Empirical Analysis and Mitigation Response of Synthesised Musa Paradisiaca Compounds Inhibitory Extract on AA6063

Abstract:

This research assesses the anticorrosive activity of Musa Paradisiaca (plantain peel extract) on AA6063 aluminum alloy when immersed in a 1M HCl solution. The plantain extract was tested in concentrations of 0.2g, 0.4g, 0.6g, and 0.8g and is considered a natural green corrosion inhibitor. The corrosion studies on AA6063 were carried out by the techniques of potentiodynamic polarization, optical microscopy, SEM/EDS, and XRD analysis. Also, tests were done in the range of 30°C to investigate the inhibition efficiency. It was observed from results that the plantain extract acts as a mixed-type inhibitor and it helps in reducing the corrosion rate by depositing a protective coating on the surface of the alloy. It was found from the Tafel plots that as the concentration of extract was increased, there was a decrease in corrosion current density (j_corr) and an increase in Polarisation Resistance (Rp). The adsorption mechanism agreed with the Langmuir isotherm suggesting that only monolayer adsorption took place. Analysis of the protective film by SEM/EDS and XRD revealed the presence of Fe₂O₃, CaO, Mg, SiO₂, and Zn components. Maximum inhibition efficiency of 82% was recorded at the extract concentration of 0.8g. The study highlights the potential of plantain extract to serve as a viable green inhibitor for aluminium in acidic medium.

• Periodical: Solid State Phenomena (Volume 371)
• Pages: 81-96
• DOI: https://doi.org/10.4028/p-trX0Oa
• Online since: May 2025
• Authors: Ojo Sunday Isaac Fayomi*
• Keywords: Corrosion Inhibition, Electrochemical Analysis, Plantain Extract, Polarisation Resistance

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