Phase equilibria in the Mg-Ti-Ni system at 500 degrees C and hydrogenation properties of selected alloys

TitlePhase equilibria in the Mg-Ti-Ni system at 500 degrees C and hydrogenation properties of selected alloys
Publication TypeJournal Article
Year of Publication2013
AuthorsDenys RV, Zavaliy IY, Berezovets VV, Paul-Boncour V, Pecharsky VK
Journal TitleIntermetallics
Volume32
Pages167-175
Date Published01
Type of ArticleArticle
ISBN Number0966-9795
Accession NumberWOS:000313145500025
KeywordsABSORPTION, crystal-structure, hydrides, hydrogen storage, Intermetallics, miscellaneous, MAGNESIUM, Mechanical alloying and milling, mg2ni, nickel, sorption, storage alloys, Ternary, ternary alloy systems
Abstract

A number of ternary Mg-Ti-Ni alloys have been synthesized by high energy ball milling, followed by annealing heat treatment. On the basis of X-ray phase analysis of these alloys an isothermal section of the Mg-Ti-Ni phase diagram at 500 degrees C has been constructed. One ternary intermetallic compound with Mg3TiNi2 stoichiometry that adopts an ordered Ti2Ni-type structure has been identified. Binary cubic TiNi compound dissolves considerable amount of Mg to form a ternary phase MgxTi1-2/3xNi1-1/3x crystallizing in the CsCl-type structure and existing over the range of compositions 0 < x <= 0.5. Other binary phases do not show appreciable solubility of the third component. The hydrogenation behavior of Mg3TiNi2 compound and Mg0.5Ti0.67Ni0.83 solid solution phase has been studied. (C) 2012 Elsevier Ltd. All rights reserved.

URL<Go to ISI>://WOS:000313145500025
DOI10.1016/j.intermet.2012.09.010