Electrochemical and surface analysis studies on corrosion inhibition of Q235 steel by imidazoline derivative against CO2 corrosion

被引：184
作者：
Wang, B. [1 ]
Du, M. [1 ]
Zhang, J. [1 ]
Gao, C. J. [1 ]
机构：
[1] Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 01期
关键词：
Weight loss; EIS; AFM; XPS; Acid inhibition; CARBON-DIOXIDE CORROSION; ATOMIC-FORCE MICROSCOPY; MILD-STEEL; IMPEDANCE SPECTROSCOPY; MOLECULAR-STRUCTURE; ADSORPTION BEHAVIOR; MECHANISM; FLOW; EIS; MICROSTRUCTURE;
D O I：
10.1016/j.corsci.2010.09.042
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The inhibition performance of a newly synthesized thioureido imidazoline inhibitor (TAI) in CO2 corrosion was studied by using electrochemical impedance spectroscopy (EIS) atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) Results show that the values of inhibition efficiency show peak-value-phenomenon at concentration of 0 15 mmol dm(-3) owing to the change of adsorption mode The adsorption of protonated TAI molecules on the negatively charged steel surface makes the potential of zero charge (PZC) shift to positive direction and the long-range electrostatic exclusive forces between AFM tip and sample surface are reduced by screening effect of surface charges (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码：353 / 361
页数：9
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