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@ARTICLE{Vorktter:906833,
author = {Vorkötter, Christoph and Mack, Daniel Emil and Zhou,
Dapeng and Guillon, Olivier and Vaßen, Robert},
title = {{E}ffect of {L}ow-{CTE} {O}xide-{D}ispersion-{S}trengthened
{B}ond {C}oats on {C}olumnar-{S}tructured {YSZ} {C}oatings},
journal = {Coatings},
volume = {12},
number = {3},
issn = {2079-6412},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2022-01727},
pages = {396 -},
year = {2022},
abstract = {Thermal barrier coatings (TBCs) are commonly used to
protect gas turbine components from high temperatures and
oxidation. Such coatings consist of ceramic top coats and
metallic bond coats. The mismatch in thermal expansion of
the top coat, the bond coat and the component material is
one main factor leading to the failure of the coating
system. Columnar-structured top coats offer an enhanced
tolerance to the strain during thermal cycling. On a flat
bond coated surface, these TBCs reach higher thermal cycling
performance. However, on rough surfaces, as used for thermal
spray coatings, the performance of these thermal barrier
coatings seems to be restricted or even stays below the
performance of atmospheric-plasma-sprayed (APS) thermal
barrier coatings. This low performance is linked to
out-of-plane stresses at the interface between the top coat
and the bond coat. In this study, a thin additional
oxide-dispersion-strengthened (ODS) bond coat with high
alumina content provides a reduced mismatch of the
coefficient of thermal expansion (CTE) between the top coat
and the bond coat. Columnar suspension plasma sprayed (SPS),
yttria-stabilized zirconia (YSZ) TBCs were combined with
low-CTE ODS bond coats. The behavior of these TBCs was
characterized with respect to thermal cycling performance
and degradation in a burner-rig facility. The comparison
showed an up-to-four-fold increase in the performance of the
new system.},
cin = {IEK-1 / JARA-ENERGY},
ddc = {660},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
pnm = {1241 - Gas turbines (POF4-124)},
pid = {G:(DE-HGF)POF4-1241},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000775643400001},
doi = {10.3390/coatings12030396},
url = {https://juser.fz-juelich.de/record/906833},
}