Electrochemical surface modification technique to impede mild steel corrosion using perfluorooctanoic acid

  • Shubha H Natarj Kuvempu University
  • Venkatesha T Venkatarangaiah Kuvempu university
  • Anantha N Subba Rao Department of Studies in Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta-577451, Karnataka
Keywords: Self-assembled monolayer, mild steel, Contact angle, IRRAS, Corrosion, electrochemical coating.

Abstract

The present work demonstrated that corrosion inhibition efficiency of electrochemically generated organic coat is remarkably effective than self-assembled monolayer (SAM) generated by dip coating technique. Perfluorooctanoic Acid (PFOA) is used to modify mild steel surface for effective protection. Infrared reflection absorption spectroscopy and contact angle measurements substantiate the modification of mild steel surface and its effect on surface hydrophobicity. A comparison between electrochemical properties of PFOA SAM generated by dip coat method (DC-PFOA) and PFOA coat generated by electrochemical method (EC-PFOA) is presented. Electrochemical measurements reveal that the corrosion protection efficiency of EC-PFOA (91%) is much superior to DC-PFOA (28%).

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Published
16-02-2016
Section
Electrochemical Science