Hydrogenation of LaNi<sub>5</sub> studied by in situ synchrotron powder diffraction

Joubert, J.-M.; Cerny, Radovan; Latroche, M.; Percheron-Guégan, A.; Schmitt, Bernd

doi:10.1016/j.actamat.2005.09.036

Scientific article

English

Hydrogenation of LaNi₅ studied by in situ synchrotron powder diffraction

Contributors

Joubert, J.-M.; Cerny, Radovan; Latroche, M.; Percheron-Guégan, A.; Schmitt, Bernd

Published in

Acta materialia, vol. 54, no. 3, p. 713-719

Publication date

2006

Abstract

Hydrogen absorption in LaNi5 intermetallic compound has been studied by in situ synchrotron powder diffraction. Fast data acquisition allows the measurement to be performed under dynamical conditions, i.e., while the full reaction proceeds. The major finding of this study is evidence of a non-equilibrium transient γ phase never reported at room temperature without prior high-temperature cycling. Other findings are the variations of the extent of the line broadening and changes in the line shape during the absorption and desorption processes. They are explained by a reorganization of the hydrogen-induced dislocations in α and β phases.

Keywords

Line broadening
Synchrotron radiation
X-ray diffraction
Hydrides
Dislocation

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique de la matière quantique

UNIGE research groups

Groupe Cerny

Citation (ISO format)

JOUBERT, J.-M. et al. Hydrogenation of LaNi₅ studied by in situ synchrotron powder diffraction. In: Acta materialia, 2006, vol. 54, n° 3, p. 713–719. doi: 10.1016/j.actamat.2005.09.036

Article (Published version)

Identifiers

PID : unige:35494
DOI : 10.1016/j.actamat.2005.09.036

Additional URL for this publication

http://linkinghub.elsevier.com/retrieve/pii/S1359645405005951

Journal ISSN

1359-6454

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08/04/2014 14:11:00

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14/03/2023 21:06:19

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14/03/2023 21:06:19

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30/10/2024 16:46:43

Hydrogenation of LaNi₅ studied by in situ synchrotron powder diffraction

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

Main files (1)

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Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation

Hydrogenation of LaNi5 studied by in situ synchrotron powder diffraction

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

Main files (1)

Identifiers

Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation

Hydrogenation of LaNi₅ studied by in situ synchrotron powder diffraction