Evaluation of the Corrosion Inhibition Performance of Orange Leaf Extract on Aluminium in Basic Media
Abstract
In this study, gravimetric and electrochemical techniques were employed to investigate the effects of orange leaf extract (OLE) on the inhibition of aluminum corrosion in alkaline environments. The material was characterized using Fourier Transform Infrared Spectroscopy (FTIR), while surface morphology was examined using Electron Dispersive X-ray Spectroscopy (EDX) and Scanning Electron Microscopy (SEM). Additionally, Potentiodynamic Polarization (PDP), Electrochemical Impedance Spectroscopy (EIS), and Open Circuit Potential (OCP) were utilized to analyze the corrosion inhibition process. The results of the study indicate that the extract displays significant effectiveness in preventing the corrosion of aluminum under basic conditions, exhibiting inhibition efficiencies of 90% at 303 K and 84.85% at 313 K. It was observed that the inhibitory efficiency of the extract decreased with higher temperatures and longer immersion times, while it increased with higher concentrations of the extract. These findings suggest that the extract has potential as a corrosion inhibitor for aluminum in basic environments. The inhibition observed in the study can be attributed to the adherence of inhibitor molecules to the surface of the aluminum sample, as outlined by the Temkin adsorption isotherm. It was found that the functional groups O-H and N-H were primarily responsible for the inhibitory effects of the extracts. Additionally, the results of the potentiodynamic polarization (PDP) indicated that orange leaf extract (OLE) functions as a mixed-type inhibitor. SEM investigations confirmed the formation of a protective coating on the metal surface, leading to a reduced rate of corrosion. Furthermore, the hydrophobic nature of aluminum in the presence of the inhibitor was demonstrated. Overall, the findings suggest that orange leaf extract is effective as a corrosion inhibitor for aluminum in basic media.
Keywords
Evaluation, Corrosion, Inhibition Performance, Orange Leaf Extract, Aluminum, Basic Media
Citations
IRE Journals:
Ibiam Prince Amauche , Aboje Vivian Ajenu , Ileaboya Emmanuel Eromosei , Okafor Blessing Onyinye
"Evaluation of the Corrosion Inhibition Performance of Orange Leaf Extract on Aluminium in Basic Media" Iconic Research And Engineering Journals Volume 9 Issue 1 2025 Page 1258-1282
IEEE:
Ibiam Prince Amauche , Aboje Vivian Ajenu , Ileaboya Emmanuel Eromosei , Okafor Blessing Onyinye
"Evaluation of the Corrosion Inhibition Performance of Orange Leaf Extract on Aluminium in Basic Media" Iconic Research And Engineering Journals, 9(1)
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