Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al(2)O(3) coating

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	Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al(2)O(3) coating
	H. X. Hu ; S. L. Jiang ; Y. S. Tao ; T. Y. Xiong ; Y. G. Zheng
刊名	Nuclear Engineering and Design
	2011
卷号	241 期号:12 页码:4929-4937
关键词	large powder particles composite coatings slurry erosion kinetic spray liquid impact alloy microstructure steels deposition resistance
ISSN号	0029-5493
中文摘要	A composite coating was deposited on Inconel 600 substrate by cold spray method using pure Ni powder (60 wt.%) blended with alpha-Al(2)O(3) (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 Al(2)O(3) 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.
原文出处	://WOS:000298764900038
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30391]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. X. Hu,S. L. Jiang,Y. S. Tao,et al. Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al(2)O(3) coating[J]. Nuclear Engineering and Design,2011,241(12):4929-4937.
APA	H. X. Hu,S. L. Jiang,Y. S. Tao,T. Y. Xiong,&Y. G. Zheng.(2011).Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al(2)O(3) coating.Nuclear Engineering and Design,241(12),4929-4937.
MLA	H. X. Hu,et al."Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al(2)O(3) coating".Nuclear Engineering and Design 241.12(2011):4929-4937.