Investigation of Corrosion Inhibition Effect and Adsorption Activities of Achyranthes aspera Extract for Mild Steel in 0.5 M H2SO4

被引：38

作者：

Saxena A. ^{[1
]}

Prasad D. ^{[1
]}

Haldhar R. ^{[1
]}

机构：

[1] Department of Chemistry, Lovely Professional University, Phagwara, 144411, Punjab

来源：

Journal of Failure Analysis and Prevention | 2018年 / 18卷 / 4期

关键词：

Achyranthes aspera; AFM; Electrochemical impedance spectroscopy; Green corrosion inhibitor; Mild steel; Polarization measurements; Quantum chemical calculations; SEM;

D O I：

10.1007/s11668-018-0491-8

中图分类号：

学科分类号：

摘要：

The corrosion inhibition effect of Achyranthes aspera extract has been examined on mild steel corrosion in 0.5 M H2SO4 by using weight loss measurements, potentiodynamic polarization measurements and electrochemical impedance spectroscopy techniques. The presence of this oleanolic acid containing extract decreases the corrosion rate of mild steel in acidic solution. The best inhibition effect of Achyranthes aspera extract for mild steel in 0.5 M H2SO4 was obtained at 500 mg L−1 using electrochemical and weight loss measurements. The adsorption of Achyranthes aspera extract on the surface of mild steel has been investigated by using AFM study, SEM study and absorption spectroscopic techniques. Due to the existence of heteroatoms in the main components, Achyranthes aspera extract is considered to be a good inhibitor. © 2018, ASM International.

引用

页码：957 / 968

页数：11

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