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In situ observation of g-ZrH formation by X-ray diffraction

Article dans une revue avec comité de lecture
Author
MAIMAITIYILIT, Tuerdi
BJERKEN, Christina
STEUWER, Axel
32956 Science et Ingénierie des Matériaux et Procédés [SIMaP]
459835 Nelson Mandela University [Port Elizabeth]
WANG, Z
DANIELS, J
ANDRIEUX, Jérôme
2568 European Synchrotron Radiation Facility [ESRF]
BLOMQVIST, Jakob
ZANELLATO, Olivier
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/12465
DOI
10.1016/j.jallcom.2016.11.337
Date
2017
Journal
Journal of Alloys and Compounds

Abstract

We report on the measurement of the formation of γ-ZrH during in situ gaseous charging. The measurements were undertaken using high-energy synchrotron X-ray diffraction. Experimental observation shows that γ-ZrH can form at 180 °C from a mixture of α+δ while dehydrogenating at slow cooling rates. The observation is further supported by ex situ laboratory X-ray diffraction on deuterated Zr powder that has undergone a similar heat-treatment cycle. The crystal structure of γ-ZrH refinement agrees with the reported P42/n structure found in the literature.

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