Microstructure and cavitation erosion characteristics of Al-Si alloy coating prepared by electrospark deposition

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	Microstructure and cavitation erosion characteristics of Al-Si alloy coating prepared by electrospark deposition
	W. F. Wang; M. C. Wang; F. J. Sun; Y. G. Zheng; J. M. Jiao
	2008
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	202 期号:21 页码:5116-5121
摘要	With a high-power electrospark deposition (ESD) processing unit, an Al-Si coating was prepared on ZL101 aluminum alloy substrate. The Al-Si coating was composed of many thin deposited layers with the thickness of 30-40 mu m and showed peculiar microstructural characteristics. The eutectic Si phase, which was homogenously distributed in the coating, existed in the form of latticed morphology with characteristics of being composed of many fine (similar to 50 nm size) spherical Si particles. Hardness tests showed that the microhardness of the coating was in the range of 100-110 HV with a small fluctuation, which implied that the deposited coating possess a uniform strength through the whole coating. After 4 hours' cavitation erosion tests, the cumulative volume loss of Al-Si coating (9.03 mm(3)) was only 31.5% of the substrate (28.66 mm(3)), which indicated that the AI-Si coating possessed better cavitation erosion resistance than ZL101 substrate. The excellent performance of Al-Si coating was mainly attributed to the peculiar microstructure and the formation of fine spherical Si particles. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[wang, wei-fu; wang, mao-cai; zheng, yu-gui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [wang, wei-fu; sun, feng-jiu] ne univ, coll sci, shenyang 110004, peoples r china. [jiao, jian-min] xian aeroengine controls co china, xian 710077, peoples r china.;wang, wf (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wenchui rd, shenyang 110016, peoples r china;wwfphd@yahoo.com.cn
关键词	Electrospark Deposition Microstructure Cavitation Erosion Al-si Alloy Corrosion Behavior Aluminum-alloy Superalloy Mechanisms Steel
URL	查看原文
WOS记录号	WOS:000258588400007
引用统计	被引频次：28[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/321006/33151
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. F. Wang,M. C. Wang,F. J. Sun,et al. Microstructure and cavitation erosion characteristics of Al-Si alloy coating prepared by electrospark deposition[J]. Surface & Coatings Technology,2008,202(21):5116-5121.
APA	W. F. Wang,M. C. Wang,F. J. Sun,Y. G. Zheng,&J. M. Jiao.(2008).Microstructure and cavitation erosion characteristics of Al-Si alloy coating prepared by electrospark deposition.Surface & Coatings Technology,202(21),5116-5121.
MLA	W. F. Wang,et al."Microstructure and cavitation erosion characteristics of Al-Si alloy coating prepared by electrospark deposition".Surface & Coatings Technology 202.21(2008):5116-5121.