Magnetic fluid based on mussel inspired chemistry as corrosion-resistant coating of NdFeB magnetic material

doi:10.1016/j.cej.2019.02.126

	Magnetic fluid based on mussel inspired chemistry as corrosion-resistant coating of NdFeB magnetic material
	Ouyang, Yibo 1,2; Qiu, Ri 1; Xiao, Yamei 3; Shi, Zhiqiang 2; Hu, Shugang 4; Zhang, Yan 4; Chen, Ming 5; Wang, Peng6
	2019-07-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	368 页码:331-339
通讯作者	Qiu, Ri([email protected])
摘要	Finding durable coating onto NdFeB magnetic material is critical for its usage in harshly corrosive environment. In this report, to the best of our knowledge, magnetic fluid is proposed as the versatile coating to prohibit the corrosion of magnetic material for the first time. Mussel inspired chemistry for polydopamine coating and Michael reaction with addition of dodecanethiol lead to hydrophobic/superoleophilic nanostructured Fe3O4, which is utilized to prepare magnetic fluid. The spontaneous attraction force between NdFeB and magnetic fluid enables fluid as the coating to cover the magnet surface, showing exceptional inhibition effect to underneath metal. When immersed in 3.5 wt% NaCl solution for 30 days, corrosion current density of NdFeB covered with magnetic fluid is only 1.74x10(-3) mA/cm(2), which is approximately three orders of magnitude lower than that of bare NdFeB with corrosion current density 1.01 mA/cm(2). Even after exposure for 8 days in more severe condition acidic, salt spray environment, magnetic fluid achieves the corrosion current density of 1.31x10(-3) mA/cm(2) without the occurrence of corrosion. In contrast, thick rust layer has formed on bare NdFeB during the same exposure period. Moreover, magnetic fluid covering on NdFeB behaves excellent self-healing property. Even being abraded and cut for multiple times, magnetic fluid still performs prominent corrosion inhibition to NdFeB, illustrating exceptional resistance to external mechanical damage.
关键词	NdFeB Corrosion inhibition Magnetic fluid Dopamine Self-healing
DOI	10.1016/j.cej.2019.02.126
收录类别	SCI
语种	英语
资助项目	Shandong Provincial Education Association for International Exchanges###114; Natural Science Foundation of Shandong Province[ZR2017MF054]###113; Qingdao National Laboratory for Marine Science and Technology[QNLM2016ORP0413]###112; National Natural Science Foundation of China[41576079]###111; National Natural Science Foundation of China[41576079]; Qingdao National Laboratory for Marine Science and Technology[QNLM2016ORP0413]; Natural Science Foundation of Shandong Province[ZR2017MF054]; Shandong Provincial Education Association for International Exchanges
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000462769600031
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：30[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/337002/154920
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Qiu, Ri
作者单位	1.Luoyang Ship Mat Res Inst, State Key Lab Marine Corros & Protect, Qingdao 266101, Shandong, Peoples R China 2.China Univ Petr Huadong, Sch Mat Sci & Engn, Qingdao 266580, Shandong, Peoples R China 3.Qingdao Binhai Univ, Sch Mech & Elect Engn, Qingdao 266555, Shandong, Peoples R China 4.Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266590, Shandong, Peoples R China 5.Shandong Univ Sci & Technol, Coll Math & Syst Sci, Qingdao 266590, Shandong, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Ouyang, Yibo,Qiu, Ri,Xiao, Yamei,et al. Magnetic fluid based on mussel inspired chemistry as corrosion-resistant coating of NdFeB magnetic material[J]. CHEMICAL ENGINEERING JOURNAL,2019,368:331-339.
APA	Ouyang, Yibo.,Qiu, Ri.,Xiao, Yamei.,Shi, Zhiqiang.,Hu, Shugang.,...&Wang, Peng.(2019).Magnetic fluid based on mussel inspired chemistry as corrosion-resistant coating of NdFeB magnetic material.CHEMICAL ENGINEERING JOURNAL,368,331-339.
MLA	Ouyang, Yibo,et al."Magnetic fluid based on mussel inspired chemistry as corrosion-resistant coating of NdFeB magnetic material".CHEMICAL ENGINEERING JOURNAL 368(2019):331-339.

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