Features of the HDDR process in ZrT2 (T = Cr, Mn, Fe, Co) compounds

The conditions for the realization of the hydrogenation–disproportionation–desorption–recombination (HDDR) process in intermetallic compounds (IMC) ZrT2 (T=Cr, Mn, Fe, Co) have been determined by means of differential thermal analysis (DTA) and X-ray phase analysis (XPhA). It was determined that aft...

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Bibliographic Details
Published in:Journal of alloys and compounds 2004-03, Vol.367 (1-2), p.283-288
Main Authors: Bulyk, I.I., Basaraba, Yu.B., Trostianchyn, A.M.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
HDDR
Laves phase
Materials science
Materials synthesis
materials processing
Methods of materials synthesis and materials processing
Physics
Transition metal
Zirconium hydride
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Summary:The conditions for the realization of the hydrogenation–disproportionation–desorption–recombination (HDDR) process in intermetallic compounds (IMC) ZrT2 (T=Cr, Mn, Fe, Co) have been determined by means of differential thermal analysis (DTA) and X-ray phase analysis (XPhA). It was determined that after HD, the C14 type Laves phase ZrCr2 decomposes into a zirconium hydride and chromium. After maintaining the highest heating recombination temperature for 3h, the disproportionation products are completely converted into a C15 type Laves phase. In the case of the ZrMn2 compound, a hydride of the initial phase was found. For the ZrFe2 and ZrCo2 compounds no changes were found after the treatment, but homogenization of the initial phase was observed.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2003.08.056