کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5359188 1503661 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Corrosion resistance enhancement of Ni-P-nano SiO2 composite coatings on aluminum
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Corrosion resistance enhancement of Ni-P-nano SiO2 composite coatings on aluminum
چکیده انگلیسی
The deposition rate of coating was influenced by incorporation of SiO2 particles. The microstructure was investigated with field emission scanning electron microscopy (FESEM). The amount of SiO2 was examined by Energy Dispersive Analysis of X-Ray (EDX) and amount of SiO2 nanoparticles co-deposited reached a maximum value at 4.5 %wt. Corrosion behavior of coated aluminum was evaluated by electrochemical impedance spectroscopy (EIS) and polarization techniques. The results illustrated that the corrosion rate decreases (6.5-0.6 μA/cm2) and the corrosion potential increases (−0.64 to −0.3) with increasing the quantity of the SiO2 nanoparticles in the bath. Moreover, Ni-p-SiO2 nano-composite coating possesses less porosity than that in Ni-P coating, resulting in improving corrosion resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 303, 1 June 2014, Pages 125-130
نویسندگان
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