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Corrosion Inhibition Studies of Mild Steel by New Inhibitor in Different Corrosive Medium

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Author Affiliations

  • 1Dept. of PG Studies and Research in Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577451, INDIA
  • 2Dept. of Chemistry, Srinivas School of Engineering, Mukka, 575021, Mangalore, INDIA

Res.J.chem.sci., Volume 1, Issue (7), Pages 46-50, October,18 (2011)

Abstract

2 – methyl -3- (trifluromethyl) aniline was tested as a corrosion inhibitor for mild steel in 1 M HCl and 0.5 M H2SO4 separately using mass loss and electrochemical studies. The inhibition efficiencies were evaluated at different concentrations of the inhibitor. The inhibition efficiency increased with increase in inhibitor concentration. Electrochemical studies showed that the inhibitor is of mixed type with a slight predominance of anodic character. The inhibitor was more active in HCl than in H2SO4. The maximum inhibition efficiency approached at 0.20 m M in both the acid medium. The surface morphology of mild steel in the presence and absence of inhibitor was studied by using SEM images.

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