Electrochemistry and inhibitory evaluation of Musa paradisiaca particulates on AA6063 alloy for improved service life
O.S.I. Fayomi, Joshua O. Atiba, Khadijah T. Dauda
Abstract
Recent study has concentrated on the corrosion-inhibiting properties of numerous local plants and agrowaste particulates. This research investigates the corrosion inhibition properties of plantain peel particulates (PP) on AA6063 aluminum alloy in 1 M HCl environments. Through electrochemical analysis, adsorption examination, mathematical optimization and surface morphology examination, PP's efficacy as an inhibitor was assessed. Results indicate a reduction in corrosion rate from 31.2195 mm/year (control) to 10.678 mm/yr(year) (0.6 g PP). Adsorption isotherm studies reveal favorable adsorption characteristics, with Langmuir and Freundlich models showing high regression coefficients. The Gibbs free energy of adsorption (−18.3669 kJ/mol) suggests chemical adsorption. Empirical optimization using Design of Experiment (DOE) and ANOVA indicates optimal inhibition at 33 °C with 0.229 g PP concentration.