Home > Workflow collections > Public records > Thermo-mechanical Properties of Mixed Ionic-Electronic Conducting Membranes for Gas Separation > print

001     283575
005     20240711092244.0
020 _ _ |a 978-3-95806-117-0
024 7 _ |2 Handle
|a 2128/10390
024 7 _ |2 ISSN
|a 1866-1793
037 _ _ |a FZJ-2016-01889
041 _ _ |a English
100 1 _ |0 P:(DE-Juel1)145779
|a Stournari, Vasiliki Kallirroi
|b 0
|e Corresponding author
|g male
|u fzj
245 _ _ |a Thermo-mechanical Properties of Mixed Ionic-Electronic Conducting Membranes for Gas Separation
|f - 2016-04-26
260 _ _ |a Jülich
|b Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
|c 2016
300 _ _ |a 167 S.
336 7 _ |0 PUB:(DE-HGF)3
|2 PUB:(DE-HGF)
|a Book
|m book
336 7 _ |0 PUB:(DE-HGF)11
|2 PUB:(DE-HGF)
|a Dissertation / PhD Thesis
|b phd
|m phd
|s 1461663342_18337
336 7 _ |0 2
|2 EndNote
|a Thesis
336 7 _ |2 DRIVER
|a doctoralThesis
336 7 _ |2 BibTeX
|a PHDTHESIS
336 7 _ |2 DataCite
|a Output Types/Dissertation
336 7 _ |2 ORCID
|a DISSERTATION
490 0 _ |a Schriften des Forschungszentrums Jülich Reihe Energie & Umwelt / Energy & Environment
|v 304
502 _ _ |a RWTH Aachen, Diss., 2015
|b Dr.
|c RWTH Aachen
|d 2015
520 _ _ |a In this work membrane materials with mixed ionic / electronic and protonic / electronic conductivity for oxygen (Oxygen Transport Membranes - OTM) and hydrogen separation (Hydrogen Transport Membranes - HTM) were investigated regarding the thermo-mechanical properties. In case of OTM, perovskite-type materials Ba$_{0.5}$Sr$_{0.5}$(Co$_{0.8}$Fe$_{0.2}$)$_{1-x}$Zr$_{x}$O$_{3-\delta}$ (BSCF·Z100x), where x = 0.01, 0.03, 0.05 and 0.1, as well as alternative SrTi$_{1-x}$Fe$_{x}$O$_{3-\delta}$ (ST·F100x) with x= 0.03, 0.05 and 0.07, while the fluorite structured La$_{5.4}$WO$_{12-\delta}$ (LWO54) and Nd$_{5.5}$WO$_{12-\delta}$ (NWO55) were investigated as HTM membrane materials. Compressive creep tests were carried out for all compounds in different temperature (900 – 1450 °C)and stress regimes (20 – 100 MPa) in air, vacuum and Ar / 4 % H$_{2}$ 2.5 % H$_{2}$O-atmosphere. The observed activation energies and stress exponents point to diffusional creep as the predominant creep mechanism. In case of BSCF-Z100·x ceramics, this was further supported by the fact that the grain-size-normalized steady-state creep ratevaries little for the different BSCF-Z100·x compositions. It was confirmed that Zr substitution does not significantly affect the thermal hysteresis of the creep behavior as observed for pure BSCF. Regarding ST∙F100x and LWO54 materials all materials maintained their main structure after the tests. Coming to the HTM materials, the creep mechanism for LWO54 was suggested to be cation aided diffusion with a common migration of La$^{3+}$ / W$^{6+}$ as rate controlling species along grain boundaries / through lattice. ST∙F100x, LWO54 and NWO55 materials are promising membrane materials regarding creep resistance. Elastic and fracture properties were determined for dense and porous tape casted LWO54. Young’s moduli via Vickers indentation, ring-on-ring and impulse excitation technique at room and elevated temperatures show a decrease by ~ 20 % when the material is heated up from room temperature to 1000 °C in air and Ar / 4 % H$_{2}$ atmosphere. Strength decreases by ~30 % when it is heated up to 1000 °C in air for dense materials while at room temperature it can be increased by a factor ~ 2 for homogeneous microstructure. Subsequent fractographic analysis reveals agglomerates of large irregular pores as fracture origins. For porous LWO54 the strength is decreasing with porosity and the presence of the secondary phase La$_{6}$W$_{2}$O$_{15}$. Micromechanical properties at room temperature by Vickers indentation test are also determined.
536 _ _ |0 G:(DE-HGF)POF3-899
|a 899 - ohne Topic (POF3-899)
|c POF3-899
|f POF III
|x 0
536 _ _ |0 G:(DE-Juel1)HITEC-20170406
|x 1
|c HITEC-20170406
|a HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)
650 _ 7 |x Diss.
856 4 _ |u https://juser.fz-juelich.de/record/283575/files/Energie_Umwelt_304.pdf
|y OpenAccess
856 4 _ |u https://juser.fz-juelich.de/record/283575/files/Energie_Umwelt_304.gif?subformat=icon
|x icon
|y OpenAccess
856 4 _ |u https://juser.fz-juelich.de/record/283575/files/Energie_Umwelt_304.jpg?subformat=icon-1440
|x icon-1440
|y OpenAccess
856 4 _ |u https://juser.fz-juelich.de/record/283575/files/Energie_Umwelt_304.jpg?subformat=icon-180
|x icon-180
|y OpenAccess
856 4 _ |u https://juser.fz-juelich.de/record/283575/files/Energie_Umwelt_304.jpg?subformat=icon-640
|x icon-640
|y OpenAccess
856 4 _ |u https://juser.fz-juelich.de/record/283575/files/Energie_Umwelt_304.pdf?subformat=pdfa
|x pdfa
|y OpenAccess
909 C O |o oai:juser.fz-juelich.de:283575
|p openaire
|p open_access
|p driver
|p VDB
|p dnbdelivery
910 1 _ |0 I:(DE-588b)5008462-8
|6 P:(DE-Juel1)145779
|a Forschungszentrum Jülich GmbH
|b 0
|k FZJ
913 1 _ |0 G:(DE-HGF)POF3-899
|1 G:(DE-HGF)POF3-890
|2 G:(DE-HGF)POF3-800
|a DE-HGF
|b Programmungebundene Forschung
|l ohne Programm
|v ohne Topic
|x 0
|4 G:(DE-HGF)POF
|3 G:(DE-HGF)POF3
914 1 _ |y 2016
915 _ _ |0 StatID:(DE-HGF)0510
|2 StatID
|a OpenAccess
915 _ _ |0 LIC:(DE-HGF)CCBY4
|2 HGFVOC
|a Creative Commons Attribution CC BY 4.0
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)IEK-2-20101013
|k IEK-2
|l Werkstoffstruktur und -eigenschaften
|x 0
980 1 _ |a UNRESTRICTED
980 1 _ |a FullTexts
980 _ _ |a phd
980 _ _ |a VDB
980 _ _ |a UNRESTRICTED
980 _ _ |a book
980 _ _ |a I:(DE-Juel1)IEK-2-20101013
981 _ _ |a I:(DE-Juel1)IMD-1-20101013

LibraryCollectionCLSMajorCLSMinorLanguageAuthor
Marc 21