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

JOURNAL OF ALLOYS AND COMPOUNDS

卷:695

Article

Maimaitiyili, T.¹  Bjerken, C.¹  Steuwer, A.²  Wang, Z.^3,4  Daniels, J.³  Andrieux, J.⁵  Blomqvist, J.¹  Zanellato, O.⁶ 

[1] Malmo Univ, Mat Sci & Appl Math, Nordenskioldsgatan 1, S-20506 Malmo, Sweden

[2] Nelson Mandela Metropolitan Univ, Gardham Ave, ZA-6031 Port Elizabeth, South Africa

[3] UNSW Australia, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[4] Australian Synchrotron, 800 Blackburn Rd, Clayton, Vic 3168, Australia

[5] European Synchrotron Radiat Facil, 6 Rue J Horowitz, F-38043 Grenoble, France

[6] ENSAM CNAM CNRS, PIMM, 151 Blvd Hop, F-75013 Paris, France

关键词: Zirconium hydride;    gamma-ZrH;    Synchrotron X-ray diffraction;    Hydrogen charging;   

DOI  :  10.1016/j.jallcom.2016.11.337

来源: Elsevier

【 摘 要 】

We report on the measurement of the formation of gamma-ZrH during in situ gaseous charging. The measurements were undertaken using high-energy synchrotron X-ray diffraction. Experimental observation shows that gamma-ZrH can form at 180 degrees C from a mixture of alpha+delta 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 gamma-ZrH refinement agrees with the reported P4(2)/n structure found in the literature. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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