A Study of Green Inhibitor for Acidic Corrosion of Mild Steel

Authors

  • R. Anto Maria Jesili  Department of Chemistry, St. Mary's College (Autonomous), Thoothukudi, Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamilnadu, India
  • J. Antony Rajam1  Department of Chemistry, St. Mary's College (Autonomous), Thoothukudi, Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamilnadu, India

Keywords:

Corrosion inhibitor, Mild steel, Euphorbia hirta, Polarization, 1M HCl, Electrochemical Impedence Spectroscopy.

Abstract

The inhibition efficiency of Euphorbia hirta leaves on the corrosion of mild steel in hydrochloric acid (1M) was investigated by the weight loss method. Potentiodynamic polarization and electrochemical impedence were studied to evaluate the corrosion inhibition performance of the Euphorbia hirta leaf extract. The results revealed that Euphorbia hirta acts as a corrosion inhibitor in 1M HCl. The inhibition efficiency increases with increase of extract temperature and contact time but decreases with the concentration of the leaf extract. The inhibition action was attributed to the adsorption of the chemical compounds present in the leaf extract on mild steel. The formation of an adsorbed film on a steel surface was investigated using scanning electron microscopy (SEM) and FT – IR.

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International Journal of Scientific Research in Science and Technology

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Published

2021-04-15

Issue

Volume 9, Issue 4, March-April-2021

Section

Research Articles

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How to Cite

[1]
R. Anto Maria Jesili, J. Antony Rajam1 "A Study of Green Inhibitor for Acidic Corrosion of Mild Steel" International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011,Volume 9, Issue 4, pp.163-169, March-April-2021.