中性氯化钠溶液中咪唑啉磷酸酯对7075铝合金电偶腐蚀抑制行为研究

阮智邦, 魏仕轩, 王树鹏, 吕正平, 李格升, 李燚周

Inhibition Effect of Imidazoline Phosphate on Galvanic Corrosion of 7075 Al-alloy in Neutral NaCl Solution

RUAN Zhibang, WEI Shixuan, WANG Shupeng, LV Zhengping, LI Gesheng, LI Yizhou

表2 7075-X70耦合试样在未含和含有200 mg/L SIP的3.5%NaCl溶液中浸泡24 h后阻抗谱拟合参数

Table 2 Fitting parameters of Nyquist diagrams of 7075-X70 coupling specimen immersed for 24 h in 3.5%NaCl solutions without and with 200 mg/L SIP

Sloution Rs / Ω·cm2 Y0Qf / Ω-1·cm-2·s n Rf / Ω·cm2 Y0Qdl / Ω-1·cm-2·s n n Rct / Ω·cm2 Without SIP 7.119 2.825 × 10-5 0.89 2540 1.431 × 10-3 0.99 853.3 With SIP 6.928 2.7 × 10-5 0.91 3241 4.67 × 10-4 0.93 7485