The effect of two oleo-gum resin exudate from Ferula assa-foetida and Dorema ammoniacum on mild steel corrosion in acidic media

被引：104
作者：
Behpour, M. [1 ]
Ghoreishi, S. M. [1 ]
Khayatkashani, M. [1 ]
Soltani, N. [2 ]
机构：
[1] Univ Kashan, Fac Chem, Dept Analyt Chem, Kashan 8731751167, Iran
[2] PNU, Dept Chem, Tehran 193954697, Iran
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 08期
关键词：
Mild steel; Acid solutions; Polarization; EIS; Acid inhibition; M HYDROCHLORIC-ACID; COLD-ROLLED STEEL; RAPHIA-HOOKERI; PLANT-EXTRACT; SULFURIC-ACID; INHIBITION; DERIVATIVES; ADSORPTION; HCL; ALUMINUM;
D O I：
10.1016/j.corsci.2011.04.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A comparative study of two oleo-gum resins exudate from Ferula assa-foetida (F. assa-foetida) and Dorema ammoniacum (D. ammoniacum), as inhibitors for mild steel corrosion in 2 M HCl solution was investigated by weight loss measurements, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. Potentiodynamic polarization curves indicated that both oleo-gums behave as mixed type inhibitors. The effect of temperature on the inhibition efficiency was studied. At all temperatures, the experimental data fit Langmuir isotherm for both oleo-gum resin exudates. Quantum chemical calculations were performed to illustrate the adsorption process of some specific components of two oleo-gum resin exudates. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2489 / 2501
页数：13
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