Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5454274 | Journal of Nuclear Materials | 2017 | 10 Pages |
Abstract
Deuteride phases in the zirconium-deuterium system in the temperature range 25-286 °C have been studied in-situ by high resolution neutron diffraction. The study primarily focused on observations of δâγ transformation at 180 °C, and the peritectoid reaction α + δ â γ at 255 °C in commercial 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 α-Zr, δ-ZrDx and ε-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 γ-hydride phase was observed both in-situ and ex-situ in deuterated Zr powder after a heat treatment at 286 °C and slow cooling.
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Authors
T. Maimaitiyili, A. Steuwer, C. Bjerkén, J. Blomqvist, M. Hoelzel, J.C. Ion, O. Zanellato,