Microstructures and hydrogen permeation characteristics of Nb-Ti-Ni alloys

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	Microstructures and hydrogen permeation characteristics of Nb-Ti-Ni alloys
	Xiong Liangyin; Liu Shi; Wang Longbao; Rong Lijian
刊名	ACTA METALLURGICA SINICA
	2008-07-01
卷号	44 期号:7 页码:781-785
关键词	Nb-Ti-Ni alloy hydrogen permeability hydrogen embrittlement
ISSN号	0412-1961
通讯作者	Liu Shi(sliu@imr.ac.cn)
英文摘要	Microstructures and hydrogen permeation properties of Nb50Ti25Ni25 and Nb40Ti30Ni30 alloys were investigated, and compared with those of Nb, Pd and Pd-Ag alloy. The results indicate that the microstructures of the two alloys consist of the primary bcc-Nb(Ti,Ni) solid solution and the eutectic of bcc-Nb(Ti,Ni)+B2-TiNi, and the volume fraction of the eutectic phase increases with additions of Ni and Ti. The hydrogen permeabilities of the two alloys at 673 K are 1.71x10(-8) and 1.03x10(-8) mol(.)m(-1.)s(-1.)Pa(-0.5), respectively, which are in the same magnitude level as that of pure Pd, but a little lower than that of Pd-Ag alloy. Increasing of eutectic phase favors resistance to hydrogen embrittlement, while the hydrogen permeability of the alloys increases evidently with increasing the primary phase. Alloys with high hydrogen permeability and good resistance to hydrogen embrittlement can be designed by optimization of Ni and Ti contents.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000258314600003
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/95209]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu Shi
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xiong Liangyin,Liu Shi,Wang Longbao,et al. Microstructures and hydrogen permeation characteristics of Nb-Ti-Ni alloys[J]. ACTA METALLURGICA SINICA,2008,44(7):781-785.
APA	Xiong Liangyin,Liu Shi,Wang Longbao,&Rong Lijian.(2008).Microstructures and hydrogen permeation characteristics of Nb-Ti-Ni alloys.ACTA METALLURGICA SINICA,44(7),781-785.
MLA	Xiong Liangyin,et al."Microstructures and hydrogen permeation characteristics of Nb-Ti-Ni alloys".ACTA METALLURGICA SINICA 44.7(2008):781-785.