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

CORC > 力学研究所 > 中国科学院力学研究所 > 先进制造工艺力学重点实验室

	The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating
	Xu, Jiang 5; Peng, Shuang 5; Li ZY(李正阳)4; Jiang, Shuyun 3; Xie, Zong-Han 2; Munroe, Paul 1
刊名	ULTRASONICS SONOCHEMISTRY
	2021-03-01
卷号	71 页码:19
关键词	NbN nanoceramic coating Ultrasonic cavitation erosion Mott-schottky First-principle Point defect model
ISSN号	1350-4177
DOI	10.1016/j.ultsonch.2020.105406
通讯作者	Xu, Jiang(xujiang73@nuaa.edu.cn)
英文摘要	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.
分类号	一类
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]
WOS关键词	MECHANICAL-PROPERTIES ; CORROSION BEHAVIOR ; THIN-FILMS ; TITANIUM ; WEAR ; TI ; 1ST-PRINCIPLES ; SPECTROSCOPY ; SURFACES ; PHASE
WOS研究方向	Acoustics ; Chemistry
语种	英语
WOS记录号	WOS:000605590700001
资助机构	General Program of the National Natural Science Foundation of China ; Key Program of the National Natural Science Foundation of China
其他责任者	Xu, Jiang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/85930]
专题	力学研究所_先进制造工艺力学重点实验室
作者单位	1.Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia 2.Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia; 3.Southeast Univ, Dept Mech Engn, 2 Si Pai Lou, Nanjing 210096, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 5.Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Peoples R China;
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.