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Electrochemical and surface analysis studies of 2-(quinolin-2-yl)quinazoiin-4(3H)-one as corrosion inhibitor for Q235 steel in hydrochloric acid
被引:112
作者:
Zhang, Weiwei
[1
]
Ma, Rui
[1
]
Liu, Huanhuan
[1
]
Liu, Yu
[1
]
Li, Shuai
[1
]
Niu, Lin
[1
]
机构:
[1] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Q235;
steel;
Corrosion inhibition;
Polarization curves;
EIS;
SEM/EDX;
FTIR;
XPS;
MILD-STEEL;
CARBON-STEEL;
QUINOLINE DERIVATIVES;
ADSORPTION;
BASE;
XPS;
IMIDAZOLINE;
PERFORMANCE;
REACTIVITY;
COPPER;
D O I:
10.1016/j.molliq.2016.07.119
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The inhibition effect of 2-(quinolin-2-yl)quinazolin-4(3H)-one on the corrosion of Q235 steel in 1 mol/L HCl solution was investigated by means of potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) methods. The experimental results reveal the 2-(quinolin-2-yl)quinazolin-4(3H)-one has a good inhibiting effect on corrosion of Q235 steel in 1 mol/L HCl solution. Polarization studies show that the 2-(quinolin-2-yl)quinazolin-4(3H)-one is a mixed type inhibitor. The adsorption of the inhibitor on steel surface obeys Langmuir adsorption isotherm and contains both physisorption and chemisorption. On the basis of surface analysis and characterization, the formation and characteristic of an adsorption-related protective inhibitor film on the steel surface have been verified. Finally, the mechanisms of corrosion and protection of the Q235 steel by the quinoline derivative inhibitor have been proposed. (C) 2016 Elsevier B.V. All rights reserved.
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页码:671 / 679
页数:9
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