Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al2O3 coating

doi:10.1016/j.nucengdes.2011.09.038

IMR OpenIR

	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.
通讯作者	Zheng, Y. G.(icpmkaist@yahoo.com)
	2011-12-01
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-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.
DOI	10.1016/j.nucengdes.2011.09.038
收录类别	SCI
语种	英语
WOS研究方向	Nuclear Science & Technology
WOS类目	Nuclear Science & Technology
WOS记录号	WOS:000298764900038
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：83[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/107138
专题	中国科学院金属研究所
通讯作者	Zheng, Y. G.
作者单位	Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 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.