Journal Article

FZJ-2021-01069

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png High temperature compressive creep behavior of BaCe 0.65 Zr 0.2 Y 0.15 O 3‐ δ in air and 4% H 2 /Ar

Zhou, W. (Corresponding author)FZJ* ; Malzbender, J.FZJ* ; Deibert, W.FZJ* ; Guillon, O.FZJ* ; Schwaiger, R.FZJ* ; Nijmeijer, A. ; Meulenberg, W. A.FZJ*

2021
Soc. Westerville, Ohio

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Please use a persistent id in citations: http://hdl.handle.net/2128/27591  doi:10.1111/jace.17715

Abstract: The proton conductive material BaCe0.65Zr0.2Y0.15O3−δ has great potential for the separation and purification of hydrogen. However, due to the demanding application conditions regarding both temperature and atmosphere, the elevated temperature structural stability needs to be characterized and warranted. Hence, in this research work, the elevated temperature compressive creep behavior of BaCe0.65Zr0.2Y0.15O3−δ in the temperature regime of 850°C to 1200°C was studied in both air and 4% H2/Ar as a function of the applied stress. The results indicate different creep mechanisms depending on atmosphere and temperature range. While dislocation creep was observed in 4% H2/Ar over the full range, a dislocation creep mechanism was observed in air at temperatures ≤1050°C and a diffusional creep mechanism at temperature ≥1100°C. A detailed microstructural analysis of the post‐creep test specimens revealed that the exposure to oxygen leads to localized stoichiometric changes and a decomposition at the surface.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Werkstoffstruktur und -eigenschaften (IEK-2)
3. JARA-ENERGY (JARA-ENERGY)

Research Program(s):

1. 123 - Chemische Energieträger (POF4-123) (POF4-123)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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