Experimental and Theoretical Studies on Corrosion Inhibition Performance of an Expired Drug on the Corrosion of Mild Steel in the Acid Media

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Authors

  • S. Ananth Kumar
     Sri Venkateswara Arts and Science College, Department of Chemistry, Dharmapuri –636809, Tamil Nadu ,IN
  • S. Rameshkumar
     Sri Vasavi College, Department of Chemistry, Erode – 638316, Tamil Nadu ,IN
  • K. Velumani
     Sri Vasavi College, Department of Chemistry, Erode – 638316, Tamil Nadu ,IN
  • S. S. Subramanian
     PSG College of Technology, Department of Applied Sciences, Coimbatore – 641004, Tamil Nadu ,IN

DOI:

https://doi.org/10.15613/sijrs/2023/v10i1-2/44111

Keywords:

Corrosion, Electrochemical Impedance, Inhibitor, Potentiodynamic Polarisation

Abstract

Through weight loss, electrochemical impedance, and potentiodynamic polarisation techniques, the effectiveness of an expired drug in preventing the corrosion of mild steel in acidic environments was investigated. The concentration of inhibitor correlated with the corrosion inhibition efficiency, which peaked in both acid media at 100 μM. The compound is a mixed-type inhibitor of corrosion. The experimental data were connected with computed quantum chemical parameters. According to theoretical studies, the protonated form of corrosion inhibitor contributes more to the observed corrosion inhibition efficacy in acidic conditions than the neutral form.

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Published

2024-07-19

Issue

Volume 10, Issue 1-2, January-December 2023

Section

Articles

 

References

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