Corrosion Resistance and Mechanism of Aniline Reduction-Induced Oxidation Graphene/Fe3O4 Nanocomposites
RGO/Fe3O4 binary nanocomposites were prepared by combining restore oxidation graphene(rGO)with Fe3O4 and reducing it with aniline as a reducing agent.Then aniline underwent in-situ oxidation polymerization on the surfaces of Fe3O4 and rGO to form polyaniline(PANI).Finally,the rGO/Fe3O4 composite material was coated with polyaniline,and a multi-layered rGO/Fe3O4/PANI/EP composite coating was prepared using waterborne epoxy resin(EP)as a filler.The corrosion resistance and mechanism of rGO/Fe3O4/PANI/EP coatings were studied using Tafel polarization curves,electrochemical impedance spectroscopy,neutral salt spray testing,and photoelectro spectroscopy.The results showed that the RGO/Fe3O4/PANI/EP coatings had the best salt spray resistance,good dispersion,and stability compared to pure epoxy coatings and rGO/Fe3O4/EP coatings.The anti-corrosion mechanism of the composite material was the high efficiency barrier performance of graphene and the electrochemical intelligent passivation effect of PANI enhanced by the ternary composite material.
ternary nanocompositesoxidation grapheneFe3O4plyanilinecorrosion resistance and mechanism
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