The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating

doi:10.1016/j.ultsonch.2020.105406

IMECH-IR > 先进制造工艺力学实验室

	The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating
	Xu, Jiang 1; Peng, Shuang 1; Li ZY(李正阳)2 ; Jiang, Shuyun 3; Xie, Zong-Han 4; Munroe, Paul 5
通讯作者	Xu, Jiang(xujiang73@nuaa.edu.cn)
发表期刊	ULTRASONICS SONOCHEMISTRY
	2021-03-01
卷号	71 页码:19
ISSN	1350-4177
摘要	To alleviate the cavitation damage of metallic engineering components in hydrodynamic systems operating in marine environments, a NbN nanoceramic coating was synthesized on to a Ti-6Al-4V substrate via a double cathode glow discharge technique. The microstructure of the coating consisted of a similar to 13 mu m thick deposition layer of a hexagonal delta'-NbN phase and a diffusion layer similar to 2 mu m in thickness composed of face-centered cubic (fcc) B1-NaCl-structured (Ti,Nb)N. The NbN coating not only exhibited higher values of H/E and H-2/E than those measured from NbN coatings deposited by other techniques, but also possessed good adhesion to the substrate. The cavitation erosion resistance of the NbN coating in a 3.5 wt% NaCl solution was investigated using an ultrasonic cavitation-induced apparatus combined with a range of electrochemical test methods. Potentiodynamic polarization measurements demonstrated that the NbN coated specimens demonstrated both a higher corrosion potential (E-corr) and lower corrosion current density (i(corr)) than the uncoated substrate. Mott-Schottky analysis, combined with the point defect model (PDM), revealed that, for a given cavitation time, the donor density (N-D) of the passive film on the NbN coating was reduced by 1 similar to 2 orders of magnitude relative to the uncoated Ti-6Al-4V, and the diffusivity of the point defects (D-0) in the passive film grown on the NbN coating was nearly one order of magnitude lower than that on the uncoated substrate. In order to better understand the experimental observations obtained from Mott-Schottky analysis and double-charge layer capacitance measurements, first-principles density-functional theory was employed to calculate the energy of vacancy formation and the adsorption energy for chloride ions for the passive films present on both the NbN coating and bare Ti-6Al-4V.
关键词	NbN nanoceramic coating Ultrasonic cavitation erosion Mott-schottky First-principle Point defect model
DOI	10.1016/j.ultsonch.2020.105406
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000605590700001
关键词[WOS]	MECHANICAL-PROPERTIES ; CORROSION BEHAVIOR ; THIN-FILMS ; TITANIUM ; WEAR ; TI ; 1ST-PRINCIPLES ; SPECTROSCOPY ; SURFACES ; PHASE
WOS研究方向	Acoustics ; Chemistry
WOS类目	Acoustics ; Chemistry, Multidisciplinary
资助项目	General Program of the National Natural Science Foundation of China[52075245] ; Key Program of the National Natural Science Foundation of China[51635004]
项目资助者	General Program of the National Natural Science Foundation of China ; Key Program of the National Natural Science Foundation of China
论文分区	一类
力学所作者排名	3
RpAuthor	Xu, Jiang
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/85931
专题	先进制造工艺力学实验室
作者单位	1.Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Southeast Univ, Dept Mech Engn, 2 Si Pai Lou, Nanjing 210096, Peoples R China; 4.Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia; 5.Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
推荐引用方式 GB/T 7714	Xu, Jiang,Peng, Shuang,Li ZY,et al. The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating[J]. ULTRASONICS SONOCHEMISTRY,2021,71:19.
APA	Xu, Jiang,Peng, Shuang,李正阳,Jiang, Shuyun,Xie, Zong-Han,&Munroe, Paul.(2021).The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating.ULTRASONICS SONOCHEMISTRY,71,19.
MLA	Xu, Jiang,et al."The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating".ULTRASONICS SONOCHEMISTRY 71(2021):19.

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