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Interface energy and its influence on interface fracture between metal and ceramic thin films in nanoscale
Liang LH(梁立红); You XM(尤雪梅); Ma HS(马寒松); Wei YG(魏悦广); Liang LH
Source PublicationJournal of Applied Physics
2010
Volume108Issue:8Pages:84317
ISSN0021-8979
AbstractA theoretical model about the size-dependent interface energy between two thin films with different materials is developed by considering the chemical bonding contribution based on the thermodynamic expressions and the structure strain contribution based on the mechanical characteristics. The interface energy decreases with reducing thickness of thin films, and is determined by such available thermodynamic and mechanical parameters as the melting entropy, the melting enthalpy, the shear modulus of two materials, etc. The predicted interface energies of some metal/MgO and metal/Al2O3 interfaces based on the model are consistent with the results based on the molecular mechanics calculation. Furthermore, the interface fracture properties of Ag/MgO and Ni/Al2O3 based on the atomistic simulation are further compared with each other. The fracture strength and the toughness of the interface with the smaller structure interface energy are both found to be lower. The intrinsic relations among the interface energy, the interface strength, and the fracture toughness are discussed by introducing the related interface potential and the interface stress. The microscopic interface fracture toughness is found to equal the structure interface energy in nanoscale, and the microscopic fracture strength is proportional to the fracture toughness. (C) 2010 American Institute of Physics. [doi:10.1063/1.3501090]
KeywordMisfit Dislocation Metal/oxide Interfaces Atomistic Simulation Toughness Stresses Scale Model
DOI10.1063/1.3501090
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Indexed BySCI
Language英语
WOS IDWOS:000283745100132
WOS KeywordMISFIT DISLOCATION ; METAL/OXIDE INTERFACES ; ATOMISTIC SIMULATION ; TOUGHNESS ; STRESSES ; SCALE ; MODEL
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
Funding OrganizationNSFC [10802088, 10832008, 10702070] ; LNM [10721202, 10932011]
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43447
Collection非线性力学国家重点实验室
Corresponding AuthorLiang LH
Recommended Citation
GB/T 7714
Liang LH,You XM,Ma HS,et al. Interface energy and its influence on interface fracture between metal and ceramic thin films in nanoscale[J]. Journal of Applied Physics,2010,108(8):84317.
APA 梁立红,尤雪梅,马寒松,魏悦广,&Liang LH.(2010).Interface energy and its influence on interface fracture between metal and ceramic thin films in nanoscale.Journal of Applied Physics,108(8),84317.
MLA 梁立红,et al."Interface energy and its influence on interface fracture between metal and ceramic thin films in nanoscale".Journal of Applied Physics 108.8(2010):84317.
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