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@ARTICLE{Zhou:863289,
author = {Zhou, Dapeng and Mack, Daniel Emil and Gerald, Pintsuk and
Guillon, Olivier and Vaßen, Robert},
title = {{A}rchitecture designs for extending thermal cycling
lifetime of suspension plasma sprayed thermal barrier
coatings},
journal = {Ceramics international / Ci news},
volume = {45},
number = {15},
issn = {0272-8842},
address = {Faenza},
publisher = {Ceramurgia73399},
reportid = {FZJ-2019-03376},
pages = {18471-18479},
year = {2019},
abstract = {Suspension plasma spraying (SPS) as a relatively new
spraying technology has great potential on depositing high
performance thermal barrier coatings (TBCs). In some cases,
however, columnar SPS TBCs show premature failure in thermal
cycling test. To explain the reasons of such failure, a
failure mechanism for columnar SPS TBCs was proposed in this
work. The premature failure of TBCs might be related to the
radial stresses in the vicinity of top coat/bond coat
interface. These radial stresses were introduced by the
thermal misfit and the roughness of bond coat. According to
this mechanism, two architecture designs of SPS TBCs were
applied to improve the thermal cycling lifetime. One was a
double layered top coat design with a lamellar atmospheric
plasma sprayed (APS) sub-layer and a columnar SPS top-layer.
The other one was a low roughness bond coat design with a
columnar SPS top coat deposited on a low roughness bond coat
which was grinded before the spraying. With both designs,
lifetimes of SPS TBCs were significantly extended.
Especially, a lifetime even better than conventional APS
TBCs was achieved with the double layered design},
cin = {IEK-1 / JARA-ENERGY},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000483454200038},
doi = {10.1016/j.ceramint.2019.06.065},
url = {https://juser.fz-juelich.de/record/863289},
}