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@INPROCEEDINGS{Wolff:996700,
author = {Wolff, Michael and Menzler, Norbert H.},
othercontributors = {Treitz, Jan-Philipp and Lenser, Christian},
title = {{W}et powder spraying derived spinel protective coatings
for solid oxide cell interconnects},
reportid = {FZJ-2023-01129},
year = {2023},
abstract = {Cr diffusion and Cr2O3 scale formation are widely regarded
as one major degradation issue for Cr-containing steel
interconnects in solid oxide cells (SOC). Although the
application of (Mn,Co)3O4 spinel by atmospheric plasma
spraying (APS) has proven as an effective method to improve
Cr retention, high processing costs still limit the
potential of this approach. In this study, we evaluated wet
powder spraying as a fast, scalable and cost-effective
alternative to apply protective coatings of
Mn1.0Co1.9Fe0.104 (MCF) on Crofer 22H. Deposition of
homogeneous coatings have been shown to depend on a complex
interplay of surface pre-treatment, slurry composition, wet
powder spray process parameters and post-sintering
conditions. Defect-free MCF layers with high adhesion
strength have been successfully applied by gradual
fine-tuning of deposition and sintering parameters.
According to microstructural analysis, protective layers
remained stable mechanically and chemically with improved Cr
retention after thermal treatment for 1000 h at 800 °C.
Overall, wet powder spraying shows great potential as a
highly efficient and economically viable technique for the
application of gas-tight ceramic protective layers in the
micrometer range.},
month = {Jan},
date = {2023-01-22},
organization = {47th International Conference and Expo
on Advanced Ceramics and Composites,
Daytona Beach (USA), 22 Jan 2023 - 27
Jan 2023},
subtyp = {After Call},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123) /
Verbundvorhaben $SOC-Degradation_2$ ' Teilvorhaben A
(03SF0621A) / SOFC - Solid Oxide Fuel Cell (SOFC-20140602)},
pid = {G:(DE-HGF)POF4-1231 / G:(BMBF)03SF0621A /
G:(DE-Juel1)SOFC-20140602},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/996700},
}