02310nas a2200253   4500008004100000022001400041245009400055210006900149260007300218300001200291490000600303520137100309653001001680653002401690653003301714653002301747653004301770653003501813653002201848100002401870700002001894700001801914856012401932       2009                        eng d  a1567-173900aPoly(o-anisidine) coatings on brass: synthesis, characterization and corrosion protection0 aPolyoanisidine coatings on brass synthesis characterization and   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN  a206-2180 v93 a<p>Poly(o-anisidine) (POA) coatings were synthesized on brass by electrochemical polymerization of o-anisidine in aqueous salicylate solution by using cyclic voltammetry. These coatings were characterized by cyclic voltammetry, UV-visible absorption spectroscopy., Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The corrosion protection aspects of POA coatings on brass in aqueous 3% NaCl solution were investigated by potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The potentiodynamic polarization measurements show that the POA coating has ability to protect the brass against corrosion. The corrosion potential was about 0.204 V versus SCE more positive for the POA coated brass than that of uncoated brass and reduces the corrosion rate of brass almost by a factor of 800. The corrosion behavior of the POA coatings was also investigated by EIS through immersion tests performed In aqueous 3% NaCl solution. The evolution of the impedance parameters with the immersion time was studied and the results Show that the POA acts as a protective coating on brass against corrosion in 3% NaCl solution. The water uptake and delamination area were also determined to further support the corrosion protection performance of the POA coating. (C) 2008 Elsevier B.V. All rights reserved.</p>10abrass10aconducting polymers10aCorrosion resistant coatings10acyclic voltammetry10aElectrochemical impedance spectroscopy10aElectrochemical polymerization10apoly(o-anisidine)1 aChaudhari, Sudeshna1 aGaikwad, A., B.1 aPatil, P., P.  uhttps://library.ncl.res.in/content/polyo-anisidine-coatings-brass-synthesis-characterization-and-corrosion-protection-0