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The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating
Xu, Jiang1; Peng, Shuang1; Li ZY(李正阳)2; Jiang, Shuyun3; Xie, Zong-Han4; Munroe, Paul5
Corresponding AuthorXu, Jiang(xujiang73@nuaa.edu.cn)
Source PublicationULTRASONICS SONOCHEMISTRY
2021-03-01
Volume71Pages:19
ISSN1350-4177
AbstractTo 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.
KeywordNbN nanoceramic coating Ultrasonic cavitation erosion Mott-schottky First-principle Point defect model
DOI10.1016/j.ultsonch.2020.105406
Indexed BySCI ; EI
Language英语
WOS IDWOS:000605590700001
WOS KeywordMECHANICAL-PROPERTIES ; CORROSION BEHAVIOR ; THIN-FILMS ; TITANIUM ; WEAR ; TI ; 1ST-PRINCIPLES ; SPECTROSCOPY ; SURFACES ; PHASE
WOS Research AreaAcoustics ; Chemistry
WOS SubjectAcoustics ; Chemistry, Multidisciplinary
Funding ProjectGeneral Program of the National Natural Science Foundation of China[52075245] ; Key Program of the National Natural Science Foundation of China[51635004]
Funding OrganizationGeneral Program of the National Natural Science Foundation of China ; Key Program of the National Natural Science Foundation of China
Classification一类
Ranking3
ContributorXu, Jiang
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/85931
Collection先进制造工艺力学实验室
Affiliation1.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
Recommended Citation
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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