The diffusion-dynamical and electrochemical effect mechanism of oriented magnetic graphene on zinc-rich coatings and the electrodynamics and quantum mechanics mechanism of electron conduction in graphene zinc-rich coatings

doi:10.1016/j.jallcom.2019.01.070

	The diffusion-dynamical and electrochemical effect mechanism of oriented magnetic graphene on zinc-rich coatings and the electrodynamics and quantum mechanics mechanism of electron conduction in graphene zinc-rich coatings
	Ding, Rui 1,3; Chen, Si 2; Zhou, Nan 4; Zheng, Yan 4; Li, Bing-jun 1; Gui, Tai-jiang 5; Wang, Xiao 5,6; Li, Wei-hua 2,3; Yu, Hai-bin 4; Tian, Hui-wen 3
	2019-05-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	784 页码:756-768
通讯作者	Ding, Rui([email protected]) ; Li, Wei-hua([email protected])
摘要	Magnetic graphene was prepared by modified polyol methods. Gallic acid-based epoxy resin was synthesized and adopted to enhance the dispersion of graphene. Four kinds of coating were prepared, and they were graphene coatings (G), magnetic graphene coatings (MG), magnetic graphene coatings oriented by magnetic field (MG-MF), magnetic graphene zinc-rich coatings (MG/Zn), magnetic graphene zinc-rich coatings oriented by magnetic field (MG/Zn-MF). Magnetic graphene has a larger size than the graphene, which reduced its delamination in the coatings and weakened the protective ability. After the oriented treatment by magnetic field, the parallel hierarchical arrangement of magnetic graphene significantly increased the diffusion resistance of corrosive medium and improved the corrosion resistance of the coatings. The diffusion kinetics of corrosive media in the coatings was established. However, the orientation of magnetic graphene attenuated the cathodic protection of zinc-rich coatings, due to the reduction of effective electron transport path and active interfacial zinc. The electrons lost by the anode sacrifice of zinc needed to cross two types of potential barriers in the process of migrating to the protected metal. They were metal-graphene potential barrier and graphene-graphene potential barrier. According to the calculation and modeling of electrodynamics and quantum mechanics, electron penetration through the latter barrier was less difficult than the former and graphene facilitated the transfer of electrons between metals. This was also the microscopic mechanism of graphene improving the cathodic protection of zinc-rich coatings. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Magnetic graphene Orientation Anti-corrosion coatings Zinc-rich coatings
DOI	10.1016/j.jallcom.2019.01.070
收录类别	SCI
语种	英语
资助项目	Qingdao Independent Innovation Special Project[16-7-1-2-ZDZXX]###202; Ningbo major scientific and technological projects[Y60309DD03]###201; Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-OS09]###169; AoShan Talents Cultivation Program###180; National Science Fund for Distinguished Young Scholars[51525903]###200; State Key Laboratory for Marine Coatings[20180501DR]###199; China Postdoctoral Science Fund[2018M632726]###198; China Postdoctoral Science Fund[2018M632726]; State Key Laboratory for Marine Coatings[20180501DR]; National Science Fund for Distinguished Young Scholars[51525903]; AoShan talents cultivation program; Qingdao national laboratory for marine science and technology[2017ASTCP-OS09]; Ningbo major scientific and technological projects[Y60309DD03]; Qingdao Independent Innovation Special Project[16-7-1-2-ZDZXX]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000459796400084
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：50[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/155220
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Ding, Rui; Li, Wei-hua
作者单位	1.Yantai Univ, Coll Oceanog, Yantai 264005, Peoples R China 2.Sun Yat Sen Univ, Coll Chem Engn & Technol, Zhuhai 519082, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Zhejiang, Peoples R China 5.Marine Chem Res Inst, State Key Lab Marine Coatings, Qingdao 266072, Peoples R China 6.Ocean Univ China, Qingdao 266100, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Ding, Rui,Chen, Si,Zhou, Nan,et al. The diffusion-dynamical and electrochemical effect mechanism of oriented magnetic graphene on zinc-rich coatings and the electrodynamics and quantum mechanics mechanism of electron conduction in graphene zinc-rich coatings[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,784:756-768.
APA	Ding, Rui.,Chen, Si.,Zhou, Nan.,Zheng, Yan.,Li, Bing-jun.,...&Tian, Hui-wen.(2019).The diffusion-dynamical and electrochemical effect mechanism of oriented magnetic graphene on zinc-rich coatings and the electrodynamics and quantum mechanics mechanism of electron conduction in graphene zinc-rich coatings.JOURNAL OF ALLOYS AND COMPOUNDS,784,756-768.
MLA	Ding, Rui,et al."The diffusion-dynamical and electrochemical effect mechanism of oriented magnetic graphene on zinc-rich coatings and the electrodynamics and quantum mechanics mechanism of electron conduction in graphene zinc-rich coatings".JOURNAL OF ALLOYS AND COMPOUNDS 784(2019):756-768.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
1-s2.0-S092583881930（4929KB）	期刊论文	出版稿	限制开放	CC BY-NC-SA	浏览