关键词：纯钛, 极化曲线, 耐蚀性能, 脱硫湿烟气冷凝液, 环境因素

Abstract:Due to fine corrosion resisting property, industrial pure titanium is considered as the ideal material for thermal power plant desulfurization wet stack anticorrosion liner. Adapted corrosion electrochemistry method, the effect of environment factor to corrosion resisting property on TA2 pure titanium in simulated desulfurized wet flue gas condensate was studied. The result indicated that the corrosion resisting property of pure titanium was mainly determined by pH and HF content of the condensate. If pH is higher than 3.0 or HF content is low enough, pure titanium is in selfpassivation behavior, with high corrosion resisting property. In contrast, pure titanium is in activationpassivation behavior, corrosion resisting property is relatively poor. In addition, temperature and flow velocity of condensate increased corrosion rate. Other changes were caused by anodic passive film dissolution due to HF was accelerated. 

Keywords:pure titanium, polarization curve, corrosion resisting property, desulfurized wet flue gas condensate, environmental factor