Ascorbic acid as corrosion inhibitor for Q235 mild steel in acidic environments

被引：63
|
作者：
Chidiebere, Maduabuchi A. [1 ,2 ]
Oguzie, Emeka E. [2 ]
Liu, Li [1 ]
Li, Ying [1 ]
Wang, Fuhui [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
[2] Fed Univ Technol, Dept Chem, Electrochem & Mat Sci Res Lab, Pmb 1526, Owerri, Nigeria
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 26卷
关键词：
Mild steel; Corrosion; Inhibition; Adsorption; Impedance; Polarization; DENSITY-FUNCTIONAL THEORY; SULFURIC-ACID; ADSORPTION BEHAVIOR; CARBON-STEEL; DERIVATIVES; PERFORMANCE; EXTRACT; SURFACE; DFT; POLARIZATION;
D O I：
10.1016/j.jiec.2014.11.029
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The inhibition effect of ascorbic acid (AA) on mild steel corrosion in 1 M HCl and 0.5 M H2SO4 was estimated using electrochemical and surface probe techniques. Potentiodynamic polarization results showed AA to be a mixed type inhibitor in both acidic environments, whereas the impedance results revealed adsorption of the AA species on the steel surface. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) studies revealed the formation of a protective film adsorbed AA on the steel surface. Quantum chemical calculations were used to confirm the ability of AA to adsorb on a steel surface. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：182 / 192
页数：11
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