Layer-by-layer stacked graphene nanocoatings by Marangoni self-assembly for corrosion protection of stainless steel

The ultrathin layer-by-layer graphene coatings on stainless steel (SS) were fabricated through Marangoni self-assembly of graphene nanosheets. The anti-corrosion performance of the coatings were studied and the optimized 3-layer graphene coating achieve a corrosion potential increase of 0.15 V and a corrosion current density decrease of 1.23 × 10−7 A/cm2 comparing to SS.