| CHENG Hong-hong,LIU Shuan,WANG Juan,ZHANG Ren-kun,ZHAO Xiao-dong,GUO Xiao-ping,PU Ji-bin,WANG Li-ping.Anticorrosion Mechanism of Graphene Anticorrosive Coating in Oil Tank Sedimentary Water[J],46(11):83-89 |
| Anticorrosion Mechanism of Graphene Anticorrosive Coating in Oil Tank Sedimentary Water |
| Received:May 04, 2017 Revised:November 20, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.11.012 |
| KeyWord:oil tank graphene composite coating sedimentary water electrochemical impedance corrosion mechanism protective mechanism |
| Author | Institution |
| CHENG Hong-hong |
1.School of Ship and Electromechanical Engineering, Zhejiang Ocean University, Zhoushan , China; 2.Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo , China |
| LIU Shuan |
1.School of Ship and Electromechanical Engineering, Zhejiang Ocean University, Zhoushan , China; 2.Wuhu Spring New Material Co., Ltd, Wuhu , China |
| WANG Juan |
School of Ship and Electromechanical Engineering, Zhejiang Ocean University, Zhoushan , China |
| ZHANG Ren-kun |
School of Ship and Electromechanical Engineering, Zhejiang Ocean University, Zhoushan , China |
| ZHAO Xiao-dong |
School of Ship and Electromechanical Engineering, Zhejiang Ocean University, Zhoushan , China |
| GUO Xiao-ping |
Wuhu Spring New Material Co., Ltd, Wuhu , China |
| PU Ji-bin |
1.School of Ship and Electromechanical Engineering, Zhejiang Ocean University, Zhoushan , China; 2.Wuhu Spring New Material Co., Ltd, Wuhu , China |
| WANG Li-ping |
1.School of Ship and Electromechanical Engineering, Zhejiang Ocean University, Zhoushan , China; 2.Wuhu Spring New Material Co., Ltd, Wuhu , China |
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| Abstract: |
| The work aims to explore protective mechanism of grapheme-based protective coating/carbon steel system in sedimentary water of crude oil storage tank. With the sedimentary water of actual oil storage as corrosive medium, and self-made graphene primer and graphene finish paint as protective coating system, electrochemical impedance spectroscopy, potentiodynamic polarization curves in combination with salt spray test were used to investigate corrosion behavior and failure derivation mechanism of graphene coating system in sedimentary water. The graphene primer had certain protective effect on carbon steel in initial period of soaking. Water molecules penetrated into the coating gradually and the coating failed gradually as the soaking duration prolonged. The protective effect of the coating on the carbon steel in the sedimentary water could be significantly improved by the combination of the graphene primer and graphene finish paint. After 46 days of soaking, the coating resistance of graphene composite coating was still 162 MΩ•cm. The graphene primer + graphene finish paint coating system has excellent protective effect on oil tank baseplate in the sedimentary water. The study results have theoretical guiding significance on coating material selection of oil tank baseplate. |
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