Corrosion inhibition of Cu in sulphate solution
By A. A. El Warraky and A. E. El Meleigy
Copper, potentiostatic polarization, sulphate ions, copper corrosion inhibitors
A synergistic effect exists between ethylene diamine (EDA) and benzotriazole (BTAH) to prevent the corrosion of copper in 0.1 M Na2SO4. This effect has been studied using potentiostatic polarization, Tafel line polarization as well as weight loss measurements and scanning electron microscopy (SEM). The results show that EDA alone acts as a promoter while the presence of BTAH can facilitate the adsorption of BTAH on the copper surface to become more effective and increase the inhibition efficiency from 65 % to 99.45 %.
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