STUDY ON CORROSION OF MAGNESIUM ALLOY IN SIMULATED COOLING WATER BY MEANS OF IN SITU SPECTROSCOPIC ELLIPSOMETRY
原位椭圆偏振光谱法研究镁合金在模拟冷却水中的腐蚀

In situ spectroscopic ellipsometry was employed to investigate the corrosion behavior of AZ40 magnesium alloy in a simulated cooling water without and with molybdate inhibitor.By deconvoluting the ellipsometric data with a one-layer model,the evolution of the refractive indices and the thickness of the interface layer of "electrode-medium" were obtained.Based on the deconvolution results,three regimes,which were dissolution of native oxide film,formation of adsorption film and precipitation of corrosion pro...