کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5349717 1645400 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and corrosion resistance of Ce-V conversion coating on AZ31 magnesium alloy
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Microstructure and corrosion resistance of Ce-V conversion coating on AZ31 magnesium alloy
چکیده انگلیسی
A Ce-V conversion coating was developed to improve the corrosion resistance of AZ31 magnesium alloy. Scanning electronic microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectrometer (XPS), grazing incidence X-ray diffraction (GIXRD) and the ball cratering test were adopted to study the morphology, chemical composition, structure and thickness of the coating. The coating has duplex structure with network and its thickness is about 2 μm. The coating contains high contents of Ce and V, which exhibits amorphous structure. Potentiodynamic polarization shows the coating can increase the corrosion potential and reduce the corrosion current density of AZ31 magnesium alloy. Moreover, the electrochemical impedance spectra exhibit the coating significantly improves the corrosion resistance of AZ31 magnesium alloy. Results indicate that the Ce-V conversion coating can provide effective protection to AZ31 magnesium alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 341, 30 June 2015, Pages 166-174
نویسندگان
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