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3 TC4钛合金在含不同浓度F-的酸性3.5%NaCl + 50 mmol/L H+中极化曲线的拟合结果

Table 3 Fitting results of polarization curves of TC4 alloy in 3.5%NaCl + 50 mmol/L H+ solutions with different cF

cF Ecorr icorr bc ipp mmol·L-1 mV μA·cm-2 mV·decade-1 μA·cm-2 0 -469 3.14 -159 4.48 3 -892 64.00 -113 89.20 4 -908 78.27 -94 113.50 6 -916 130.43 -104 113.50 8 -955 189.57 -90 239.90