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1 7075-T651铝合金在未含和含有200 mg/L SIP的3.5%NaCl溶液中浸泡24 h后阻抗谱拟合参数

Table 1 Fitting parameters of Nyquist diagrams of 7075 Al-alloy immersed for 24 h in 3.5%NaCl solutions without and with 200 mg/L SIP

Sloution Rs / Ω·cm2 Y0Qdl / Ω-1·cm-2·s n n Rct / Ω·cm2 Rl / Ω·cm2 L Without SIP 8.324 6.16 × 10-5 0.85 1351 618.1 2131 With SIP 8.996 3.62 × 10-5 0.86 3395 9777 7837