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4 TC4钛合金在含不同浓度Fe3+的酸性含氟溶液3.5%NaCl + 50 mmol/L H+ + 3 mmol/L F-中极化曲线的拟合结果

Table 4 Fitting results of polarization curves of TC4 alloy in 3.5%NaCl + 50 mmol/L H+ + 3 mmol/L F- solutions with different cFe

cFe Ecorr icorr bc ipp mmol·L-1 mV μA·cm-2 mV·decade-1 μA·cm-2 0 -892 64.00 -113 89.2 1 -892 64.00 -113 72.4 2 -450 9.57 -121 43.1 3 -84 8.68 -179 30.0 4 -43 7.83 -179 23.6 5 11 2.64 -206 18.2