Correlation of microstructure and constitutive behaviour of sintered silver particles via nanoindentation

doi:10.1016/j.ijmecsci.2019.105020

IMECH-IR > 非线性力学国家重点实验室

	Correlation of microstructure and constitutive behaviour of sintered silver particles via nanoindentation
	Long X1 ; Hu B 2; Feng YH(冯义辉)3 ; Chang C 4; Li MY 2
通讯作者	Long, Xu([email protected]) ; Li, Mingyu([email protected])
发表期刊	INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
	2019-10-01
卷号	161 页码:9
ISSN	0020-7403
摘要	During the sintering process, a three-dimensional network-like porous structure forms as the consequences of atom diffusion and neck formation among silver particles. In this paper, two representative types of pressureless sintered silver particles, in, silver nanoparticles (AgNP) and silver microparticles (AgMP), are investigated to reveal the intrinsic correlation between microstructure and constitutive behaviour. The heterogeneous microstructure is found to result in distinguishing differences in terms of morphology and thermal stability. The difference of sintering mechanisms between these two types of silver pastes are observed by a scanning electron microscope and discussed. Regarding thermal stability, the effect of particle size and shape on the sintering temperature and mass loss are evaluated using the thermogravimetric analysis and the differential scanning calorimetry. The microstructural effect on the mechanical behaviour of both sintered AgNP and AgMP samples is measured by performing nanoindentations with a Berkovich indenter penetrated up to 2000 nm with different indentation strain rates. During indentation, Young's modulus and hardness are measured as the functions of penetration depth. By solving dimensionless equations, the parameters of a power-law constitutive model are obtained analytically based on the integrated work done in the loading stage and the contact stiffness in the unloading stage in the nanoindentation experiments. The correlation between microstructure and constitutive behaviour is elucidated by the comparison of sintered AgNP and AgMP but further investigations related to the size and shape effects of particles are expected.
关键词	Silver nanoparticles Silver microparticles Nanoindentation Microstructure Constitutive behaviour
DOI	10.1016/j.ijmecsci.2019.105020
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000496863500005
关键词[WOS]	STRAIN-RATE SENSITIVITY ; LOW-TEMPERATURE ; INSTRUMENTED INDENTATION ; PASTE
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
资助项目	National Natural Science Foundation of China[51508464] ; Natural Science Foundation of Shaanxi Province[2017JM1013] ; Astronautics Supporting Technology Foundation of China[2019-HT-XG] ; Fundamental Research Funds for the Central Universities[3102018ZY015] ; PhD Research Startup Foundation of Taiyuan University of Science and Technology[201704]
项目资助者	National Natural Science Foundation of China ; Natural Science Foundation of Shaanxi Province ; Astronautics Supporting Technology Foundation of China ; Fundamental Research Funds for the Central Universities ; PhD Research Startup Foundation of Taiyuan University of Science and Technology
论文分区	一类
力学所作者排名	3
RpAuthor	Long, Xu ; Li, Mingyu
引用统计	被引频次：60[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81203
专题	非线性力学国家重点实验室
作者单位	1.Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Shaanxi, Peoples R China; 2.Harbin Inst Technol, Shenzhen Key Lab Adv Mat, Shenzhen Grad Sch Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Taiyuan Univ Sci & Technol, Sch Appl Sci, Taiyuan 030024, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Long X,Hu B,Feng YH,et al. Correlation of microstructure and constitutive behaviour of sintered silver particles via nanoindentation[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2019,161:9.Rp_Au:Long, Xu, Li, Mingyu
APA	Long X,Hu B,冯义辉,Chang C,&Li MY.(2019).Correlation of microstructure and constitutive behaviour of sintered silver particles via nanoindentation.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,161,9.
MLA	Long X,et al."Correlation of microstructure and constitutive behaviour of sintered silver particles via nanoindentation".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 161(2019):9.

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