Estimation of interdiffusivity of the NiAl Phase in Ni-Al binary system

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	Estimation of interdiffusivity of the NiAl Phase in Ni-Al binary system
	H. Wei; X. F. Sun; Q. Zheng; H. R. Guan; Z. Q. Hu
	2004
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	52 期号:9 页码:2645-2651
摘要	Interdiffusivity of the NiAl phase in Ni-Al binary system has been estimated as a function of composition in NiAl phase formed on pure nickel using the vapor-solid technique. The calculated results indicate that interdiffusivity in as-formed NiAl phase shows a minimum at about 48 at.% Al. deviating slightly from the stoichiometry. The fact can be explained by the concentration dependence of the thermodynamic factor and the creation of Al-vacancies on the Ni-rich side of stoichiometry. It is observed that activation energy for interdiffusion in the as-formed NiAl phase is particularly sensitive to the presence of constitutional vacancies, which is probably related to the lattice parameter of NiAl phase. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;wei, h (reprint author), chinese acad sci, inst met res, state key lab corros & protect, wen hua rd 72, shenyang 110016, peoples r china;hwei@imr.ac.cn
关键词	Nickel Aluminide Diffusion Interdiffusivity Diffusion Couples Single-phase Alloys Vacancies Nickel
URL	查看原文
WOS记录号	WOS:000221558700015
引用统计	被引频次：37[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35606
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Wei,X. F. Sun,Q. Zheng,et al. Estimation of interdiffusivity of the NiAl Phase in Ni-Al binary system[J]. Acta Materialia,2004,52(9):2645-2651.
APA	H. Wei,X. F. Sun,Q. Zheng,H. R. Guan,&Z. Q. Hu.(2004).Estimation of interdiffusivity of the NiAl Phase in Ni-Al binary system.Acta Materialia,52(9),2645-2651.
MLA	H. Wei,et al."Estimation of interdiffusivity of the NiAl Phase in Ni-Al binary system".Acta Materialia 52.9(2004):2645-2651.