کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
9566883 1503716 2005 10 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
The corrosion performance of polyaniline on nickel plated mild steel
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موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
The corrosion performance of polyaniline on nickel plated mild steel
چکیده انگلیسی
Electrochemical synthesis of polyaniline (PANI) was achieved on Ni plated (1 μm) mild steel (MS/Ni) and unplated mild steel (MS). The synthesis was carried out under cyclic voltammetric conditions from 0.1 M aniline containing oxalic acid solution. AC impedance spectroscopy (EIS) and anodic polarization curves were used to evaluate the corrosion performance of PANI coated and uncoated electrodes in 3.5% NaCl. It was observed that Ni plating reduced drastically the corrosion rate of mild steel and exhibited an efficient barrier property on MS. However, the porosity of nickel plating increased for longer periods. It was found that polymer film decreased the porosity of Ni coating by catalyzing the passivation of this layer with time and that PANI top coat could provide significant protection efficiency to MS/Ni electrode. While PANI coated mild steel (MS/PANI) showed a protection property against the attack of corrosive products. Its lifetime was limited for extended periods. It was found out that corrosion resistance of Ni plating with PANI top coat (MS/Ni/PANI) was higher for much longer periods with respect to the one observed for mild steel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 242, Issues 1–2, 31 March 2005, Pages 97-106
نویسندگان
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