Evaluation of the corrosion protection of defective polyaniline/epoxy coating by localized electrochemical impedance spectroscopy

IMR OpenIR

	Evaluation of the corrosion protection of defective polyaniline/epoxy coating by localized electrochemical impedance spectroscopy
	Zhang, Yingjun; Shao, Yawei; Meng, Guozhe; Zhang, Tao; Li, Ping; Wang, Fuhui; shaoyawei@hrbeu.edu.cn
	2015
发表期刊	JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
ISSN	1945-9645
卷号	12 期号:4 页码:777-785
摘要	Defective epoxy varnish and hydrofluoric acid-doped polyaniline/epoxy (PANI-HF/EP) coatings were coated on the surface of an AZ91D magnesium alloy. The corrosion protection of the defective coatings was evaluated in 0.05 M NaCl by localized electrochemical impedance spectroscopy. Then, the surface of AZ91D magnesium alloy beneath the coating was analyzed by scanning electron microscopy- and energy dispersive X-ray spectroscopy. The results indicated that the defective epoxy varnish coating could not protect the magnesium alloy because it only served as an electrolyte barrier. By contrast, the PANI-HF/EP coating served not only as an electrolyte barrier, but also facilitated the formation of a protective layer by redox processes. Therefore, the defective PANI-HF/EP coating could protect magnesium alloy from corrosion.
部门归属	[zhang, yingjun ; li, ping] harbin engn univ, coll shipbldg engn, harbin 150001, peoples r china ; [zhang, yingjun ; shao, yawei ; meng, guozhe ; zhang, tao ; wang, fuhui] harbin engn univ, corros & protect lab, coll mat sci & chem engn, harbin 150001, peoples r china ; [shao, yawei ; meng, guozhe ; zhang, tao ; wang, fuhui] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china
关键词	Polyaniline Coating Magnesium Alloy Corrosion Leis
收录类别	sci
语种	英语
WOS记录号	WOS:000360084400015
引用统计	被引频次：20[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/321006/74835
专题	中国科学院金属研究所
通讯作者	shaoyawei@hrbeu.edu.cn
推荐引用方式 GB/T 7714	Zhang, Yingjun,Shao, Yawei,Meng, Guozhe,et al. Evaluation of the corrosion protection of defective polyaniline/epoxy coating by localized electrochemical impedance spectroscopy[J]. JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH,2015,12(4):777-785.
APA	Zhang, Yingjun.,Shao, Yawei.,Meng, Guozhe.,Zhang, Tao.,Li, Ping.,...&shaoyawei@hrbeu.edu.cn.(2015).Evaluation of the corrosion protection of defective polyaniline/epoxy coating by localized electrochemical impedance spectroscopy.JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH,12(4),777-785.
MLA	Zhang, Yingjun,et al."Evaluation of the corrosion protection of defective polyaniline/epoxy coating by localized electrochemical impedance spectroscopy".JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH 12.4(2015):777-785.