Anti-Corrosion and Passivation Potential of AA6063-Type Al-Mg-Si Alloy with Avogadro Natural Oil in HCl Solution

The electrochemical study of the passivation potential of AA6063-type Al-Mg-Si alloy in Avogadro Natural Oil/HCl Interface was studied using weight loss and potentiodynamic techniques. The result shows that the corrosion rate increases with an increase in exposure time but decrease as the concentration of inhibitor increases. The result of both weight loss and potentiodynamic show good agreement as can been seen that the inhibition efficiencies was found to increase as concentration of inhibitor increases. Equally the additive helps to retard the rate of corrosion and increase the polarization resistance thereby lowering the corrosion density of the system. The presence of the additive was also seen to affect both the cathodic and anodic half which shows that the inhibitor acts as a mixed-type inhibitor. The surface morphology of as-corroded samples assessed with scanning electron microscopy show that the attack was severely reduce in the presence of the Avogadro natural oil