Corrosion behavior of PANI coated aluminum in oxalic acid containing different anions
نویسندگان
چکیده
Cyclic voltammetric studies were carried out on the deposition of polyaniline on pure aluminum from oxalic acid solution with and without different anions (CO3, SO3, SO4, DBS) and contribution of these anions to lyaniline film formation was investigated. Corrosion behavior of polyaniline coated aluminum in oxalic acid solution with and without different anions (CO3, SO3, SO4, DBS) has been investigated in 0.1 M HCl solution by polarization method. Semi logarithmic current-potential curves were obtained from which corrosion current density (icorr), corrosion potential (Ecorr), polarization resistance (Rp) and Tafel constants were determined. Polyaniline coating which was obtained in dodecylbenzenesulfonate (DBS) containing oxalic acid was more effective than coatings obtained from other aninos in decreasing the corrosion rate.
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