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
刊名	Surface & Coatings Technology
	2008
卷号	202 期号:21 页码:5116-5121
关键词	electrospark deposition microstructure cavitation erosion Al-Si alloy corrosion behavior aluminum-alloy superalloy mechanisms steel
ISSN号	0257-8972
中文摘要	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.
原文出处	://WOS:000258588400007
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33151]
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	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.