Acalypha torta Leaf Extract as Green Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Solution

被引：206
作者：
Krishnegowda, Pavithra M. [1 ]
Venkatesha, Venkatarangaiah T. [1 ]
Krishnegowda, Punith Kumar M. [1 ]
Shivayogiraju, Shylesha B. [1 ]
机构：
[1] Kuvempu Univ, Dept Chem, Sch Chem Sci, Shankaraghatta 577451, Karnataka, India
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2013年 / 52卷 / 02期
关键词：
COLD-ROLLED STEEL; PLANT-EXTRACT; CARBON-STEEL; DERIVATIVES; H2SO4; MEDIA; CONSTITUENTS; ADSORPTION; LEAVES;
D O I：
10.1021/ie3018862
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The inhibitive action of ethanol extract of Acalypha torta leaves (EAL) on corrosion of mild steel in 1 M HCl solution was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy, chronoamperometric measurements, and scanning electron microscopic observations. The adsorption of EAL on mild steel follows a Langmuir adsorption isotherm, and the activation parameters governing the adsorption process were calculated and discussed. Polarization measurements reveal that the EAL acts as a mixed-type inhibitor. The inhibition efficiencies obtained from weight loss measurements and electrochemical tests were in good agreement.
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收藏
页码：722 / 728
页数：7
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