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4 Cu电极在加有TEP和Ce4+复配缓蚀剂的0.5 mol/L盐酸溶液中浸泡1 h后的极化曲线电化学参数

Table 4 Electrochemical polarization parameters for copper electrode immersed for 1 h in 0.5 mol/L HCl solutions containing 1.0 mmol/L Ce4+ and various concentrations of TEP

Inhibitor / mmolL-1 icorr / μAcm-2 Ecorr / mV Ba / mVdec-1 Bc / mVdec-1 η / % Blank 8.5750 -230.88 52.66 252.78 --- 5.87 TEP+1.0 Ce4+ 3.0391 -244.16 57.61 155.28 64.6 29.35 TEP+1.0 Ce4+ 2.9374 -246.45 59.37 158.64 65.7 58.7 TEP+1.0 Ce4+ 2.7046 -256.94 67.90 162.36 68.5