A study on the phytochemical analysis and corrosion inhibition on mild steel by Annona Muricata .L leaves extract in 1 N hydrochloric acid

Extract of Annona muricata L. leaves was investigated as a corrosion inhibitor of mild steel in 1 N HCl using conventional weight loss, electrochemical polarization, electrochemical impedance spectroscopy, and scanning electron microscopic studies. The weight loss results showed that the extract of Annona muricata L leaves is an excellent corrosion inhibitor, electrochemical polarization data revealed the mixed mode of inhibition, and the results of electrochemical impedance spectroscopy have shown that the change in the impedance parameters, charge transfer resistance, and double layer capacitance, with the change in concentration of the extract, is due to the adsorption of active molecules leading to the formation of a protective layer on the surface of mild steel. Scanning electron microscope studies provided the confirmatory evidence of an improved surface condition, due to the adsorption, for the corrosion protection

Author(s): J. Rosaline Vimala1, A. Leema Rose1 and S. Raja2

Abstract | PDF

Share This Article