期刊
SCRIPTA MATERIALIA
卷 64, 期 10, 页码 978-981出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.02.004
关键词
Palladium; Hydrogen; Thin films; Phase transformations; Coherency
类别
资金
- DFG [PU131/7-2, PU131/9-1]
- Ministry of Education of Czech Republic [MSM0021620834]
- DAAD [D0804229]
The thermodynamics of structural phase transformations in thin films depends on the mechanical stress that can be released by plastic deformation. For thin films below a critical film thickness, plastic deformation is energetically unfavourable: thus, the system stays coherent and stress remains. For PdHc films less than 22 nm thick, a new situation emerges: while the interfaces between matrix and hydride precipitates remain coherent throughout the complete phase transition, misfit dislocations form between the hydride phase and the substrate. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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