GO/Cu plates at 120 ℃ produces a bilayer structure of RGO/GO by the partial reduction of the spray-coated GO layer. This induces superior corrosion resistance and adhesion strength compared to those of GO/Cu and RGO/Cu plates because of the hydrophobic nature of the RGO surface exposed to the surroundings and the formation of Cu-O bonds with the O-based functional groups of GO. This approach provides a viable and scalable route for using graphene coatings to protect metal surfaces from corrosion.

Keywords

graphenemetalsurface coatingcorrosionsolution process

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Nano Research
Volume 12 Issue 1,
January 2019
Pages 19-23
DOI: 10.1007/s12274-018-2056-2
Cite this article:
Son G-C, Hwang D-K, Jang J, et al. Solution-processed highly adhesive graphene coatings for corrosion inhibition of metals. Nano Research, 2019, 12(1): 19-23. https://doi.org/10.1007/s12274-018-2056-2
Topics:
Copper corrosionGrapheneMetals
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