Polyaniline for corrosion prevention of mild steel coupled with copper

doi:10.1016/j.electacta.2007.02.057

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	Polyaniline for corrosion prevention of mild steel coupled with copper
	Chen, Y.; Wang, X. H.; Li, J.; Lu, J. L.; Wang, F. S.
刊名	ELECTROCHIMICA ACTA
	2007-05-05
卷号	52 期号:17 页码:5392-5399
关键词	Mild Steel Copper Galvanic Corrosion Polyaniline Electrochemical Impedance Spectroscopy
ISSN号	0013-4686
DOI	10.1016/j.electacta.2007.02.057
英文摘要	Polyaniline emeraldine base/epoxy resin (EB/ER) coating was investigated for corrosion protection of mild steel coupled with copper in 3.5% NaCl solution. EB/ER coating with 5-10 wt% EB had long-term corrosion resistance on both uncoupled steel and copper due to the passivation effect of EB on the metal surfaces. During the 150 immersion days, the impedance at 0.1 Hz for the coating increased in the first 1-40 days and subsequently remained constant above 10(9) Omega cm(2), whereas that for pure ER coating fell below 10(6) Omega cm(2) after only 30 or 40 days. Immersion tests on coated steel-copper galvanic couple showed that EB/ER coating offered 100 times more protection than ER coating against steel dissolution and coating delamination on copper, which was mainly attributed to the passive metal oxide films formed by EB blocking both the anodic and cathodic reactions. Salt spray tests showed that 100 mu m EB/ER coating protected steel-copper couple for at least 2000 h. (c) 2007 Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000246609300008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/60673]
专题	中国科学院化学研究所
通讯作者	Wang, X. H.
作者单位	Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Chen, Y.,Wang, X. H.,Li, J.,et al. Polyaniline for corrosion prevention of mild steel coupled with copper[J]. ELECTROCHIMICA ACTA,2007,52(17):5392-5399.
APA	Chen, Y.,Wang, X. H.,Li, J.,Lu, J. L.,&Wang, F. S..(2007).Polyaniline for corrosion prevention of mild steel coupled with copper.ELECTROCHIMICA ACTA,52(17),5392-5399.
MLA	Chen, Y.,et al."Polyaniline for corrosion prevention of mild steel coupled with copper".ELECTROCHIMICA ACTA 52.17(2007):5392-5399.