Adsorption of IFKhAN-92 corrosion inhibitor on low-carbon steel from hydrochloric-acid solution

被引：15
|
作者：
Avdeev, Ya. G. [1 ]
Luchkin, A. Yu. [2 ]
Kuznetsov, Yu. I. [1 ]
机构：
[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia
[2] Moscow State Pedag Univ, Moscow 119991, Russia
来源：
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2013年 / 49卷 / 07期
关键词：
steel; acidic corrosion; acidic corrosion inhibitors; adsorption; triazoles;
D O I：
10.1134/S2070205113070046
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Adsorption of IFKhAN-92 inhibitor on low-carbon steel from 2.0 M HCl solution was studied with the use of impedance spectroscopy. The adsorption is found to be described by the Temkin isotherm with relatively high free adsorption energy Delta G (ads) = 42 kJ/mol. The inhibitor is proposed to be chemisorbed on the surface. This hypothesis is supported by the satisfactory approximation of the adsorption kinetics by the Roginsky-Zeldovich equation and the strong protective aftereffect of the inhibitor adsorbed on the steel.
引用
收藏
页码：865 / 868
页数：4
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