Ultralow friction behaviors of hydrogenated fullerene-like carbon films: effect of normal load and surface tribochemistry

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	Ultralow friction behaviors of hydrogenated fullerene-like carbon films: effect of normal load and surface tribochemistry
	Zhang JY(张俊彦); Zhang JY(张俊彦); Zhang B(张斌)
刊名	Tribology Letters
	2011
卷号	41 页码:607-615
关键词	Hydrogenated fullerene-like carbon Ultralow friction Elasticity Tribochemistry
ISSN号	1023-8883
通讯作者	张俊彦
中文摘要	Friction and wear behaviors of hydrogenated fullerene-like (H-FLC) carbon ﬁlms sliding against Si3N4 ceramic balls were performed at different contact loads from 1 to 20 N on a reciprocating sliding tribometer in air. It was found that the ﬁlms exhibited non-Amontonian friction behaviors, the coefﬁcient of friction (COF) decreased with normal contact load increasingthe COF was 0.112 at 1 N contact load, and deceased to ultralow value (0.009) at 20 N load. The main mechanism responsible for low friction and wear under varying contact pressure is governed by hydrogenated carbon transfer ﬁlm that formed and resided at the sliding interfaces. In addi- tion, the unique fullerene-like structures induce well elastic property of the H-FLC ﬁlms (elastic recovery 78%), which beneﬁts the high load tolerance and induces the low wear rate in air condition. For the ﬁlm with an ultralow COF of 0.009 tested under 20 N load in air, time of ﬂight sec- ondary ion mass spectrometry (ToF-SIMS) signals col- lected inside and outside the wear tracks indicated the presence of C2H3 - and C2H5 - fragments after tribological tests on the H-FLC ﬁlms surface. We think that the tribo- chemistry and elastic property of the H-FLC ﬁlms is responsible for the observed friction behaviors, the high load tolerance, and chemical inertness of hydrogenated carbon-containing transfer ﬁlms instead of the graphitization of transfer ﬁlms is responsible for the steady-state low coefﬁcients of friction, wear, and interfacial shear stress.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (Grant nos. 50572108,50975273,50721062,51005110)
语种	英语
WOS记录号	WOS:000287498400014
公开日期	2012-09-24
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/862]
专题	兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Zhang JY(张俊彦); Zhang JY(张俊彦)
推荐引用方式 GB/T 7714	Zhang JY,Zhang JY,Zhang B. Ultralow friction behaviors of hydrogenated fullerene-like carbon films: effect of normal load and surface tribochemistry[J]. Tribology Letters,2011,41:607-615.
APA	张俊彦,张俊彦,&张斌.(2011).Ultralow friction behaviors of hydrogenated fullerene-like carbon films: effect of normal load and surface tribochemistry.Tribology Letters,41,607-615.
MLA	张俊彦,et al."Ultralow friction behaviors of hydrogenated fullerene-like carbon films: effect of normal load and surface tribochemistry".Tribology Letters 41(2011):607-615.