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Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al2O3 coating
Hu, H. X.; Jiang, S. L.; Tao, Y. S.; Xiong, T. Y.; Zheng, Y. G.
Corresponding AuthorZheng, Y. G.(icpmkaist@yahoo.com)
2011-12-01
Source PublicationNUCLEAR ENGINEERING AND DESIGN
ISSN0029-5493
Volume241Issue:12Pages:4929-4937
AbstractA composite coating was deposited on Inconel 600 substrate by cold spray method using pure Ni powder (60 wt.%) blended with alpha-Al2O3 (40 wt.%) as feedstock. It is expected to be applied to repair the bellows eroded by the liquid droplet erosion (LDE). Microstructure of the coating was observed using optical microscope (OM) and scanning electron microscopy (SEM). Microhardness of the coating was determined by Vickers hardness tester. Cavitation erosion (CE) experiments were carried out in the distilled water. Jet impingement erosion (JIE) experiments were performed in slurry containing 1 wt.% quartz particle with the flow velocity of 15 m/s at impingement angles of 30 degrees, 60 degrees and 90 degrees, respectively. Cumulative mass loss vs. testing time was used to evaluate the erosion rate of the coating. The erosion mechanism was analyzed by OM, SEM, X-ray diffraction (XRD) and the microhardness measurement. The results show that the composite coating has compact microstructure and relatively high hardness. The resistance to CE of the coating is not as good as that of Inconel 600 substrate due to the weak bonds of the Al2O3 particles. However, the results of the JIE test indicate that the slurry erosion resistance of the coating is better than that of Inconel 600 at the impact angles of 30 degrees and 60 degrees, but not at the normal impact angle. (C) 2011 Elsevier B.V. All rights reserved.
DOI10.1016/j.nucengdes.2011.09.038
Indexed BySCI
Language英语
WOS Research AreaNuclear Science & Technology
WOS SubjectNuclear Science & Technology
WOS IDWOS:000298764900038
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:62[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/107138
Collection中国科学院金属研究所
Corresponding AuthorZheng, Y. G.
AffiliationChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Hu, H. X.,Jiang, S. L.,Tao, Y. S.,et al. Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al2O3 coating[J]. NUCLEAR ENGINEERING AND DESIGN,2011,241(12):4929-4937.
APA Hu, H. X.,Jiang, S. L.,Tao, Y. S.,Xiong, T. Y.,&Zheng, Y. G..(2011).Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al2O3 coating.NUCLEAR ENGINEERING AND DESIGN,241(12),4929-4937.
MLA Hu, H. X.,et al."Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al2O3 coating".NUCLEAR ENGINEERING AND DESIGN 241.12(2011):4929-4937.
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