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@ARTICLE{Vorktter:859690,
author = {Vorkötter, C. and Mack, D. E. and Guillon, O. and Vaßen,
R.},
title = {{S}uperior cyclic life of thermal barrier coatings with
advanced bond coats on single-crystal superalloys},
journal = {Surface and coatings technology},
volume = {361},
issn = {0257-8972},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science84367},
reportid = {FZJ-2019-00529},
pages = {150 - 158},
year = {2019},
abstract = {Advanced thermal barrier coatings are essential to further
increase the efficiency of gas turbine engines. One limiting
factor of the TBC lifetime is the temperature dependent
formation of the thermally grown oxide (TGO) during thermal
exposure resulting in critical stress levels at the top
coat-bond coat interface. Oxide dispersion strengthened
(ODS) bond coats demonstrated slower oxygen scale growth
during thermal exposure in comparison to standard bond
coats.In this study for the first time TBC samples on
single-crystal substrates (comparable to CMSX4) with thin
ODS Co-based flash coats on the same Co-based bond coat
(Amdry 995) and a porous atmospherically plasma sprayed
(APS) yttria stabilized zirconia (YSZ) topcoat were
manufactured by thermal spray techniques and evaluated with
respect to their thermal cyclic behavior. As the major
performance test cyclic burner rigs, which can establish
thermal conditions similar to those in gas turbines, were
applied.TBC samples with the new material combination show
superior performance compared to previous samples. Cross
sections of the samples were analyzed by scanning electron
and laser scanning microscopy. Lifetime data and failure
mode of the samples are discussed with respect to material
properties such as thermal expansion coefficients,
microstructural changes and TGO growth.},
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:000459523600018},
doi = {10.1016/j.surfcoat.2019.01.001},
url = {https://juser.fz-juelich.de/record/859690},
}