Effect of chemical composition of electrolyte on corrosion resistance of PEO coating on AZ31 magnesium alloy
سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 466
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شناسه ملی سند علمی:
IMES14_210
تاریخ نمایه سازی: 1 دی 1399
چکیده مقاله:
Plasma electrolytic oxidation was employed to form a ceramic-based coating on magnesium AZ31 alloy. The electrolytes used for the PEO processes were silicate-based electrolytes with different concentrations of phosphate. The morphologies and cross-sections of the coatings were examined with scanning electron microscopy (SEM), and the defects of the coatings and their thicknesses were measured by Image J software. The corrosion resistance of the coatings was evaluated by electrochemical impedance spectroscopy (EIS) in 3.5% NaCl solution. The results showed corrosion resistance of the coating with 6 g/L three sodium phosphate was the best.
کلیدواژه ها:
نویسندگان
Rasoul parichehr
MSc student, School of Metallurgy and Materials Engineering, University of Tehran
Aida nikbakht
MSc student, School of Metallurgy and Materials Engineering, University of Tehran
Changiz dehghanian
Professor, School of Metallurgy and Materials Engineering, University of Tehran