TY  - JOUR
AU  - Schulze-Küppers, Falk
AU  - Duburg, Jacobus C.
AU  - Deibert, Wendelin
AU  - Sohn, Yoo Jung
AU  - Guillon, Olivier
AU  - Sebold, Doris
AU  - Natour, Ghaleb
AU  - Meulenberg, Wilhelm Albert
TI  - Interaction between proton conducting BaCe0.2Zr0.7Y0.1O3 electrolyte and structural ceramics during sintering
JO  - Journal of the European Ceramic Society
VL  - 44
IS  - 5
SN  - 0955-2219
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2024-00792
SP  - 2762 - 2769
PY  - 2024
AB  - The chemical compatibility of thin electrolyte layers and their support materials at high temperatures is crucial for the performance in solid oxide cells and membranes. This work describes the chemical interaction between the electrolyte material, BaCe0.2Zr0.7Y0.1O3 + 0.5 wt% NiO (BCZY), and structural ceramics Al2O3, 8 mol% yttriastabilized zirconia (8YSZ), TiO2, CeO2 and MgO during sintering. 1:1 wt% powder mixtures of the electrolyte material and structural ceramics were annealed at 1500 ◦C for 5 h, with the phase composition being determined through XRD analysis at room temperature. Subsequently, the material interaction between BCZY films depositedon the most promising structural ceramic MgO was investigated by SEM and EDS. In particular, the complex sintering requirements to form single-phase BCZY electrolyte layers is troubled upon coating and sintering BCZY on MgO. Hereby, the diffusion of NiO into the MgO support leads to a deficiency of NiO in the BCZY layer,making the solution and precipitation mechanism required to form the perovskitic phase unable to occur. In extreme scenarios, the electrolyte layer depletion of NiO can even cause the decomposition of a single-phase BCZY into BaZrO3, Ce-Y fluorite and a BCZY perovskite phase of undefined composition.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001168406000001
DO  - DOI:10.1016/j.jeurceramsoc.2023.12.050
UR  - https://juser.fz-juelich.de/record/1021499
ER  -