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Correlation of microstructure and constitutive behaviour of sintered silver particles via nanoindentation
Long X1; Hu B2; Feng YH(冯义辉)3; Chang C4; Li MY2
Corresponding AuthorLong, Xu(xulong@nwpu.edu.cn) ; Li, Mingyu(myli@hit.edu.cn)
Source PublicationINTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
2019-10-01
Volume161Pages:9
ISSN0020-7403
AbstractDuring 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.
KeywordSilver nanoparticles Silver microparticles Nanoindentation Microstructure Constitutive behaviour
DOI10.1016/j.ijmecsci.2019.105020
Indexed BySCI ; EI
Language英语
WOS IDWOS:000496863500005
WOS KeywordSTRAIN-RATE SENSITIVITY ; LOW-TEMPERATURE ; INSTRUMENTED INDENTATION ; PASTE
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding ProjectNational 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]
Funding OrganizationNational 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
Classification一类
Ranking3
ContributorLong, Xu ; Li, Mingyu
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81203
Collection非线性力学国家重点实验室
Affiliation1.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
Recommended Citation
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.
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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