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@ARTICLE{Unocic:851205,
author = {Unocic, K. A. and Bergholz, J. and Huang, T. and Naumenko,
D. and Pint, B. A. and Vaßen, R. and Quadakkers, W. J.},
title = {{H}igh-temperature behavior of oxide dispersion
strengthening {C}o{N}i{C}r{A}l{Y}},
journal = {Materials at high temperatures},
volume = {35},
number = {1-3},
issn = {1878-6413},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2018-04905},
pages = {108 - 119},
year = {2018},
abstract = {To fabricate oxide dispersion strengthened bond coatings,
commercial $Co–30wt-\%Ni–20Cr–8Al–0•4Y$ powder was
milled with $2\%$ additions of Al2O3, Y2O3 or Y2O3 + HfO2.
Low-pressure plasma sprayed, free-standing specimens were
oxidised in air + $10\%H2O$ at 1100 °C both isothermally
(100 h) and in 500, 1−h cycles. Dry air cyclic testing
conducted at both ORNL and FZJ showed remarkably similar
results. In general, the water vapour addition caused more
scale spallation. Two LPPS specimens without oxide additions
were tested for comparison. The specimens with $2\%Al2O3$
addition exhibited the best behaviour as the powder already
contained $0•4\%Y.$ Additions of $2\%Y2O3$ and especially
$1\%Y2O3$ + $1\%HfO2$ resulted in over-doping as evidenced
by high mass gains and the formation of Y- and Hf-rich pegs.
Scanning transmission electron microscopy of the isothermal
specimens showed no Hf and/or Y segregation to the alumina
scale grain boundaries in the over-doped specimens.},
cin = {IEK-1 / IEK-2},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000435483900013},
doi = {10.1080/09603409.2017.1389423},
url = {https://juser.fz-juelich.de/record/851205},
}