Corrosion Protection of Stainless Steel by Polyaniline/Polypyrrole Composite Coating

Department of Technology, Annamalai University, nagar -608 002, Annamalai
International Journal of Engineering Science and Technology 01/2010; 2:7105-7111.


Electrochemical deposition of polyaniline/polypyrrole coatings on stainless steel was carried out by the constant potential technique. The surface properties and corrosion behavior of the coatings were studied by varying the time of deposition and the initial monomer concentration. The corrosion current and corrosion potential were measured by direct current polarization test. The changes in corrosion current and corrosion potential with the deposition time and the initial monomer concentration were thoroughly investigated. The surface energy of coated stainless steel was calculated by using dynamic contact angle analyzer.

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Available from: Rm Meyyappan, Jul 02, 2015