CORROSION PERFORMANCE OF CERAMIC FILMS FABRICATED ON AZ91D MAGNESIUM ALLOY BY PLASMA ELETROLYTIC OXIDATION IN AN OPTIMIZED Na_2SiO_3 CONTAINING SOLUTION
用优化的Na_2SiO_3电解液制备的镁合金陶瓷膜的防护性能

Plasma electrolytic oxidation of AZ91D magnesium alloy was studied in an optimized solution mainly containing Na2SiO3.The microstructure,phase constituents and elemental distribution of ceramic films were investigated by using scanning electron microscopy(SEM) and X-ray diffraction(XRD).The corrosion resistance of the magnesium alloy with ceramic films were evaluated by potentiodynamic polarization curves and electrochemical impedance spectroscopy(EIS).The results indicated that Icorr of the magnesium alloy...