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

IMR OpenIR

	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
	2011
发表期刊	Nuclear Engineering and Design
ISSN	0029-5493
卷号	241 期号:12 页码:4929-4937
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.
部门归属	[hu, h. x.; jiang, s. l.; tao, y. s.; xiong, t. y.; zheng, y. g.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;zheng, yg (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;icpmkaist@yahoo.com
关键词	Large Powder Particles Composite Coatings Slurry Erosion Kinetic Spray Liquid Impact Alloy Microstructure Steels Deposition Resistance
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30391
专题	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.