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| Simulation Analysis on Galvanic Corrosion Behavior of Modified Epoxy Coating |
| Received:December 11, 2022 Revised:May 09, 2023 |
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| DOI：10.7643/issn.1672-9242.2023.08.009 |
| KeyWord:galvanic corrosion computational simulation finite element calculation marine equipment reduction of graphene oxide anticorrosive coating |
| Author | Institution |
| DAI Ya-guang |
Shenyang Aircraft Design Institute of Aviation Industry, Shenyang , China |
| ZHANG Yong |
Naval Aviation University Qingdao Campus, Shandong Qingdao , China |
| FAN Wei-jie |
Naval Aviation University Qingdao Campus, Shandong Qingdao , China |
| YANG Wen-fei |
Naval Aviation University Qingdao Campus, Shandong Qingdao , China |
| SONG Yu-hang |
Naval Aviation University Qingdao Campus, Shandong Qingdao , China |
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| Abstract: |
| The work aims to realize the galvanic corrosion behavior analysis of titanium dioxide-reduced graphene oxide anticorrosive coatings in marine engineering applications. With reduced graphene oxide and titanium dioxide as nanofillers, a modified epoxy anticorrosive coating was prepared. With this coating as a model, the finite element calculation software was used to study the effect of the coating on inhibiting metal galvanic corrosion under the condition of micro defects in the modified epoxy coating. The modified epoxy coating could effectively inhibit metal galvanic corrosion; the inhibition degree of the defect coating on galvanic corrosion was calculated under different hole widths and distributions. It was found that when the hole width of the defect coating was 500 μm and the area ratio of the cathode to anode was 2:1, the minimum potential difference was 1.05×10–6 V, which could effectively inhibit galvanic corrosion. The addition of titanium dioxide-reduced graphene oxide can fill the coating gap, hinder water penetration, and effectively improve the corrosion resistance of the epoxy coating. Using finite element simulation, it can be obtained that serious local corrosion will occur when the coating is damaged, which will eventually cause the failure of the engineering structure. |
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