Performance of GO/SiO2, GO/TiO2, and GO/ZrO2 Nanocomposites Coatings as a Corrosion Barrier Layer on Al-Si-Cu-Mg Alloy in 3.5 % NaCl Solution

The research target aimed to design of anodic oxide film layers on Al-Si-Cu-Mg alloy by modifying phosphoric acid anodizing and reinforcement by subsequent impregnation with graphene oxide (GO) nanosheets deposition effects (SiO 2 , TiO 2 and ZrO 2 ). The corrosion inhibition efficiency on the anticorrosion behavior of the coating layer (GO/SiO 2 , GO/TiO 2 , and GO/ZrO 2 ) nanocomposites were deposited by electro-deposition in 3.5 % NaCl solution. Complementary electrochemical measurements including estimate of weight reduction, chronoamperometric current-time and potentiodynamic polarization techniques showing the ability of the improved oxide layer with GO/ZrO 2 were more successful in preventing corrosion, which acts as a self-cleaning coating with a novelty few-layer GO nanosheets with GO/ZrO 2 . The surface morphology and elemental analysis of GO/SiO 2 , GO/TiO 2 and GO/ZrO 2 nanocomposites coating were evaluated by SEM, EDS and mapping of elemental distribution.