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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, Yantao1
2017
Source PublicationRSC ADVANCES
Volume7Issue:6Pages:3419-3427
SubtypeArticle
AbstractThis 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.
DOI10.1039/c6ra25310e
Indexed BySCI
Language英语
WOS IDWOS:000393749200046
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136314
Collection海洋腐蚀与防护研究发展中心
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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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