The preparation of Zr-deuteride and phase stability studies of the Zr-D system

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The preparation of Zr-deuteride and phase stability studies of the Zr-D system

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Publication Article, peer reviewed scientific
Title The preparation of Zr-deuteride and phase stability studies of the Zr-D system
Author Maimaitiyili, Tuerdi ; Steuwer, A. ; Bjerkén, Christina ; Blomqvist, Jakob ; Hoelzel, M. ; Ion, John Christopher ; Zanellato, O.
Date 2017
English abstract
Deuteride phases in the zirconium-deuterium system in the temperature range 25-286 degrees C have been studied in-situ by high resolution neutron diffraction. The study primarily focused on observations of delta ->gamma transformation at 180 degrees C, and the peritectoid reaction alpha + delta <-> gamma at 255 degrees C in commetcial grade Zr powder that was deuterated to a deuterium/Zr ratio of one to one. A detailed description of the zirconium deuteride preparation route by high temperature gas loading is also described. The lattice parameters of alpha-Zr, delta-ZrDx and epsilon-ZrDx were determined by whole pattern crystal structure analysis, using Rietveld and Pawley refinements, and are in good agreement with values reported in the literature. The controversial gamma-hydride phase was observed both in-situ and ex-situ in deuterated Zr powder after a heat treatment at 286 degrees C and slow cooling. (C) 2017 Elsevier B.V. All rights reserved.
DOI https://doi.org/10.1016/j.jnucmat.2017.01.008 (link to publisher's fulltext.)
Publisher Elsevier
Host/Issue Journal of Nuclear Materials;
Volume 485
ISSN 0022-3115
Pages 243-252
Language eng (iso)
Subject Zirconium hydride
Phase transformation
Neutron diffraction
Hydrogen induced degradation
High temperature hydrogen loading
Deuterium
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/23539 Permalink to this page
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