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@INPROCEEDINGS{Mack:860421,
author = {Mack, Daniel Emil and Guillon, Olivier and Vassen, Robert},
title = {{B}ehavior of micro-scaled composite {TBC}s under corrosive
attack by {CMAS} deposits},
reportid = {FZJ-2019-01191},
year = {2018},
abstract = {Facing the demands on efficiency and operational
flexibility of gas turbines thermal barrier coatings (TBCs)
are being developed with considerable progress to allow
increased turbine inlet temperatures. Advanced ceramics were
identified in terms of the relevant materials properties as
e.g. high temperature phase stability, thermal conductivity,
thermal expansion, fracture toughness, etc. Based on this
data, typical approaches to improve TBC capabilities
comprise multi-layer coating designs where individual layers
of advanced materials are intended to contribute their
best-ranked functionality to withstand the harsh
environments.Since some years, in addition to the extreme
thermo-mechanical loads also degradation due to meltable
deposits from various sources has become a persistent
challenge in the hottest part of the gas turbines. The
corrosive attack from CaO-MgO-Al2O3-SiO2 related deposits
(CMAS) in most cases imposes major changes on microstructure
and chemistry of the outer coating layers which also affect
their thermo-mechanical properties. Recent results are
reviewed, where micro-scaled composites were effectively
able to counter-balance unfavourable effects from corrosive
degradation and provide superior performance compared to
single phase materials intended for CMAS mitigation.},
month = {Mar},
date = {2018-03-20},
organization = {European Conference on Nanofilms 2018,
Cranfield (UK), 20 Mar 2018 - 22 Mar
2018},
subtyp = {Plenary/Keynote},
cin = {IEK-1 / JARA-ENERGY},
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)6},
url = {https://juser.fz-juelich.de/record/860421},
}