A sandwich-like structure hybrid coating of cold galvanizing coating/polydopamine on hot-dip galvanized steel with enhanced adhesion and corrosion resistance

doi:10.1007/s11431-022-2326-1

IMR OpenIR

	A sandwich-like structure hybrid coating of cold galvanizing coating/polydopamine on hot-dip galvanized steel with enhanced adhesion and corrosion resistance
	Li, JiWen 1,2; Gao, NingJie 1,2; Zhang, WanYu 1,2; Xu, Long 4; Nwokolo, Kenneth Izuchukwu 1,2; Wu, Hao 1,2; Liu, FuChun 1,2,3; Han, En-Hou 1,2,3
通讯作者	Liu, FuChun(fcliu@imr.ac.cn) ; Han, En-Hou(ehhan@imr.ac.cn)
	2023-05-12
发表期刊	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN	1674-7321
页码	15
摘要	This study aims to enhance the adhesion strength and anti-corrosion performance of the cold galvanizing coating (CGC) applied on the hot-dip galvanized steel (HDG). Polydopamine (PDA) is deposited on the HDG surface with different time ranges and as an interlayer between CGC and HDG through covalent immobilization. The surface morphology and the covalent interaction between PDA/HDG are exhibited by scanning electron microscope (SEM), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The pull-off adhesion tests before and after neutral slat spry tests show an enhanced dry adhesion strength and less adhesion loss of the hybrid CGC/PDA coated HDG compared with the direct CGC coated HDG. In addition, open circuit potential (OCP) reveals that the corrosion protection performance of the hybrid CGC/PDA coated HDG increases by 200% (up to 201 d) and the corrosion density i(corr) attaining about 4.45x10(-7) A/cm(2). Electrochemical impedance spectroscopy (EIS) measurements and X-ray diffraction (XRD) analysis confirm that the precipitate of the stable chelation formed by PDA and Zn2+ between CGC and HDG substrate can also improve the corrosion protection performance. Such a strategy of strengthening adhesion and forming the chelate compound at the HDG surface promises a new route to corrosion protection of CGC on HDG.
关键词	dopamine zinc-rich coatings hot-dip galvanized steel corrosion protection chelate compound
资助者	Ling Chuang Research Project of China National Nuclear Corporation
DOI	10.1007/s11431-022-2326-1
收录类别	SCI
语种	英语
资助项目	Ling Chuang Research Project of China National Nuclear Corporation[E041F212Z1]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
WOS记录号	WOS:000990947900001
出版者	SCIENCE PRESS
引用统计	被引频次：6[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/321006/177633
专题	中国科学院金属研究所
通讯作者	Liu, FuChun; Han, En-Hou
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China 4.Jihua Lab, Foshan 528000, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Li, JiWen,Gao, NingJie,Zhang, WanYu,et al. A sandwich-like structure hybrid coating of cold galvanizing coating/polydopamine on hot-dip galvanized steel with enhanced adhesion and corrosion resistance[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2023:15.
APA	Li, JiWen.,Gao, NingJie.,Zhang, WanYu.,Xu, Long.,Nwokolo, Kenneth Izuchukwu.,...&Han, En-Hou.(2023).A sandwich-like structure hybrid coating of cold galvanizing coating/polydopamine on hot-dip galvanized steel with enhanced adhesion and corrosion resistance.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,15.
MLA	Li, JiWen,et al."A sandwich-like structure hybrid coating of cold galvanizing coating/polydopamine on hot-dip galvanized steel with enhanced adhesion and corrosion resistance".SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2023):15.