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Vol. 36 No. 10 (2024): Vol 36 Issue 10, 2024

Copyright (c) 2024 Syed Abuthahir S S Syed, S. Arun Prabhu, M Syed Ali Padusha

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Corrosion Inhibition Potential of Aqueous Extract of Bauhinia acuminata Linn Leaves on Carbon Steel in Hydrochloric Acid Medium

https://doi.org/10.14233/ajchem.2024.32176
S. Arun Prabhu
PG and Research Department of Chemistry, National College (Autonomous) (Affiliated to Bharathidasan University), Tiruchirappalli-620001, India
https://orcid.org/0000-0002-8124-9267
M. Syed Ali Padusha
PG and Research Department of Chemistry, Jamal Mohamed College (Autonomous) (Affiliated to Bharathidasan University), Tiruchirappalli, India
https://orcid.org/0000-0001-8488-4103
S.S. Syed Abuthahir
PG and Research Department of Chemistry, Jamal Mohamed College (Autonomous) (Affiliated to Bharathidasan University), Tiruchirappalli, India
https://orcid.org/0000-0002-7872-0943

Corresponding Author(s) : S.S. Syed Abuthahir

syedchemjmc@gmail.com

Asian Journal of Chemistry, Vol. 36 No. 10 (2024): Vol 36 Issue 10, 2024

Abstract

The corrosion of carbon steel in 1 N HCl was analyzed using an aqueous Bauhinia acuminata Linn (BaL) leaf extract. Weight loss method was used to determine the inhibitor efficaciousness and corrosion rate. When dissolved in water, a linneus plant leaf extract exhibit an inhibitory effect which is proportionate to the amount of inhibitors present. It is possible to speed up the corrosion process by increasing the inhibitors’ concentration. Studies have shown that the BaL leaves extract has a 97.30% inhibitory efficiency. By increasing the concentration of inhibitor solutions, a surface layer forms on carbon steel, which inhibits the activity of the active site. The potentiodynamic polarization (PDP) and AC impedance studies (EIS) were employed to examine the mechanical properties of corrosion inhibition. The surface homogeneity and irregularity of carbon steel were examined using AFM and SEM under polished, corroded and inhibitor-treated surfaces. The surface irregularity of the carbon steel were analyzed using atomic force microscopy.

Keywords

Acidic solutions Corrosion Bauhinia acuminata Linn Carbon steel Mass loss method
Prabhu, S. A., Padusha, M. S. A., & Abuthahir, S. S. (2024). Corrosion Inhibition Potential of Aqueous Extract of Bauhinia acuminata Linn Leaves on Carbon Steel in Hydrochloric Acid Medium. Asian Journal of Chemistry, 36(10), 2275–2282. https://doi.org/10.14233/ajchem.2024.32176
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