Effect of ginger extract as green inhibitor on chloride-induced corrosion of carbon steel in simulated concrete pore solutions

被引：169
作者：
Liu, Yongqi [1 ]
Song, Zijian [1 ]
Wang, Wanyi [1 ]
Jiang, Linhua [1 ,2 ]
Zhang, Yingjie [3 ]
Guo, Mingzhi [1 ]
Song, Fengyan [4 ]
Xu, Na [1 ]
机构：
[1] Hohai Univ, Coll Mech & Mat, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China
[2] Natl Engn Res Ctr Water Resources Efficient Utili, Nanjing 210098, Jiangsu, Peoples R China
[3] Hohai Univ, Coll Agr Engn, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China
[4] Jiangsu Res Inst Bldg Sci, State Key Lab High Performance Civil Engn Mat, Nanjing 210008, Jiangsu, Peoples R China
来源：
JOURNAL OF CLEANER PRODUCTION | 2019年 / 214卷
基金：
中国国家自然科学基金;
关键词：
Ginger extract; Green corrosion inhibitor; Chloride-induced corrosion; Carbon steel; Simulated concrete pore solutions; MILD-STEEL; REINFORCING STEEL; ADSORPTIVE DESULFURIZATION; ACTIVATED CARBON; ACID-SOLUTION; ALLOY-STEEL; BEHAVIOR; DIBENZOTHIOPHENE; NANOPARTICLES; POLARIZATION;
D O I：
10.1016/j.jclepro.2018.12.299
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, we tried to employ the ginger extract as an environmentally friendly inhibitor to improve chloride-induced corrosion resistance of reinforcing steel in simulated concrete pore solutions. The inhibiting performances of ginger extract as well as three other inhibiting systems were studied by stereo-microscope and various electrochemical measures. The main phenolic compounds of ginger extract were confirmed by liquid chromatography-mass spectrometry. Meanwhile, the elements and chemical bonds existed in the surface passive film of the steel bar immersed in the ginger inhibiting system were characterized via attenuated total reflection Fourier transform infrared spectroscope (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS). Electrochemical results indicated that the ginger extract was an efficient corrosion inhibitor in reducing the chloride-induced corrosion and at the optimal dosage (2%) it could improve the chloride threshold values of steel electrodes from 0.02 mol/L to 0.08 mol/L. From the results of potentiodynamic polarization, ATR-FTIR and XPS, it was found that the ginger extract was a mixed type corrosion inhibitor that improved the corrosion resistant performance of carbon steel mainly by forming a carbonaceous organic film to restrain both the cathodic and the anodic corrosion reaction. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：298 / 307
页数：10
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