High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes,
Journal Year:
2023,
Volume and Issue:
28(2), P. 65 - 80
Published: Nov. 9, 2023
The
properties
of
Zr-ZrN,
Zr,Hf-(Zr,Hf)N
and
Zr,Nb-(Zr,Nb)N
coatings
deposited
on
a
Ti6Al-4V
titanium
alloy
substrate
were
studied.
It
has
been
established
that
the
introduction
hafnium
increases,
niobium
reduces
hardness
coating.
also
reduces,
value
critical
fracture
load
L<sub>C2</sub>
in
scratch
test.
layer
nanocrystallites
can
form
at
interface
between
This
is
presumably
formed
by
particles
an
oxide
film
destroyed
during
ion
etching,
spontaneously
surface
alloy.
All
samples
with
have
noticeably
lower
values
adhesive
component
friction
coefficient
f<sub>adh</sub>
compared
to
uncoated
sample
all
temperatures.
At
room
temperature,
Zr-ZrN-coated
best
value,
but
when
temperature
rises
500°C
above,
Zr,Hf-(Zr,Hf)N-coated
obvious
advantage.
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
28, P. 4382 - 4391
Published: Jan. 1, 2024
One
of
the
challenges
in
applications
instrumented
indentation
is
to
simultaneously
measure
elastic
modulus
and
Poisson's
ratio
homogeneous,
isotropic
materials.
This
work
proposes
empirical
equations
for
simultaneous
calculation
bulk
metallic
glasses
(BMGs)
from
short
diagonal
length
long
area
Knoop
imprint.
The
parameters
presented
are
determined
first
by
microhardness
tests
24
BMGs,
whose
moduli
ratios
measured
resonant
ultrasound
spectroscopy.
These
further
validated
other
3
which
yield
good
accordance
with
corresponding
ones
available
literature
results
nanoindentation
tests.
opens
a
new
venue
test
as
an
economical
efficient
method
both
BMGs.
Heliyon,
Journal Year:
2025,
Volume and Issue:
11(2), P. e41936 - e41936
Published: Jan. 1, 2025
Surfaces
loaded
with
microbes
can
contribute
to
the
propagation
of
a
wide
variety
pathogens.
In
this
work,
antimicrobial
potential
hard
coating
(CrN)
doped
different
proportions
biocide
element
(copper)
has
been
studied.
The
coatings
have
deposited
by
reactive
high
power
impulse
magnetron
sputtering
(HiPIMS)
technology,
on
stainless
steel
and
glass,
materials
used
profusely
in
human
traffic
environments.
microstructural
mechanical
properties
evaluated,
their
antiviral
(VSV-G)
antibacterial
(S.
Aureus)
activities,
durability
activity,
simulating
tribologically
two
years
standard
cleaning
processes.
It
found
that
adding
Cu
CrN
caused
some
reduction
hardness
Young's
modulus,
but
an
increase
adhesion.
effect
surface
wettability
depended
content,
which
for
low
values
(1.1
4.4
at.
%),
larger
(11.5
%
%).
All
all,
CrN-Cu
studied
showed
both
even
content
activity
actually
rose
when
surfaces
were
subjected
repeated
processes,
indication
robust
relevant
practical
Materials,
Journal Year:
2024,
Volume and Issue:
17(23), P. 5710 - 5710
Published: Nov. 22, 2024
The
aim
of
this
work
was
to
obtain
homogenous
coatings
containing
chitosan
with
different
concentrations
titanium
nitride
particles
(TiN).
were
deposited
via
an
electrophoretic
process
on
etched
medically
pure
Ti-6Al-4V
alloy.
As
part
the
study,
zeta
potential
suspensions
used
for
EPD
coating
deposition
measured,
allowing
optimization
parameters
and
assessment
suspension
stability.
Subsequently,
research
focused
evaluating
microstructure
(SEM
+
EDS),
structure
(XRD),
surface
characteristics
(roughness,
contact
angle,
energy,
microhardness,
adhesion)
layers.
SEM
microscopy
confirmed
effective
onto
alloy
surface.
XRD
analysis
proved
assumed
phase
composition
coating.
increase
in
TiN
content
individual
layers
confirmed.
chitosan/TiN
layer's
introduction
altered
surface,
increasing
its
roughness
static
water
angle.
highest
hydrophobic
properties
observed
a
2
wt.%
concentration
particles.
Additionally,
ceramic
(2
wt.%)
exhibited
hardness
(197
HV)
among
all
tested
However,
incorporation
layer
decreased
adhesion
strength,
from
2.36
MPa
(0.5
TiN)
1.04
TiN).
structural
demonstrate
as
protective
implants
are
suitable
further
biological
studies
assess
their
applicability
medical
veterinary
fields.
High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes,
Journal Year:
2024,
Volume and Issue:
28(3), P. 77 - 86
Published: Jan. 1, 2024
The
possibility
of
increasing
the
wear
resistance
titanium
alloy
parts
by
depositing
a
zirconium-niobium-nitrogen
[(Zr,Nb)N]
coating
with
an
adhesive
Zr,Nb
sublayer
on
their
surfaces
was
investigated.
Given
that
Vickers
hardness
this
is
HV
=
2336
±
115,
and
value
critical
fracture
load
during
scratch
test
L<sub>C2</sub>
14
N,
which
noticeably
lower
compared
to
nitride
coatings
deposited
carbide
or
ceramic
substrate,
(Zr,Nb)N
provides
noticeable
increase
in
resistance.
rate
uncoated
sample
2.5
times
higher
(Zr,Nb)
N-coated
sample.
Coating
deposition
allows
simultaneously
reducing
friction
coefficient
(from
0.45
for
0.33
coated
sample)
Coatings,
Journal Year:
2024,
Volume and Issue:
14(7), P. 782 - 782
Published: June 21, 2024
In
order
to
enhance
the
surface
properties
of
GCr15
bearing
steel,
a
TiAlCN
coating
with
low
friction
coefficient,
high
hardness,
and
excellent
adhesion
was
fabricated.
The
multilayer
deposited
onto
steel
using
magnetron
sputtering
technology,
optimal
parameters
were
achieved
by
adjusting
number
layers,
power
graphite
target,
duration.
experimental
results
showed
that
adding
Cr/CrN
as
transition
layer
between
significantly
improved
multiple
coating.
Adding
carbon
atoms
caused
TiAlN
dissolve
into
structure,
enhancing
With
increase
in
target
material,
friction,
wear
performance
trend
first
increasing
then
decreasing.
hardness
gradually
increased
time,
coefficient
amount
decreased
increased.
When
material
100
W
time
4800
s,
optimal.
876
HV,
0.42,
1
×
10−4
g,
rate
2.8
10−6
g/m·N
under
process
parameter
conditions.
