▎ 摘　　要

We report the use of self-assembled graphene oxides (GO)/8-hydroxyquinoline (8-Hq) /inorganic coating (IC) hybrid materials as protective materials that inhibits corrosion of underlying metals. We present the fabrication of a multilayer coating, GO/8-Hq/IC, combining graphene oxide and flowerlike organic-inorganic materials using a defective coating as the inorganic compounds and graphene oxides with 8-hydroxyquinoline as the organic compounds. The 8-Hq molecules form coordination complexes with metal ions (Mg (II) and Al (III)) from porous inorganic coating layer, and these complexes become knot sites for molecular self-assembly of 8-Hq and then GO particles. Physical adsorption between the molecular self-assembly of 8-Hq and GO particles leads to the growth of micrometer-sized particles that have nanoscale features. Finally, the extraordinary electrochemical stability was enhanced in the order GO/8-Hq/IC, 8-Hq/IC, and IC, which was discussed on the basis of polarization interpretation. The findings indicate that AZ31 Mg coated with the self-assembled GO/8-Hq/IC materials grown via plasma electrolytic oxidation and dip-chemical coating are corroded several times slower in aggressive solution as compared to corrosion rate of bare magnesium.