Surface modification of Al alloy by self-assembly dodecyl phosphate/cerium composite film as relevant to offshore floating photovoltaic power

Abstract

Purpose This paper aims to prepare a composite film on LY12 aluminum (Al) alloy by immersing in dodecyl phosphate and cerium nitrate solution by self-assembling methods. The effect of dipping sequence in dodecyl phosphate and cerium nitrate solution on the corrosion resistance of the composite film is studied. Design/methodology/approach The corrosion resistance of the dodecyl phosphate/cerium composite film is investigated by electrochemical measurement and film composition analysis. Findings The dipping sequence in dodecyl phosphate and cerium nitrate solutions has a significant impact on the corrosion resistance of the composite film. It shows best corrosion resistance by first dipping in dodecyl phosphate and then dipping in cerium nitrate solution. Originality/value The research shown in this work lays a scientific basis of the film preparation for industrial applications in the future.