Effects of sliding velocity and normal load on the tribological behavior of a nanocrystalline Al based composite

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	Effects of sliding velocity and normal load on the tribological behavior of a nanocrystalline Al based composite
	Y. Q. Liu; Z. Han; H. T. Cong
	2010
发表期刊	Wear
ISSN	0043-1648
卷号	268 期号:7-8 页码:976-983
摘要	Nanocrystalline Al based composite containing 39 vol % AlN nanoparticles with enhanced mechanical properties was subjected to friction and wear characterization under various conditions It is interesting to found that an oxygen-rich tribolayer was formed at all sliding speeds and normal loads, which seems to control the tribological behavior of the composite to a large extent Friction coefficient of the composite increases with the increase in sliding velocity, while the wear rate decreases in a hyperbolic trend The improved wear resistance at higher velocity was attributed to increased tribolayer coverage on the worn surface, and the enhanced tribo-oxidation Increase in the applied load leads to steady reduction of the friction coefficient, and slight variation of the wear rate in load range of 5-25 N In this range, tribolayer is the most import feature on worn surface, and wear occurs mainly by delaminating within the tribolayer Whereas, when the load increases up to 35 N, both the friction coefficient and wear rate steeply increase up to high values, indicating a severe wear At this load, tribolayer only covers small part area of worn scar, and delamination happens within the composite underneath the tribolayer (C) 2009 Elsevier B V All rights reserved.
部门归属	[liu, yanqiang; han, zhong; cong, hongtao] chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;cong, ht (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Nanocrystalline Composite Aluminum Sliding Wear Normal Load Sliding Velocity Mechanically Mixed-layer Wear Properties Oxidation Behavior Matrix Composites Ductile Materials Grain-size Friction Copper Aluminum Surface
URL	查看原文
WOS记录号	WOS:000276441200018
引用统计	被引频次：37[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/321006/31332
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Q. Liu,Z. Han,H. T. Cong. Effects of sliding velocity and normal load on the tribological behavior of a nanocrystalline Al based composite[J]. Wear,2010,268(7-8):976-983.
APA	Y. Q. Liu,Z. Han,&H. T. Cong.(2010).Effects of sliding velocity and normal load on the tribological behavior of a nanocrystalline Al based composite.Wear,268(7-8),976-983.
MLA	Y. Q. Liu,et al."Effects of sliding velocity and normal load on the tribological behavior of a nanocrystalline Al based composite".Wear 268.7-8(2010):976-983.