Pencil sketch graphene films as solid lubricant on steel surface: Observation of transition to grapehene/amorphous carbon

doi:10.1016/j.solidstatesciences.2017.10.005

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Pencil sketch graphene films as solid lubricant on steel surface: Observation of transition to grapehene/amorphous carbon
	Zhang, Bin 1,2; Xue, Yong 1,3; Gao, Kaixong 1,4; Qiang, Li 1,4; Yu, Yuanlie 1; Gong, Zhenbin 1,4; Liang, Aimin 1; Zhang, Junyan 1; Yang, Baoping 3
刊名	SOLID STATE SCIENCES
	2018-01
卷号	75 页码:71-76
关键词	Graphene Amorphous carbon Lubricant Low friction Low wear
ISSN号	1293-2558
DOI	10.1016/j.solidstatesciences.2017.10.005
英文摘要	During recent years, graphene as a solid lubrication material have been thoroughly studied under nano or micro scales, but rarely reported at industrial conditions. In present work, graphene films as solid lubricant were prepared on the surface of 201 stainless steel substrates by pencil sketch. And then the friction tests from 5 to 65 N were carried out via a homemade tribo-tester and used GCr15 balls (circle divide = 5 mm) as friction pairs. Not surprisingly, graphene films cannot bear the loads beyond 5 N, but interestingly, via gradually increasing the loads, graphene films show prominent load performance and steady state of friction coefficients at about 0.12 while the loads varied from 5 to 65 N. Compared with bare steel, the coefficient of graphene films reduced by about 80%, and the wear volume reduced to 1/28 when variable load (from 5 N to 30 N) were applied. Raman spectra shown that the structure of graphene had been changing into diamond-like carbon films with graphene distributed inside, which was confirmed by HRTEM that graphenes were coming with amorphous carbon. Considering the roughness of steel wafers (170 nm), one can speculate that, with graphene films' protection, the steel has no abrasion but plastic deformation instead. It is concluded that the shearing force induced the film densification via sp(2) to sp(3) changing that enforced cross-linking. This cross-linking carbon matrix was responsible for high load bearing and the graphene exfoliated into graphene under shearing force contribute to low steady-state friction. Benefiting from sketch, one can get a lubrication film on any substrates with complex topography, our results shed light on the growth of graphene films for industrial use. (C) 2017 Elsevier Masson SAS. All rights reserved.
资助项目	National Natural Science Foundation of China[51205383] ; National Natural Science Foundation of China[51611530704] ; National Natural Science Foundation of China[51661135022]
WOS研究方向	Chemistry ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000418566200011
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32955]
专题	石油化工学院图书馆
通讯作者	Zhang, Bin
作者单位	1.Chinese Acad Sci, R&D Ctr Lubricating & Protecting Mat, Lanzhou Inst Chem Phys, Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China 2.Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA 3.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Bin,Xue, Yong,Gao, Kaixong,et al. Pencil sketch graphene films as solid lubricant on steel surface: Observation of transition to grapehene/amorphous carbon[J]. SOLID STATE SCIENCES,2018,75:71-76.
APA	Zhang, Bin.,Xue, Yong.,Gao, Kaixong.,Qiang, Li.,Yu, Yuanlie.,...&Yang, Baoping.(2018).Pencil sketch graphene films as solid lubricant on steel surface: Observation of transition to grapehene/amorphous carbon.SOLID STATE SCIENCES,75,71-76.
MLA	Zhang, Bin,et al."Pencil sketch graphene films as solid lubricant on steel surface: Observation of transition to grapehene/amorphous carbon".SOLID STATE SCIENCES 75(2018):71-76.