Anticorrosion Performance of Mitracarpus hirtus Extract on Mild Steel in 1 M HCl

  • R. Ragul
  • S. Kathiravan
  • A. Murugesh
  • J. RavichandranEmail author


The methanol extract of Mitracarpus hirtus leaves (MMH) as a corrosion inhibitor for mild steel (MS) in 1 M HCl was probed by weight loss, colorimetric, and electrochemical methods, varying the concentrations of the inhibitor, acid, added halide ions, and temperature. The maximum efficiency of 89.06% was obtained at an inhibitor concentration of 0.6 g/L. The results suggest that the percentage of inhibition efficiency increases with an increase in MMH concentration and decreases with temperature. Thermodynamic parameters indicate the spontaneous adsorption of MMH on MS surface. It has been confirmed by Langmuir adsorption process. The chemical constituents for MMH adsorption on MS surface were confirmed by Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and energy dispersive X-ray spectrometer.


Mild steel Weight loss Colorimetric Electrochemical FT-IR FESEM-EDS 


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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • R. Ragul
    • 1
  • S. Kathiravan
    • 1
  • A. Murugesh
    • 1
  • J. Ravichandran
    • 1
    Email author
  1. 1.Postgraduate and Research Department of ChemistrySri Ramakrishna Mission Vidyalaya College of Arts and ScienceCoimbatoreIndia

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