Synergistic protective effect of carboxymethyl chitosan and cathodic protection of X70 pipeline steel in seawater

doi:10.1039/c6ra25310e

	Synergistic protective effect of carboxymethyl chitosan and cathodic protection of X70 pipeline steel in seawater
	Feng, Panpan1,2 ; Wan, Kai1 ; Cai, Guowei1 ; Yang, Lihui1 ; Li, Yantao 1
	2017
发表期刊	RSC ADVANCES
卷号	7 期号:6 页码:3419-3427
文章类型	Article
摘要	This study has investigated corrosion inhibition performance on X70 pipeline steel in seawater using carboxymethyl chitosan (CMCS) and Na2WO4 at a cathodic protection potential of -0.85 V (vs. SCE). The corrosion behaviors were studied using electrochemical methods, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The results show that the inhibition efficiency increases when the CMCS concentration increases. Polarization curves reveal that CMCS and Na2WO4 exhibit a nice synergy for the corrosion inhibition of X70 pipeline steel in seawater. The inhibition mechanism behind the synergistic protective effect of CMCS and Na2WO4 is assumed to occur via both chemisorption on the steel surface through the active sites in the molecule and physisorption. When combined with cathodic protection, corrosion can be inhibited and calcareous deposits cannot form on the surface.
DOI	10.1039/c6ra25310e
收录类别	SCI
语种	英语
WOS记录号	WOS:000393749200046
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/136314
专题	海洋环境腐蚀与生物污损重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Feng, Panpan,Wan, Kai,Cai, Guowei,et al. Synergistic protective effect of carboxymethyl chitosan and cathodic protection of X70 pipeline steel in seawater[J]. RSC ADVANCES,2017,7(6):3419-3427.
APA	Feng, Panpan,Wan, Kai,Cai, Guowei,Yang, Lihui,&Li, Yantao.(2017).Synergistic protective effect of carboxymethyl chitosan and cathodic protection of X70 pipeline steel in seawater.RSC ADVANCES,7(6),3419-3427.
MLA	Feng, Panpan,et al."Synergistic protective effect of carboxymethyl chitosan and cathodic protection of X70 pipeline steel in seawater".RSC ADVANCES 7.6(2017):3419-3427.

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