Neutron diffraction study of the new hexagonal Laves phase (Hf,Ti)(Ni,V)2 and its deuteride

被引：5
|
作者：
Rönnebro, E [1 ]
Noréus, D
Tsukahara, M
Sakai, T
机构：
[1] Stockholm Univ, Dept Struct Chem, S-10691 Stockholm, Sweden
[2] IMRA Mat R&D, Kariya, Aichi 448, Japan
[3] Osaka Natl Res Inst, Ikeda, Osaka 563, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 293卷
关键词：
Laves phase (Hf; Ti)(Ni; V)(2); deuterium positions; neutron diffraction;
D O I：
10.1016/S0925-8388(99)00392-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A new hexagonal C14 Laves phase hydrogen storage alloy and its deuteride has been studied with neutron diffraction. The new Laves phase precipitated as a second phase when a vanadium-based solid solution, TiV3Ni0.56, was alloyed with hafnium. From the structural refinements it was suggested that Hf is situated at the A site and Ni at the B sites. The Ti and V occupancy could not be ascertained, but from structural consideration of related alloys, supported by EDS analysis, we suggest that they occupy the A and B site, respectively. The deuterium atoms were located to mainly occupy one of the tetrahedral A(2)B(2) interstices, resulting in the formula unit (Hf,Ti)(Ni,V)(2) D-2. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：169 / 173
页数：5
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