磷酸三乙酯与稀土铈 (IV) 离子在盐酸溶液中对Cu的缓蚀协同效应

曾慧晶, 李光勇, 吴欢, 高立新, 张大全

Synergistic Effect of Triethyl Phosphate and Cerium (IV) Ion on Corrosion Inhibition for Copper in Hydrochloric Acid Solution

ZENG Huijing, LI Guangyong, WU Huan, GAO Lixin, ZHANG Daquan

表2 Cu电极在含不同缓蚀剂的0.5 mol/L盐酸溶液中浸泡1 h后的电化学阻抗参数

Table 2 Impedance parameters for copper electrode immersed in 0.5 mol/L HCl solution containing different inhibitors for 1 h

Inhibitor Qdl Rct Qa Ra W η mmol/L Y0 / μSsncm-2 n1 Ωcm2 Y0 / μSsncm-2 n2 Ωcm2 Ss0.5cm-2 % Blank 1304 0.64 213.4 --- --- --- 23.5×10-3 --- 5.87 TEP+0.5 Ce4+ 214.2 0.91 401.2 1011 0.71 10.85 6.99×10-3 48.2 5.87 TEP+1.0 Ce4+ 235.6 0.87 638.0 955.3 0.72 29.44 4.92×10-3 68.0 5.87 TEP+2.0 Ce4+ 359.3 0.82 288.6 820.8 0.75 15.67 9.75×10-3 29.9 29.3 TEP+0.5 Ce4+ 248.1 0.87 507.0 862.9 0.73 31.58 6.42×10-3 60.4 29.4 TEP+1.0 Ce4+ 148.6 0.94 785.0 853.6 0.70 24.58 4.38×10-3 73.6 29.4 TEP+2.0 Ce4+ 146.1 0.90 535.9 814.2 0.73 32.37 4.99×10-3 62.4 58.7 TEP+0.5 Ce4+ 219.8 0.86 618.6 930.1 0.74 57.70 5.11×10-3 68.4 58.7 TEP+1.0 Ce4+ 168.0 0.87 1025.0 887.5 0.74 76.03 2.97×10-3 80.6 58.7 TEP+2.0 Ce4+ 152.2 0.86 835.6 701.5 0.73 84.99 4.87×10-3 76.8