Abstract
In this study, sustainable waste agri biomass (WAB) was used to create defective green graphene (GGs) by physical, chemical, and thermal treatment at various temperature regimes (350 °C to 750 °C). The anti-corrosion performance of the GGs as reinforcement into an epoxy matrix was analyzed by electrochemical techniques (Tafel, EIS). The electrochemical results show the GG-400/EP composite coating was 93.9 % higher in corrosion resistance than uncoated carbon steel. The GG-400/EP composite coating shows improvement in surface roughness (25.35 %), hydrophobicity (64 %), and hardness (245 %). The post-corrosion analysis reveals that Well-dispersed GGs in the EP matrix create a "labyrinth effect," enhancing anticorrosion properties.WAB being a natural material has many inherent functionalities, some of which may not be consonant in delivering the desired coating property, and thus, the thermally treated WAB, that is here known as GGs, needs appropriate refinement. The addition of GGs , however, produced changes in the elastic moduli of the coating that provides a unique property enhancement- yet unreported in normal coatings.
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