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	Fabrication of a nanocrystalline ni-co/coo functionally graded layer with excellent electrochemical corrosion and tribological performance
	Wang, Liping; Zhang, Junyan; Zeng, Zhixiang; Lin, Yiming; Hu, Litian; Xue, Qunji
刊名	Nanotechnology
	2006-09-28
卷号	17期号:18页码:4614-4623
ISSN号	0957-4484
DOI	10.1088/0957-4484/17/18/014
通讯作者	Xue, qunji(qjxue@ns.lzb.ac.cn)
英文摘要	Nanocrystalline (nc) ni-co/coo functionally graded materials with excellent lubricating, high anti-corrosion and anti-wear performance were fabricated by electrodeposition and subsequent cyclic thermal oxidation and quenching. transmission electron microscopy and energy dispersive x-ray spectroscopy investigations show that bulk ni-co gradient deposits with an average grain size in the range of 13-40 nm demonstrated a graded structure transition from face-centred cubic to hexagonal close packed and graded composition changes from ni-rich to co-rich regions with the increase in deposit thickness. x-ray diffraction and x-ray photoelectron spectroscopy analysis indicated the surface layer of nc ni-co graded materials to be mainly composed of dense and ultrafine coo with a (i 11) preferred orientation. the nc ni-co/coo functionally graded materials exhibited significantly enhanced corrosion resistance in both naoh and nacl solutions and remarkably improved wear resistance and dry self-lubricating performance when compared with the nc ni and ni-co graded deposits under dry sliding wear conditions. the higher corrosion and tribological performance of nc ni-co/coo graded materials can be attributed to the graded microstructure within the deposits, the anti-corrosion barrier of a dense oxide layer and the solid lubrication effect of coo-rich tribo-surface films.
WOS关键词	GRAIN-SIZE ; SLIDING WEAR ; BEHAVIOR ; COATINGS ; SURFACE ; ALLOYS ; ELECTRODEPOSITION ; SULFATE ; DIAMOND ; METALS
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000241157000014
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2379424
专题	中国科学院大学
通讯作者	Xue, Qunji
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Wang, Liping,Zhang, Junyan,Zeng, Zhixiang,et al. Fabrication of a nanocrystalline ni-co/coo functionally graded layer with excellent electrochemical corrosion and tribological performance[J]. Nanotechnology,2006,17(18):4614-4623.
APA	Wang, Liping,Zhang, Junyan,Zeng, Zhixiang,Lin, Yiming,Hu, Litian,&Xue, Qunji.(2006).Fabrication of a nanocrystalline ni-co/coo functionally graded layer with excellent electrochemical corrosion and tribological performance.Nanotechnology,17(18),4614-4623.
MLA	Wang, Liping,et al."Fabrication of a nanocrystalline ni-co/coo functionally graded layer with excellent electrochemical corrosion and tribological performance".Nanotechnology 17.18(2006):4614-4623.

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