COMPUTATIONAL PREDICTION OF COLD SPRAY NOZZLE PER-FORMANCE FOR THE DEPOSITION OF TITANIUM
Citation:
M.Meyer, R. Lupoi, COMPUTATIONAL PREDICTION OF COLD SPRAY NOZZLE PER-FORMANCE FOR THE DEPOSITION OF TITANIUM, 31st International Manufacturing Conference (IMC31), Cork (Ireland), 3rd of September, 2014, 107 - 112Download Item:
Lupoi, submitted.pdf (Published (author's copy) - Peer Reviewed) 376.6Kb
Abstract:
Cold spray is a novel technology for the application of coatings onto a variety of
substrate materials.
In this method
,
melting temperatures are not crossed and the
bonding is
realized by the acceleration of powder particles
through a carrier gas in
a converging
-
diverging
nozzle and their
high energy
impact
over a substrate
material
. The critical aspect of this technology is the acceleration process
and
the
multiphase
nature of
it
.
T
he
accurate
assessment of the
nozzle performance
w
ith
simulation techniques
is complex
. In order to demonstrate the limit
s of
current
numerical tools
, experiments with three
different
nozzle designs
were
conducted
under constant condition
s
.
The
D
eposition
E
fficiency
was measured and it was
shown
that it de
creas
es with the
cross
-
sectional throat area
of the nozzle
.
Computational results
based on
a
one
-
way coupled multiphase
approach
did
n
ot
concur
with
th
is
, while
more sophisticated modelling
techn
iques
with
two
-
way
couplings can
partia
lly
provide high
-
quality outcomes, in ag
reement with
experimental data.
Author's Homepage:
http://people.tcd.ie/lupoir
Author: LUPOI, ROCCO
Other Titles:
31st International Manufacturing Conference (IMC31)Type of material:
Conference PaperAvailability:
Full text availableKeywords:
Cold Spray, CFD, Multiphase Modelling, Coatings, TitaniumSubject (TCD):
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