Protection against corrosion of primary epoxy coatings in the presence of polypryrole

Abstract

Conducting polymer electrodeposited base on Ppy and nano iron oxide have a possibility in protecting the metal against corrosion by anodic galvanic mechanism. but this is difficult to apply it in side or in a large surface of metals. In order to test in more realistic condition, powders of Ppy and composite Ppyloxide obtained by chemical synthesis have been incorporated into an epoxy to form primary coatings on the carbon steel. This paper presents some firsts results of corrosion test obtained by electrochemical impedance method.