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Gravimetric and electrochemical evaluation of environmentally friendly nonionic corrosion inhibitors for carbon steel in 1 M HCl
被引:190
作者:
Negm, Nabel A.
[1
]
Kandile, Nadia G.
[2
]
Badr, Emad A.
[1
]
Mohammed, A. Mohammed
[3
]
机构:
[1] Egyptian Petr Res Inst, Petrochem Dept, Surface Act Agent Lab, Nasr City, Egypt
[2] Ain Shams Univ, Fac Women, Cairo, Egypt
[3] El Nasr Co Intermediate Chem, Cairo, Egypt
来源:
关键词:
Acid solutions;
Steel;
Polarization;
Weight loss;
Acid inhibition;
COLD-ROLLED STEEL;
QUATERNARY AMMONIUM-SALTS;
HYDROCHLORIC-ACID SOLUTION;
MILD-STEEL;
TRIAZOLE DERIVATIVES;
ADSORPTION PROCESSES;
ORGANIC-MOLECULES;
SURFACTANTS;
IRON;
ALUMINUM;
D O I:
10.1016/j.corsci.2012.08.002
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Four environmentally friendly corrosion inhibitors were derived from vanillin and were evaluated gravimetrically and electrochemically as corrosion inhibitors for carbon steel in 1 M HCl. The inhibition efficiencies of these inhibitors were depending on their concentration and the chemical structures. The adsorption of these inhibitors was found to obey Langmuir adsorption model. Polarization measurements showed the mixed type behavior of these inhibitors, which inhibits the cathodic and anodic parts of the corrosion reaction in 1 M HCl. (C) 2012 Elsevier Ltd. All rights reserved.
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页码:94 / 103
页数:10
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