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Properties of Bulk Zirconium Hydrides

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The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Components

Part of the book series: Engineering Materials ((ENG.MAT.))

Abstract

This chapter provides details of the crystallography and mechanical (including fracture) properties of bulk zirconium hydrides. The chapter highlights a conclusion by Beck concerning the role of the γ-hydride phase as a suppository for excess hydrogen atoms when thermodynamic conditions drive the δ hydride phase to reduce its hydrogen composition. The values of the partial molar volumes of hydrogen in the γ- and δ-hydride phases are calculated and an analysis is given of the dependence of this volume in the δ-hydride phase on temperature over the temperature range of practical interest for nuclear reactors.

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Notes

  1. 1.

    It should be noted that Beck erred in describing the γ- and ε-hydride phases as having bct structures, which all other investigators have determined to have fct structures. However, this does not affect his arguments since Beck based his analysis on differences in the hydrogen composition in the transformation of the δ-hydride phase to an fct one having either positive or negative c/a.

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  1. MPP Consulting, 1242 Donlea Crescent, Oakville, Ontario, L6J 1V7, Canada

    Manfred P Puls

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© 2012 Springer-Verlag London

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Puls, M.P. (2012). Properties of Bulk Zirconium Hydrides. In: The Effect of Hydrogen and Hydrides on the Integrity of Zirconium Alloy Components. Engineering Materials. Springer, London. https://doi.org/10.1007/978-1-4471-4195-2_2

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  • DOI: https://doi.org/10.1007/978-1-4471-4195-2_2

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  • Publisher Name: Springer, London

  • Print ISBN: 978-1-4471-4194-5

  • Online ISBN: 978-1-4471-4195-2

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