Synergistic inhibition effect between capsella bursa-pastoris extracts and iodide ions for Q235 mild steel in 1 M HCL solution

被引：0

作者：

Hu, Qin ^{[1
]}

Qiu, Yubing ^{[1
]}

Zhang, Guoan ^{[1
]}

Guo, Xingpeng ^{[1
,2
]}

机构：

[1] School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China

[2] Hubei Key Laboratory of Materials Chemistry and Service Failure, Wuhan, China

来源：

Open Materials Science Journal | 2014年 / 8卷 / 01期

关键词：

Isotherms - Low carbon steel - Chlorine compounds - Steel corrosion - Electrochemical corrosion;

D O I：

10.2174/1874088X01408010031

中图分类号：

学科分类号：

摘要：

The inhibition effect of Capsella bursa-pastoris extracts (CBE) and its synergistic effect with KI (CBEK) for Q235 mild steel in 1 M HCl solution were studied by electrochemical measurements. Both CBE and CBEK can serve as eco-friendly, mixed-type inhibitors, and the inhibition efficiency increases with the concentration and temperature. The synergistic parameter (SI) indicates a cooperative mechanism between the iodide anions and CBE molecules at lower temperature. The associated thermodynamic and kinetic data suggest the presence of CBEK on metal surface mainly through chemisorption at higher temperature. The adsorption processes follow Langmuir isotherm. © Hu et al.

引用

页码：31 / 38