Electrochemical impedance spectroscopy study of copper corrosion inhibition by PASP in 3% citric acid

被引：2

作者：

He, Rui ^{[1
,2
]}

Gao, Yuhua ^{[1
,2
]}

Yan, Meifang ^{[1
,2
,3
]}

Zhang, Lihui ^{[1
,2
]}

Liu, Zhenfa ^{[1
,2
]}

机构：

[1] Hebei Acad Sci, Inst Energy Resources, Shijiazhuang, Hebei, Peoples R China

[2] Hebei Engineer Res Ctr Water Saving Ind, Shijiazhuang, Hebei, Peoples R China

[3] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing, Peoples R China

来源：

DESALINATION AND WATER TREATMENT | 2020年 / 175卷

基金：

中国国家自然科学基金;

关键词：

Copper; Polyaspartic acid (PASP); Citric acid; Corrosion inhibition; Electrochemical impedance spectroscopy (EIS); SULFURIC-ACID; MILD-STEEL; PERFORMANCE; DISSOLUTION;

D O I：

10.5004/dwt.2020.24755

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The inhibitry action of polyaspartic acid (PASP) on copper in 3% citric acid was studied at a temperature range of 20 degrees C-50 degrees C using electrochemical impedance spectroscopy (EIS). The results revealed a good inhibitor efficiency of PASP within this concentration range. The inhibitor efficiency (eta) reached 91.5% with the PASP concentration of 1 g/L. Data obtained from EIS were analyzed to model the corrosion inhibition process through an equivalent circuit. The adsorption of PASP on the surface of copper was found to be consistent with the Langmuir adsorption isotherm.

引用

页码：189 / 195

页数：7

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