Evaluation of Metal Corrosion Inhibition by Artocarpus Altilis Extract

Author(s): Suhasini S, Vaikundamani M and Dr. K Anbarasi

Abstract:

Green corrosion inhibitors derived from plants have gained importance as they are inexpensive, eco-friendly, and rich in naturally occurring phytochemicals. In the present work, the corrosion inhibition efficiency of Artocarpus altilis leaf extract (AAL) on mild steel (MS) in 1N H₂SO₄ medium was investigated. The study employed weight loss method to evaluate inhibition efficiency, Fourier Transform Infrared (FTIR) spectroscopy to identify functional groups responsible for adsorption, and Scanning Electron Microscopy (SEM) to examine the surface morphology of MS specimens. Weight loss measurements demonstrated that AAL extract significantly reduces corrosion rate, showing higher efficiency with increasing concentration. FTIR results indicated the presence of functional groups such as hydroxyl and carbonyl, which may interact with the metal surface, leading to the formation of a protective layer. SEM analysis further confirmed surface smoothening and reduction of corrosion damage in the presence of the extract. Thus, Artocarpus altilis leaf extract can be considered as an effective, renewable, and environmentally sustainable green corrosion inhibitor for mild steel in acidic media.

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