Azardirachta Indica Leaves Ark’s as Green Corrosion Inhibitor for Aluminum in HCl Solutions

P. S. Desai

Abstract


The purpose of this paper to find out the effect of Azardirachta indica (Neem) leaves ark’s on the corrosion of aluminum in 0.4, 0.5 and 0.6M hydrochloric acid (HCl), and elucidates the mechanism of the inhibition system. Gravimetric and galvanostatic polarization methods were used to investigate the effect of aluminum corrosion in HCl solutions. The outcome revealed that maximum inhibitor efficiency which corresponds to the lowest corrosion rate was obtained at most favorable inhibitor concentration of 1.25% with reduction in the corrosion rate observed to follow in order of increasing extract concentration. The adsorption study promote that Langmuir isotherm best described the metal surface interaction with the Azardirachta indica (Neem) leaves ark’s with the best exposure time for the Azardirachta indica (Neem) leaves ark’s to adsorb to the metal surface at all concentrations. Polarization study reveals that the inhibitors functions as a mixed inhibitor.

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DOI: https://doi.org/10.23956/ijermt.v6i6.262

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