Papaya peel extract as potential corrosion inhibitor for Aluminium alloy in 1 M HCl: Electrochemical and quantum chemical study
By Namrata Chaubey and Vinod Kumar Singh and M.A. Quraishi
Published in Ain Shams Engineering Journal
NULL
2016
Abstract
This paper deals with the corrosion inhibition effect of Papaya peel extract (PPE) on Aluminium alloy (AA) in 1 M HCl. The corrosion tests were performed by using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques (PDP). Maximum inhibition efficiency observed is 95.5% and 98.1% from \EIS\ plot and \PDP\ studies at higher concentration (2.0 g L?1) of PPE. Potentiodynamic polarization result shows mainly the cathodic type inhibition for PPE. Surface morphology of \AA\ is carried by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Quantum chemical study is complemented well with the experimental findings of the corrosion inhibition.
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