Study of Formazan Derivative Inhibitor Used to Prevent the Mild Steel Material Used in the Construction of Ship Material

Abstract

Formazan of p-dimethyl amino benzaldehyde (FD) has been prepared as an inhibitor to control the rate of corrosion. This compound has been studied as corrosion inhibitor for mild steel in hydrochloric acid and citric acid by weight loss method at different time interval at room temperature. The result showed that the corrosion inhibition efficiency of these compounds was found to vary with different time interval and different acid concentration. It was also found that the corrosion inhibition behaviour of formazan of p-dimethyl amino benzaldehyde is greater in 2 N hydrochloric acid than 2 N citric acid. So formazan of p-dimethyl amino benzaldehyde can be used as good inhibitor for preventing mild steel material which is used in the construction ship material. The surface analysis study also confirms the corrosion of the mild steel and its inhibition by the formazan of p-dimethyl amino benzaldehyde.