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@ARTICLE{Bakan:858379,
author = {Bakan, Emine and Mauer, Georg and Sohn, Yoo Jung and
Schwedt, Alexander and Rackel, Marcus Willi and Riedlberger,
Florian and Pyczak, Florian and Peters, Jan Oke and
Mecklenburg, Matthias and Gartner, Thomas Maria and Vaßen,
Robert},
title = {{C}old gas spraying of {T}i-48{A}l-2{C}r-2{N}b
intermetallic for jet engine applications},
journal = {Surface and coatings technology},
volume = {371},
issn = {0257-8972},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science84367},
reportid = {FZJ-2018-07265},
pages = {203-210},
year = {2019},
abstract = {The present article describes aspects of the cold gas spray
processability of the intermetallic Ti-48Al-2Cr-2Nb (at.
$\%)$ alloy, which is employed as a structural material in
gas turbine engines. The effects of processing parameters,
namely, gas pressure, gas temperature, spray distance, as
well as the gas atomized feedstock particle size
(d50 = 30 and 42 μm, respectively) and phase
composition on deposition, were investigated. The results
showed that when the highest available gas pressure
(40 bar) and temperature (950 °C) were combined with a
short spray distance (20 mm), well-adhering coatings could
be deposited regardless of the investigated particle size.
However, the maximum coating thickness could be achieved was
about 30 μm with a deposition efficiency of $1\%.$ Phase
composition of the gas atomized feedstock was investigated
with HT-XRD and according to the findings, heat treatment of
the feedstock under vacuum was carried out. With this
treatment, non-equilibrium, disordered α phase of the
atomized powder was transformed into an α, α2 and γ phase
mixture. At the same time, an increase in the hardness and
oxygen content of the powder was detected. Swipe test
performed with the heat treated powder revealed no
improvement in terms of deposition, in fact, the number of
adhering particles on the substrate was decreased in
comparison with that of the untreated powder.},
cin = {IEK-1},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000472694300022},
doi = {10.1016/j.surfcoat.2018.11.092},
url = {https://juser.fz-juelich.de/record/858379},
}