Simulation of migration and coalescence of helium bubbles in nickel

被引：19

作者：

Zhang, Wei ^{[1
,2
]}

Han, Han ^{[1
]}

Dai, Jianxing ^{[1
]}

Ren, Cuilan ^{[1
,2
]}

Wang, Chengbin ^{[1
,2
]}

Yan, Long ^{[1
]}

Huang, Hefei ^{[1
]}

Zhu, Zhiyuan ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2019年 / 518卷

基金：

中国国家自然科学基金;

关键词：

MOLECULAR-DYNAMICS; MECHANISM; ENERGY; DIFFUSION; GROWTH; COPPER; NI;

D O I：

10.1016/j.jnucmat.2019.02.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanism of migration and coalescence of nanoscale helium bubbles was studied using molecular dynamics. Small helium bubbles in nickel were observed to migrate in a random-walk style at temperatures higher than 0.7 T-m (melting point). Coalescence occurred when two helium bubbles approached each other, leading to the formation of a large bubble. The motion of the helium bubbles in nickel proceeds by displacement of nickel atoms on the surface, which causes the rearrangement of other nickel atoms, resulting surface diffusion. These findings indicate that migration and coalescence may be the possible growth mechanism for small helium bubbles in nickel at high temperature. (C) 2019 Published by Elsevier B.V.

引用

页码：48 / 53

页数：6

共 50 条

[21] On the coalescence speed of bubbles
Thoroddsen, ST
Etoh, TG
Takehara, K
Ootsuka, N
PHYSICS OF FLUIDS, 2005, 17 (07) : 1 - 4
[22] Simulation study of evolution of helium bubbles in bulk tungsten
Zhan, Jie
Ye, Minyou
Mao, Shifeng
Ren, Jincai
Xu, Xinyuan
FUSION ENGINEERING AND DESIGN, 2019, 146 : 983 - 986
[23] Coalescence of helium clusters In titanium crystals: Molecular dynamics simulation
Key Laboratory for Radiation Physics and Technology, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
不详
Wuli Xuebao, 2008, 8 (5159-5164):
[24] Coalescence of helium clusters in titanium crystals: Molecular dynamics simulation
Xie Zhao
Hou Qing
Wang Jun
Sun Tie-Ying
Long Xing-Gui
Luo Shun-Zhong
ACTA PHYSICA SINICA, 2008, 57 (08) : 5159 - 5164
[25] Atomistic simulations and experimental measurements of helium nano-bubbles in nickel
Torres, E.
Judge, C.
Rajakumar, H.
Korinek, A.
Pencer, J.
Bickel, G.
JOURNAL OF NUCLEAR MATERIALS, 2017, 495 : 475 - 483
[26] THERMAL-GRADIENT MIGRATION OF HELIUM BUBBLES IN URANIUM-DIOXIDE
BUESCHER, BJ
MEYER, RO
JOURNAL OF NUCLEAR MATERIALS, 1973, 48 (02) : 143 - 156
[27] Partial coalescence of soap bubbles
Pucci, G.
Harris, D. M.
Bush, J. W. M.
PHYSICS OF FLUIDS, 2015, 27 (06)
[28] COALESCENCE AND BREAKUP OF BUBBLES IN LIQUIDS
OTAKE, T
TONE, S
NAKAO, K
MITSUHASHI, Y
CHEMICAL ENGINEERING SCIENCE, 1977, 32 (04) : 377 - 383
[29] Interaction of displacement cascade with helium bubbles in α-iron: Computer simulation
Pu, J.
Yang, L.
Gao, F.
Heinisch, H. L.
Kurtz, R. J.
Zu, X. T.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2008, 266 (18): : 3993 - 3999
[30] Coalescence of bubbles sampled for imaging
Bailey, M
Torrealba-Vargas, J
Gomez, C
Finch, JA
MINERALS ENGINEERING, 2005, 18 (01) : 125 - 126

← 1 2 3 4 5 →