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Corrosion Resistance of Electro-brush Plating Ni-graphene Composite Coatings
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nstitute of Corrosion Science and Surface Technology, School of Materials Science and Chemical Engineering, Harbin Engineering University

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    Abstract:

    In order to obtain a metal coating with excellent corrosion resistance and a simple preparation process is applied to navy vessel corrosion protection, Ni-graphene composite coating was grown on 45 steel substrates by electro-brush plating, Scanning electron microscope(SEM),energy dispersive spectrometer(EDS),atomic electron microscopy(AFM) and Raman spectroscopy were employed to characterize graphene,and morphology of the coatings, The corrosion resistance of Ni-graphene composite coatings was studied by electrochemical experiment and immersion test. Results show that the graphene layers enters the Ni-graphene composite coating, compared with Ni coating, the quality of Ni-graphene composite coating is better. In electrochemical experiments and immersion test, we found that Ni-GE composite coating compared with Ni plating, the corrosion resistance of the former than the latter is 70 mV, the corrosion current density of the former was only 0.34 times that of the latter, the former of the charge transfer resistance is 3.1 times of that for the latter; After immerse 168 h, the weight loss of Ni- graphene composite coating was 0.47 times of Ni plating layer, indicating that the corrosion resistance of Ni- graphene composite coating was obviously enhanced.

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[JIN Guo, dingxiaolong, HU Zhenfeng, LV Biao, WANG Xiaohe. Corrosion Resistance of Electro-brush Plating Ni-graphene Composite Coatings[J]. Rare Metal Materials and Engineering,2019,48(6):2002~2008.]
DOI:10.12442/j. issn.1002-185X.20171143

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History
  • Received:December 13,2017
  • Revised:December 28,2017
  • Adopted:January 10,2018
  • Online: July 30,2019
  • Published: