Numerical simulation of diffusivity of hydrogen in thin tubular metallic membranes affected by self-stresses

doi:10.1016/j.ijhydene.2003.10.007

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	Numerical simulation of diffusivity of hydrogen in thin tubular metallic membranes affected by self-stresses
	Zhang, WS ; Hou, MQ ; Wang, HY ; Fu, YB
刊名	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
	2004-09-01
卷号	29 期号:11 页码:1165-1172
关键词	Hydrogen Diffusion Diffusion Coefficient Self-stress Thin Membranes
ISSN号	0360-3199
DOI	10.1016/j.ijhydene.2003.10.007
英文摘要	Based on the self-stress theory for hydrogen in thin tubular shells, we numerically calculate apparent diffusion coefficients (ADCs) of hydrogen in membranes obtained from the time-lag and half-rise methods under chemopotential- and flux-step boundary conditions. It is found that ADCs differ from the diffusion coefficient under stress-free conditions when either the initial concentration or the chemopotential-step (or flux-step) is taken to be a nonzero value. At the same time, effects of other parameters on values of ADC are discussed as well. The theoretical results are qualitatively consistent with the available experimental data. Our results indicate that a small current will give the minimum error in determining the diffusion coefficient while the initial hydrogen content is nonzero. (C) 2003 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000221946700011
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/82029]
专题	中国科学院化学研究所
通讯作者	Zhang, WS
作者单位	1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China
推荐引用方式 GB/T 7714	Zhang, WS,Hou, MQ,Wang, HY,et al. Numerical simulation of diffusivity of hydrogen in thin tubular metallic membranes affected by self-stresses[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2004,29(11):1165-1172.
APA	Zhang, WS,Hou, MQ,Wang, HY,&Fu, YB.(2004).Numerical simulation of diffusivity of hydrogen in thin tubular metallic membranes affected by self-stresses.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,29(11),1165-1172.
MLA	Zhang, WS,et al."Numerical simulation of diffusivity of hydrogen in thin tubular metallic membranes affected by self-stresses".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 29.11(2004):1165-1172.