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Helium nano-bubble bursting near the nickel surface
Gong, HF; Liu, M; Gao, F; Li, R; Yan, Y; Huang, H; Liu, T; Ren, QS
2017
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
Volume26Issue:11Pages:-
Subtype期刊论文
AbstractWe have investigated the expansion and bursting of a helium nano-bubble near the surface of a nickel matrix using a molecular dynamics simulation. The helium atoms erupt from the bubble in an instantaneous and volcano-like process, which leads to surface deformation consisting of cavity formation on the surface, along with modification and atomic rearrangement at the periphery of the cavity. During the kinetic releasing process, the channel may undergo the "open" and "close" states more than once due to the variation of the stress inside the nano-bubble. The ratio between the number of helium atoms and one of vacancies can directly reflect the releasing rate under different temperatures and crystallographic orientation conditions, respectively. Moreover, a special relationship between the stress and He-to-vacancy ratio is also determined. This model is tested to compare with the experimental result from Hastelloy N alloys implanted by helium ions and satisfactory agreement is obtained.
KeywordEmbedded-atom Potentials Point-defect Properties Molecular-dynamics Gas-release Metals Tungsten Implantation Irradiation Impurities Diffusion
DOI10.1088/1674-1056/26/11/113401
WOS KeywordEMBEDDED-ATOM POTENTIALS ; POINT-DEFECT PROPERTIES ; MOLECULAR-DYNAMICS ; GAS-RELEASE ; METALS ; TUNGSTEN ; IMPLANTATION ; IRRADIATION ; IMPURITIES ; DIFFUSION
Indexed BySCI
Language英语
WOS IDWOS:000414688800001
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Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28674
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Gong, HF,Liu, M,Gao, F,et al. Helium nano-bubble bursting near the nickel surface[J]. CHINESE PHYSICS B,2017,26(11):-.
APA Gong, HF.,Liu, M.,Gao, F.,Li, R.,Yan, Y.,...&Ren, QS.(2017).Helium nano-bubble bursting near the nickel surface.CHINESE PHYSICS B,26(11),-.
MLA Gong, HF,et al."Helium nano-bubble bursting near the nickel surface".CHINESE PHYSICS B 26.11(2017):-.
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