A comparative study of leaves extracts for corrosion inhibition effect on aluminium alloy in alkaline medium

被引：48
|
作者：
Chaubey, Namrata [1 ]
Yadav, Dileep Kumar [2 ]
Singh, Vinod Kumar [1 ]
Quraishi, M. A. [3 ]
机构：
[1] Udai Pratap Autonomous Coll, Dept Chem, Varanasi 221002, Uttar Pradesh, India
[2] Banaras Hindu Univ, Indian Inst Technol, Dept Ceram Engn, Varanasi 221005, Uttar Pradesh, India
[3] Banaras Hindu Univ, Indian Inst Technol, Dept Chem, Varanasi 221005, Uttar Pradesh, India
来源：
AIN SHAMS ENGINEERING JOURNAL | 2017年 / 8卷 / 04期
关键词：
Aluminium; AFM; EIS; Polarization; Alkaline corrosion; 1 M HCL; MILD-STEEL; ELECTROCHEMICAL-BEHAVIOR; MOLECULAR-STRUCTURE; ADSORPTION; SURFACE;
D O I：
10.1016/j.asej.2015.08.020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper deals with the comparative inhibition study of some plants leaves extract namely Cannabis sativa (CS), Rauwolfia serpentina (RS), Cymbopogon citratus (CC), Annona squamosa (AS) and Adhatoda vasica (AV) on the corrosion of aluminium alloy (AA) in 1 M NaOH. The corrosion tests were performance by using gravimetric, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and linear polarization resistance (LPR) techniques. RS showed maximum inhibition efficiency (eta%), 97% at 0.2 g L-1. Potentiodynamic polarization curves justified that all the inhibitors are mixed-type. Surface morphology of AA is carried by scanning electron microscopy (SEM) and atomic force microscopy (AFM). (C) 2015 Ain Shams University. Production and hosting by Elsevier B.V.
引用
收藏
页码：673 / 682
页数：10
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