TY  - JOUR
AU  - Zeng, Fanlin
AU  - Malzbender, Jürgen
AU  - Baumann, Stefan
AU  - Schulze-Küppers, Falk
AU  - Krüger, Manja
AU  - Nijmeijer, Arian
AU  - Guillon, Olivier
AU  - Meulenberg, Wilhelm Albert
TI  - Micromechanical Characterization of Ce$_{0.8}$ Gd$_{0.2}$ O$_{2‐ δ–}$ FeCo$_{2}$ O$_{4}$ Dual Phase Oxygen Transport Membranes
JO  - Advanced engineering materials
VL  - 22
IS  - 6
SN  - 1527-2648
CY  - Frankfurt, M.
PB  - Deutsche Gesellschaft für Materialkunde
M1  - FZJ-2020-01377
SP  - 1901558 -
PY  - 2020
AB  - Aiming toward an optimization of dual phase oxygen transport membrane materials for oxygen separation applications, ceramic composites consisting of a Ce1−xGdxO2−δ (0 < x < 0.2) fluorite phase, Gd0.9Ce0.1Fe0.8Co0.2O3 perovskite phase, FexCo3−xO4 (0 < x < 1) spinel phase, and CoO rock salt phase are developed and micromechanical properties (elastic modulus and hardness) of xCe0.8Gd0.2O2−δ: (1−x)FeCo2O4 (50 wt% ≤ x ≤ 90 wt%) composites are characterized via indentation testing at room temperature. The results obtained at low indentation loads indicate that the magnitude of the elastic moduli of the different phases is in the order Gd0.9Ce0.1Fe0.8Co0.2O3 > Ce1−xGdxO2−δ ≈ FexCo3−xO4 > CoO, and furthermore, hardness values are also in the same order. The hardness values of the obtained composites at higher impression loads reveal a stronger dependency on porosity than on composition due to similar hardness values of the main phases. Any compositional effect appears to diminish above a porosity of ≈1%.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000517647600001
DO  - DOI:10.1002/adem.201901558
UR  - https://juser.fz-juelich.de/record/874344
ER  -