PASSIVATION OF LOW CARBON STEEL DUE TO CONDUCTING POLYANILINE BASED PAINT

Sunil P. Jagtap

Abstract: Conducting polyaniline powder was synthesized chemically and paints containing conducting polyaniline powder were applied on low carbon steel samples. Corrosion protection performance of the coating in 3.5 % sodium chloride solution up to 48 hours and 120 hours was evaluated by using electrochemical impedance spectroscopy. It has been found that the open circuit potentials of painted steel, after the initial decrease, have been shifted to noble direction. In addition, charge transfer values have been observed to increase due to passivation of steel by PANI-HCl pigment indicating anti corrosive nature of paint

Keywords: Conducting Polyaniline Based Paint; Low Carbon Steel; Corrosion Protection; Impedance Spectroscopy.

DOI: https://doi.org/10.15623/ijret.2016.0511017