Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive Coating
Graphene-modified anticorrosion coatings have become a hot spot in the field of metal protection due to the large-scale promotion of aluminum alloys, which are prone to corrosion in marine and atmospheric environments. The protection of aluminum alloy surfaces by a graphene-modified anticorrosive co...
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Wiley
2020-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2020/8835737 |
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| author | Peng Wang Dayong Cai |
| author_facet | Peng Wang Dayong Cai |
| author_sort | Peng Wang |
| collection | DOAJ |
| description | Graphene-modified anticorrosion coatings have become a hot spot in the field of metal protection due to the large-scale promotion of aluminum alloys, which are prone to corrosion in marine and atmospheric environments. The protection of aluminum alloy surfaces by a graphene-modified anticorrosive coating was explored in this study by applying a graphene-modified anticorrosive coating to an aluminum alloy surface to test its resistance to corrosion. Dispersion-treated reduced graphene oxide (rGO) was used to modify the epoxy resin and fluorocarbon resin. It was found, by using a scanning electron microscopy (SEM) and the microstructure of the coating made by the Raman Spectroscopy Institute, that the addition of rGO could effectively improve the porosity of the epoxy primer, and the electrochemical workstation was able to resist the graphene-modified anticorrosive coating. The corrosion performance was quickly characterized, the polarization curve and the AC impedance curve were fitted, and it was found that the self-corrosion current density (Jcorr) of the graphene-modified anticorrosive coating was the smallest (1.190×10−7 A/cm2) when 0.6% of rGO was added; the impedance modulus (∣Z∣) was the largest (104), the capacitive reactance arc radius was the largest, and the coating resistance was the largest after fitting (15517 Ω). When 0.8% of rGO was added, the dispersion coefficient was large, and it had a good physical insulation performance. The main reason for the reduction of the corrosion resistance was that the agglomeration of rGO made the aluminum alloy matrix and the external corrosive environment form a highly conductive circuit, thereby accelerating the corrosion of the aluminum alloy matrix. |
| format | Article |
| id | doaj-art-9e48d0d0ae164802ad06ddfa33b73dea |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
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| series | International Journal of Photoenergy |
| spelling | doaj-art-9e48d0d0ae164802ad06ddfa33b73dea2025-02-03T01:20:21ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2020-01-01202010.1155/2020/88357378835737Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive CoatingPeng Wang0Dayong Cai1College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, ChinaCollege of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, ChinaGraphene-modified anticorrosion coatings have become a hot spot in the field of metal protection due to the large-scale promotion of aluminum alloys, which are prone to corrosion in marine and atmospheric environments. The protection of aluminum alloy surfaces by a graphene-modified anticorrosive coating was explored in this study by applying a graphene-modified anticorrosive coating to an aluminum alloy surface to test its resistance to corrosion. Dispersion-treated reduced graphene oxide (rGO) was used to modify the epoxy resin and fluorocarbon resin. It was found, by using a scanning electron microscopy (SEM) and the microstructure of the coating made by the Raman Spectroscopy Institute, that the addition of rGO could effectively improve the porosity of the epoxy primer, and the electrochemical workstation was able to resist the graphene-modified anticorrosive coating. The corrosion performance was quickly characterized, the polarization curve and the AC impedance curve were fitted, and it was found that the self-corrosion current density (Jcorr) of the graphene-modified anticorrosive coating was the smallest (1.190×10−7 A/cm2) when 0.6% of rGO was added; the impedance modulus (∣Z∣) was the largest (104), the capacitive reactance arc radius was the largest, and the coating resistance was the largest after fitting (15517 Ω). When 0.8% of rGO was added, the dispersion coefficient was large, and it had a good physical insulation performance. The main reason for the reduction of the corrosion resistance was that the agglomeration of rGO made the aluminum alloy matrix and the external corrosive environment form a highly conductive circuit, thereby accelerating the corrosion of the aluminum alloy matrix.http://dx.doi.org/10.1155/2020/8835737 |
| spellingShingle | Peng Wang Dayong Cai Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive Coating International Journal of Photoenergy |
| title | Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive Coating |
| title_full | Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive Coating |
| title_fullStr | Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive Coating |
| title_full_unstemmed | Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive Coating |
| title_short | Study of the Protection of Aluminum Alloy Surfaces by a Graphene-Modified Fluorocarbon Anticorrosive Coating |
| title_sort | study of the protection of aluminum alloy surfaces by a graphene modified fluorocarbon anticorrosive coating |
| url | http://dx.doi.org/10.1155/2020/8835737 |
| work_keys_str_mv | AT pengwang studyoftheprotectionofaluminumalloysurfacesbyagraphenemodifiedfluorocarbonanticorrosivecoating AT dayongcai studyoftheprotectionofaluminumalloysurfacesbyagraphenemodifiedfluorocarbonanticorrosivecoating |