不同离子对TC4钛合金电化学腐蚀行为的协同作用机制

赵平平, 宋影伟, 董凯辉, 韩恩厚

Synergistic Effect Mechanism of Different Ions on the Electrochemical Corrosion Behavior of TC4 Titanium Alloy

ZHAO Pingping, SONG Yingwei, DONG Kaihui, HAN En-Hou

表2 TC4钛合金在含不同浓度F-的3.5%NaCl中极化曲线的拟合结果

Table 2 Fitting results of polarization curves of TC4 alloy in 3.5%NaCl solutions with different cF

cF Ecorr icorr bc ipp mmol·L-1 mV μA·cm-2 mV·decade-1 μA·cm-2 0 -502 0.06 -223 4.48 3 -500 0.09 -207 7.65 4 -558 0.12 -166 9.72 6 -648 0.19 -175 14.52 8 -734 0.10 -169 20.97 12 -627 0.20 -268 20.97 25 -744 0.13 -168 63.46