▎ 摘　　要

Micro-arc oxidation, bis-[3-triethoxysilopropyl] tetrasulfide and reduced graphene oxide composite film was prepared on AA 6061 using a combination of micro-arc oxidation and self-assembly. The morphological, chemical characteristics.corrosion resistance and film formation mechanism of the composite film were studied. The results showed that a complete and dense composite film was formed on the surface of aluminum alloy, which may be due to the formation of Al-O-Si, Si-O-Si and Si-O-C chemical bonds on aluminum alloy by self-assembly doping technology. The composite film effectively prevented the corrosive medium from contacting the aluminum alloy, thus protecting the aluminum alloy substrate. (c) 2021 Elsevier B.V. All rights reserved.