TY  - THES
AU  - ZHOU, Wenyu
TI  - Mechanical properties of single and dual phase proton conducting membranes
VL  - 584
PB  - Univ. Twente
VL  - Dissertation
CY  - Jülich
M1  - FZJ-2022-03139
SN  - 978-3-95806-645-8
T2  - Schriften des Forschungszentrums Jülich Reihe Energie & Umwelt / Energy & Environment
SP  - IV, VI, 133
PY  - 2022
N1  - Dissertation, Univ. Twente, 2022
AB  - Dual-phase hydrogen permeation membranes, consisting of protonic and electronic conducting phases, shows great potential for high purity hydrogen production due to its high stability in harsh applications. Hydrogen-ion conductive perovskite phases (e.g. BaCe0.65Zr0.2Y0.15O3-δ) and electron conductive fluorite oxides (e.g. Ce0.85Gd0.15O2-δ)  are promising candidate for this biphasic hydrogen transport membrane. Mechanical properties (e.g. elastic modulus, hardness, fracture toughness) of the membranes are essential parameters regarding the reliability of subsequent applications. These parameters are closely related to microstructural features such as grain size, phase  distribution and defects (e.g. pores and microcracks). However, these relationships are not yet fully understood. Therefore, in this thesis, the effects of grain size, phasedistribution, pores and microcracks on mechanical properties are investigated for BaCe0.65Zr0.2Y0.15O3-δ and BaCe0.65Zr0.2Y0.15O3-δ-Ce0.85Gd0.15O2-δ membranes. Material preparation procedures (e.g. milling and sintering) are optimized to overcome the difficulty in material preparation.
LB  - PUB:(DE-HGF)3 ; PUB:(DE-HGF)11
UR  - https://juser.fz-juelich.de/record/909349
ER  -