Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity

doi:10.3390/nano12234191

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity
	Hu, Jianqiao 2,3; Zeng, Qinglei 1
刊名	NANOMATERIALS
	2022-12-01
卷号	12 期号:23 页码:13
关键词	adhesion and plasticity friction coefficient wear rate molecular dynamics nanoscratch simulation
DOI	10.3390/nano12234191
通讯作者	Hu, Jianqiao(jianqiaohu@imech.ac.cn) ; Zeng, Qinglei(qzeng@bit.edu.cn)
英文摘要	Friction and wear are two main tribological behaviors that are quite different for contact surfaces of distinct properties. Conventional studies generally focus on a specific material (e.g., copper or iron) such that the tribological result is not applicable to the other contact systems. In this paper, using a group of virtual materials characterized by coarse-grained potentials, we studied the effect of interfacial adhesion and material plasticity on friction and wear by scratching a rigid tip over an atomic smooth surface. Due to the combined effects of adhesion and plasticity on the nanoscratch process, the following findings are revealed: (1) For shallow contact where interfacial adhesion dominates friction, both friction coefficient and wear rate increase as the adhesion increases to a critical value. For deep contact where plasticity prevails, the variation of friction coefficient and wear rate is limited as the adhesion varies. (2) For weak and strong interfacial adhesions, the friction coefficient exhibits different dependence on the scratch depth, whereas the wear rate becomes higher as the scratch depth increases. (3) As the material hardness increases, both the friction coefficient and wear rate decrease in shallow and deep contacts.
资助项目	National Natural Science Foundation of China ; [2020-JCJQ] ; [GFJQ2126-007] ; [12172358]
WOS关键词	MOLECULAR-DYNAMICS ; BEHAVIOR ; COPPER
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000896222400001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/91207]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Hu, Jianqiao; Zeng, Qinglei
作者单位	1.Inst Adv Struct Technol, Beijing Inst Technol, Beijing 100081, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Hu, Jianqiao,Zeng, Qinglei. Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity[J]. NANOMATERIALS,2022,12(23):13.
APA	Hu, Jianqiao,&Zeng, Qinglei.(2022).Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity.NANOMATERIALS,12(23),13.
MLA	Hu, Jianqiao,et al."Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity".NANOMATERIALS 12.23(2022):13.