Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula

doi:10.1039/c7ra13045g

IMR OpenIR

	Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula
	Feng, Lijuan 1,2; Yang, Huaiyu 2; Cui, Xin 1; Chen, Di 1; Li, Guofu 1
通讯作者	Feng, Lijuan(Ljfeng@alum.imr.ac.cn) ; Yang, Huaiyu()
	2018
发表期刊	RSC ADVANCES
ISSN	2046-2069
卷号	8 期号:12 页码:6507-6518
摘要	In order to mitigate the corrosion of steel rebar in concrete, a new environmentally friendly corrosion inhibitor formula (WKI) was designed and the corrosion inhibitive effects of WKI on steel rebar were studied by gravimetric method, electrochemical impendence spectroscopy (EIS), potentiodynamic polarization and Mott-Schottky scanning in simulated concrete pore solution. Furthermore, surface analysis and quantum chemical calculations were conducted in order to illustrate the corrosion inhibitive mechanism. The results indicate that WKI exhibits excellent corrosion inhibitive activities on steel rebar in simulated concrete pore solution. By the presence of WKI, local corrosion was significantly suppressed and no pitting could be detected during the whole experimental period. The total corrosion resistance was increased from 5469 Omega cm(2) to 64 440 Omega cm(2) and the corrosion current density was reduced from 3.23 rho A cm(-2) to 0.21 mu A cm(-2) for the sample immersed in the corrosion medium for 7 d with WKI. The corrosion potential of the steel rebar electrode moved to a higher level and the charge transfer resistance increased, indicating that the anti-corrosion properties of the steel rebar were enhanced. The corrosion inhibitive mechanism of WKI can be attributed to the fact that it can promote the formation of a passive film and reduce its defect concentration via its adsorption and interaction with the metal surface, consequently inhibiting the corrosion of steel rebar caused by chloride ions.
资助者	Project of Shandong Province Higher Educational Science and Technology Program ; Distinguished Middle-Aged and Young Scientist Encourage and Reward Foundation of Shandong Province ; Doctoral Fund Project of Weifang University of Science and Technology
DOI	10.1039/c7ra13045g
收录类别	SCI
语种	英语
资助项目	Project of Shandong Province Higher Educational Science and Technology Program[J15LA62] ; Distinguished Middle-Aged and Young Scientist Encourage and Reward Foundation of Shandong Province[ZR2016HB24] ; Doctoral Fund Project of Weifang University of Science and Technology[2017BS06]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000425034000039
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/127450
专题	中国科学院金属研究所
通讯作者	Feng, Lijuan; Yang, Huaiyu
作者单位	1.Weifang Univ Sci & Technol, Shandong Peninsula Engn Res Ctr Comprehens Brine, Shouguang 262700, Weifang, Peoples R China 2.Chinese Acad Sci, Insititute Met Res, State Key Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Feng, Lijuan,Yang, Huaiyu,Cui, Xin,et al. Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula[J]. RSC ADVANCES,2018,8(12):6507-6518.
APA	Feng, Lijuan,Yang, Huaiyu,Cui, Xin,Chen, Di,&Li, Guofu.(2018).Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula.RSC ADVANCES,8(12),6507-6518.
MLA	Feng, Lijuan,et al."Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula".RSC ADVANCES 8.12(2018):6507-6518.