Microporous micro-arc oxidation/bis-[3-triethoxysilylpropyl] tetrasulfide/graphene composite film with improved corrosion protection properties on aluminum alloy

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.

Automated summary

A composite film consisting of micro-arc oxidation, bis-[3-triethoxysilopropyl] tetrasulfide, and reduced graphene oxide was successfully prepared on an AA6061 surface using a combination of micro-arc oxidation and self-assembly. The dense composite film effectively prevented corrosive media from contacting the aluminum alloy, thereby protecting the substrate.