Hydrides of Laves phases intermetallic compounds synthesized under high hydrogen pressure
Journal
Solid State Ionics
Journal Volume
181
Journal Issue
5-7
Pages
306-310
Date Issued
2010
Author(s)
Filipek, Stanislaw M.
Paul-Boncour, Valerie
Kuriyama, Nobuhiro
Takeichi, Nobuhiko
Tanaka, Hideaki
Wierzbicki, Rafal
Sato, Ryutaro
Kuo, Hui-Tung
Abstract
High hydrogen pressure technique up to 1.2 GPa has been used for synthesis of novel hydrides in RFe2 Laves phases (R = Gd, Tb, Dy, and Ho) compounds as well as in pseudobinary ZrCo2 - xFex and YxDy1 - xMn2 Laves phases. Existence of new orthorhombic hydrides HoFe2H5, and DyFe2H5, isostructural with YFe2H5, was found, whereas GdFe2H5 and TbFe2H5 kept the cubic C15 lattice. Pseudobinary Zr(FexCo1 - x)2Dy (2 ≤ y ≤ 4) hydrides were synthesized and their stability was discussed as a function of Fe/Co content. It was revealed that the formation of non-interstitial YMn2H6-type Fm-3m hydrides is possible in the whole range of pseudobinary (YxDy1 - x)Mn2 compositions. © 2010 Elsevier B.V. All rights reserved.
Type
journal article