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

被引：6

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

页码：169 / 173

页数：5

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