▎ 摘　　要

A simple route was developed to prepare graphene coating on mild steel (MS) balls by mechanical ball-milling. In order to facilitate the interface reaction, we introduced Ti layer onto the MS surface (Ti/MS) through vacuum deposition. The graphene coatings were prepared by ball-milling on a buffer Ti/MS double-layered structure, and were strongly bonded to the substrate via TiC. The corrosion rate of graphene-covered MS was only 8.2 nm day(-1), which was much less than that of the bare MS (794.5 nm day(-1)). The corrosion resistance was up to 38676 Omega cm(2), which was almost two orders of magnitude higher than that of the bare MS (369 Omega cm(2)). Moreover, the graphene coating demonstrated stable and long-term anticorrosive performance after 30 days immersion. The present study lights on expanding the applications of graphene coatings to a wider range. (C) 2019 Elsevier B.V. All rights reserved.