In this paper, we study the corrosion of the Ti-6Al-4V alloy prepared by electron beam printing (EBM) and laser melt printing (SLM) technology by runway de-icing chemicals (potassium acetate solution). Casted Ti-6Al-4V cooperation for comparison, the corrosion resistances of the three alloys were analyzed by electrochemical impedance spectroscopy and polarization curves. The results show that the conventional casted Ti-6Al-4V alloy has higher surface resistance value, higher polarization resistance and lower blunt current density, indicating that the passivation film is easier to form and the corrosion resistance is stronger. The resistance values, polarization resistances and blunt current densities of SLM- and EBM-Ti-6Al-4V alloys are not much different, and the corrosion resistances are similar.
