Author/Authors :
Chang، نويسنده , , Kung-Chin and Hsu، نويسنده , , Min-Hsiang and Lu، نويسنده , , Hsin-Yao and Lai، نويسنده , , Meichun and Liu، نويسنده , , Pei-Ju and Hsu، نويسنده , , Chien-Hua and Ji، نويسنده , , Wei-Fu and Chuang، نويسنده , , Tsao-Li and Wei، نويسنده , , Yen and Yeh، نويسنده , , Jui-Ming and Liu، نويسنده , , Wei-Ren، نويسنده ,
Abstract :
Nanocasting was used to develop epoxy/graphene composites (EGCs) as corrosion inhibitors with hydrophobic surfaces (HEGC). The contact angle of water droplets on a sample surface can be increased from ∼82° (epoxy surface) to ∼127° (hydrophobic epoxy and EGC). It should be noted that EGC coating was found to provide an excellent corrosion protection effect on cold-rolled steel (CRS) electrode. Enhancement of corrosion protection using EGC coatings could be attributed to the following three reasons: (1) epoxy could act as a physical barrier coating, (2) the hydrophobicity repelled the moisture and further reduced the water/corrosive media adsorption on the epoxy surface, preventing the underlying metals from corrosion attack, and (3) the well-dispersed graphene nanosheets (GNSs) embedded in HEGC matrix could prevent corrosion owing to a relatively higher aspect ratio than clay platelets, which enhances the oxygen barrier property of HEGC.
