کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442017 | 1509430 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Electrochemical synthesis and corrosion behavior of polyaniline-benzoate coating on copper Electrochemical synthesis and corrosion behavior of polyaniline-benzoate coating on copper](/preview/png/1442017.png)
Electrochemical polymerization of polyaniline (PANI) coating on copper electrode was performed galvanostatically in the current density range between 0.50 and 1.25 mA cm−2, from aqueous solution of 0.3 mol dm−3 sodium benzoate and 0.2 mol dm−3 aniline. The corrosion behavior of PANI coated copper and copper electrode exposed to 0.5 mol dm−3 sodium chloride solution was investigated by potentiodynamic and electrochemical impedance spectroscopy techniques. It was observed that thin PANI (5 μm) coating had provided efficient protection (∼96%) to copper in 0.5 mol dm−3 sodium chloride solution. Unusual initial impedance behavior to that normally observed with conventional organic coatings was attributed to dedoping of benzoate anions from the polymer coating.
Journal: Synthetic Metals - Volume 161, Issues 13–14, July 2011, Pages 1313–1318