Environmental friendly plasma electrolytic oxidation of AM60 magnesium alloy and its corrosion resistance
作者： Fa-he Cao , Long-yong Lin , Zhao Zhang , Jian-qing Zhang , Chu-nan Cao
DOI: 10.1016/S1003-6326(08)60043-6
关键词: Magnesium alloy 、 Corrosion 、 Polarization (electrochemistry) 、 Anodizing 、 Alloy 、 Salt spray test 、 Dielectric spectroscopy 、 Plasma electrolytic oxidation 、 Metallurgy 、 Materials science
摘要: Plasma electrolytic oxidation of Mg-based AM60 alloys was investigated using 50 Hz AC anodizing technique in an alkaline borate solution, which contained a new kind organic. The anodic film is relatively smooth with some micro pores and cracks, while the consists MgO, MgAl2O4 MgSiO3. electrochemical behavior studied by impedance spectroscopy potentiodynamic polarization. Polarization results indicate PEO treatment can decrease corrosion current 3−4 magnitude compared blank alloy. presents good level protection for magnesium alloy, over 272 h salt spray test based on ASTM B117. effect micro-structure composition efficiency also investigated.
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