Research Information System
Corrosion Engineering Science and Technology, vol.44, no.1, pp.12-19, 2009 (SCI-Expanded)
Poly (aniline-co-o-anisidine) films were coated on Cu-40% brass electrodes using cyclic voltammetric conditions in a sodium oxalate solution with 0-06M aniline and 0-06M o-anisidine monomers at applied scan rates of 20 and 50 mV s-1. Using this procedure, the surface of the electrodes was clearly covered with a black copolymer layer of strongly adherent homogeneous characteristics. In order to evaluate the corrosion performance of copolymer coated (CuZn/PANIco-POA) and uncoated electrodes in 3?5%NaCl, AC electrochemical impedance spectroscopy, anodic polarisation plots and open circuit potential-time curves were used. The copolymer films exhibited significant protection efficiency against the attack of corrosive agents and reduced drastically the corrosion rate of the brass. © 2009 Institute of Materials, Minerals and Mining.