Original scientific paper
https://doi.org/10.5599/jese.211
Electrochemical surface modification technique to impede mild steel corrosion using perfluorooctanoic acid
Shubha H. Nataraj
; Department of Studies in Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta-577451, Karnataka, India
Venkatesha T. Venkatarangaiah
; Department of Studies in Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta-577451, Karnataka, India
Anantha N. Subba Rao
; Department of Studies in Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta-577451, Karnataka, India
Abstract
The present work demonstrated that corrosion inhibition efficiency of electrochemically generated organic coat is remarkably more 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 %).
Keywords
Self-assembled monolayer; Mild steel; Contact angle; IRRAS; Corrosion; Electrochemical coating
Hrčak ID:
153191
URI
Publication date:
31.12.2015.
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