Formation of a tetragonal phase hydride in Ti-Mo-H system

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	Formation of a tetragonal phase hydride in Ti-Mo-H system
	E. D. Wu; X. Xu; X. Z. Yuan; X. M. Guo; S. C. Wang
	2008
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	458 期号:1-2 页码:161-165
摘要	The structural relationship between the hydride phases in Ti-Mo-H solid solution system (Mo content up to 15 at% in the alloy) during dehydrogenation process under annealing has been studied by conventional and in situ X-ray powder diffraction and transmission electron microscopy (TEM) analysis. During dehydrogenation, the saturated hydrides of the Ti-Mo alloys with fcc delta-phase structure transfer into bcc beta-phase at higher temperatures. An associated hydrogen concentration reduction for the delta-phase hydride is observed in the process. However, as the hydrogen concentrations decrease to certain values (H/M similar to 1.1-1.7), the unsaturated delta-phase formed at high temperature would become unstable at lower temperature, and transfer into a tetragonal phase (denoted the epsilon-phase here). Unlike that of the e-phase in Ti-H system, the phase transition does not occur for the saturated delta-phase with hydrogen concentration close to the stoichiometric limit. The hydrogen concentration of this epsilon-phase hydride is in between that of the tetragonal gamma and epsilon-phase in Ti-H system, but more close to the gamma-phase. The occurrence region of this epsilon-phase expands along with the increase of the Mo content in the alloys. The phase has a lattice similar to that of the e-phase in Ti-H system with corresponding fct unit-cell c/a < 1. (c) 2007 Published by Elsevier B.V.
部门归属	[wu, erdong; xu, xu; yuan, xuezhong; guo, xiumei; wang, sucheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;wu, ed (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;ewu@imr.ac.cn
关键词	Hydrogen Storage Materials Gas-solid Reactions X-ray Diffraction Titanium Hydride Zirconium Alloy Diffraction Deuteride Crystallography Transformation Property Neutron
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WOS记录号	WOS:000256641200030
引用统计	被引频次：10[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/321006/33199
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	E. D. Wu,X. Xu,X. Z. Yuan,et al. Formation of a tetragonal phase hydride in Ti-Mo-H system[J]. Journal of Alloys and Compounds,2008,458(1-2):161-165.
APA	E. D. Wu,X. Xu,X. Z. Yuan,X. M. Guo,&S. C. Wang.(2008).Formation of a tetragonal phase hydride in Ti-Mo-H system.Journal of Alloys and Compounds,458(1-2),161-165.
MLA	E. D. Wu,et al."Formation of a tetragonal phase hydride in Ti-Mo-H system".Journal of Alloys and Compounds 458.1-2(2008):161-165.