Electrochemical measurements for the corrosion inhibition of mild steel in 1 M hydrochloric acid by using an aromatic hydrazide derivative

被引：145
作者：
Kumari, P. Preethi [1 ]
Shetty, Prakash [2 ]
Rao, Suma A. [1 ]
机构：
[1] Manipal Univ, Manipal Inst Technol, Dept Chem, Manipal 576104, India
[2] Manipal Univ, Manipal Inst Technol, Dept Printing & Media Engn, Manipal 576104, India
来源：
ARABIAN JOURNAL OF CHEMISTRY | 2017年 / 10卷 / 05期
关键词：
Mild steel; Tafel polarization; Acid corrosion; EIS; SEM; CARBON-STEEL; TRIAZOLE DERIVATIVES; ADSORPTION PROCESSES; SCHIFF-BASES; AMINO-ACIDS; TEMPERATURE; DISSOLUTION;
D O I：
10.1016/j.arabjc.2014.09.005
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The influence of an aromatic hydrazide derivative, 2-(3,4,5-trimethoxybenzylidene) hydrazinecarbothioamide (TMBHC) as corrosion inhibitor on mild steel in 1 M hydrochloric acid was studied by Tafel polarization and electrochemical impedance spectroscopy (EIS) technique. The results showed that the inhibition efficiency (% IE) of TMBHC increased with increasing inhibitor concentrations and also with increase in temperatures. TMBHC acted as a mixed type of inhibitor and its adsorption on mild steel surface was found to follow Langmuir's adsorption isotherm. The evaluation of thermodynamic and activation parameters indicated that the adsorption of TMBHC takes place through chemisorption. The formation of protective film was further confirmed by scanning electron microscopy (SEM). (C) 2014 King Saud University. Production and hosting by Elsevier B.V.
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页码：653 / 663
页数：11
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