AZ91D鎂合金於n-butyl-n-methylpyrrodine trifluoromethylsulfonate(BMP-NTf2)離子液體中的腐蝕特性

Corrosion Characteristics of Mg Alloys in nbutyl-n-methylpyrrodine trifluoromethylsulfonate (BMP-NTf2) Ionic Liquids

本研究探討AZ91鎂合金於n-butyl-n-methylpyrrodine trifluoromethylsulfonate （BMPNTf2）離子液體中的腐蝕行為，並與同材料在一般在水溶液環境中的腐蝕特性做比較。實驗中利用動電位極化以及電化學交流阻抗分析以探討鎂合金於不同環境下的電化學性質與抗蝕能力。另外，亦將鎂合金浸泡於離子液體中兩週，並分別以掃瞄式電子顯微鏡與X-ray能量散佈光譜儀分析試片的表面形貌與化學成分。實驗結果顯示，鎂合金於離子液體中比在水溶液中有明顯較佳的抗蝕性，在兩種環境下的極化阻抗值分別為160,000Ω-cm2以及500Ω-cm2。

Corrosion behavior of Mg alloys in n-butyl-n-methylpyrrodine trifluoromethylsulfonate (BMP-NTf2) ionic liquids was investigated in this study. Potentiodynamic and electrochemical impedance spectroscopic techniques were used to examine the corrosion properties of Mg alloys in ionic liquids and traditional aqueous solutions (as a counterpart). The Mg samples after being immersed in the ionic liquid were analyzed using a scanning electron microscope and an X-ray energy dispersive spectrometer. The experimental results indicated that the corrosion resistance of Mg in the ionic liquid was much better than that in traditional aqueous solutions, and the measured polarization resistances in the two environments were 160,000 and 500 Ω-cm2, respectively.