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3 Cu在含有不同浓度LNLP硫酸溶液中的Tafel参数

Table 3 Tafel parameters of Cu in H₂SO₄ solution containing various concentration of LNLP

C mmol/L	E_corrV_SCE	I_corr μA·cm^-2	β_c mV·dec^-1	β_a mV·dec^-1	η
Blank	-0.05	11.49	-215.6	44.8	-
0.1	-0.10	0.82	-156.3	108.3	92.9%
0.2	-0.13	0.61	-163.1	141.2	94.7%
0.5	-0.13	0.45	-148.1	91.5	96.1%
1	-0.09	0.23	-141.5	69.9	98.0%