一种环保型缓蚀剂利拉利汀对紫铜在硫酸中的缓蚀机理研究

董红梅, 李宝毅, 冉博元, 王琦, 牛宇岚, 丁莉峰, 强玉杰

Corrosion Inhibition Mechanism of the Eco-friendly Corrosion Inhibitor Linagliptin on Copper in Sulfuric Acid

DONG Hongmei, LI Baoyi, RAN Boyuan, WANG Qi, NIU Yulan, DING Lifeng, QIANG Yujie

表1 Cu在含有不同浓度LNLP硫酸溶液中的EIS参数

Table 1 EIS parameters of Cu in H2SO4 solution containing various concentration of LNLP

C / mmol·L-1 Rc / kΩ·cm2 Rct / kΩ·cm2 Qf / μF·cm-2 n1 Qdl / μF·cm-2 n2 W / 10-2 Ω·cm2·s1/2 η Blank 0.004 0.056 18.4 1 225.8 0.69 0.45 - 0.1 2.03 24.2 5.6 1 41.2 0.70 - 99.77% 0.2 12.3 70.2 2.1 1 10.5 0.72 - 99.93% 0.5 18.5 90.1 1.8 1 8.6 0.69 - 99.94% 1 19.3 103.2 1.5 1 6.7 0.72 - 99.95%