Research output per year
Research output per year
Fanlin Zeng*, Jürgen Malzbender, Stefan Baumann, Falk Schulze-Küppers, Manja Krüger, Arian Nijmeijer, Olivier Guillon, Wilhelm Albert Meulenberg
Research output: Contribution to journal › Article › Academic › peer-review
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%.
Original language | English |
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Article number | 1901558 |
Journal | Advanced engineering materials |
Volume | 22 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Jun 2020 |
Research output: Thesis › PhD Thesis - Research external, graduation UT