A Study of Veronia Amygdalina Leaf Extract on Corrosion Resistance of 96%Al, 3.5%Zn and 0.5%Mg in Nacl Solution

Abstract

This paper presents a study of corrosion resistance of 96% Al, 3.5% Zn and 0.5% Mg using Veronia Amygdalina leaf extract as the inhibitor. The experiment was conducted in different concentration of Veronia Amygdalina (15, 30, 45, 60ml) at 4M Nacl solution. The experiment was evaluated using the weight or metal loss method. The results obtained were compared against a control experiment without addition of an inhibitor. The highest inhibitive effect was obtained at the corrosion rate of 0.34750mmpy at 240hrs in 30ml of aqueous extract of Veronia Amygdalina in Nacl solution.