Materials and Corrosion,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
ABSTRACT
Cr−O−N‐based
vacuum
arc
coatings
are
very
promising
for
the
wear
and
corrosion
protection
of
various
steel
parts.
The
aim
work
was
to
determine
effect
frequency
amplitude
pulsed
bias
voltage
(U
B
)
on
elemental
phase
composition,
mechanical,
properties
Cr−O−N
coatings.
They
have
an
amorphous
structure
with
embedded
nanosized
solid
solution
crystallites
based
CrN
a
cubic
Cr
2
O
3
rhombohedral
structure.
increase
in
results
reduction
grain
size
phases
by
about
four
times
5
nm,
as
well
change
content
coating.
lattice
parameter
increases
slightly
but
decreases
phase.
pulse
coating
constant
both
slight
decrease
crystallite
size.
hardness
increased
U
from
26
±
1
GPa
(DC)
28
(−300
V,
pulsed),
elastic
modulus
ranges
290
310
GPa.
greatest
changes
were
observed
resistance.
With
frequency,
current
3%
NaCl
decreased
three
orders
magnitude
compared
deposited
at
DC
five
base
steel.
Therefore,
use
least
10
kHz
700
V
can
significantly
resistance
substrates.
Frontiers in Materials,
Journal Year:
2024,
Volume and Issue:
11
Published: Sept. 6, 2024
Titanium
(Ti)
alloys
have
been
widely
used
in
biomedical
applications
due
to
their
superior
mechanical,
physical,
and
surface
properties,
while
improving
tribological
properties
is
critical
widening
the
current
era.
The
present
review
examines
recent
progress
made
enhancing
performance
of
titanium
matrix
composites
for
purposes.
It
specifically
focuses
on
coatings,
mechanical
treatment,
developing
terms
processing,
testing
conditions,
characterization.
Despite
thorough
investigations,
specific
procedures
evaluating
friction
wear
alloy
and/or
component
are
still
uncertain.
majority
researchers
selected
test
methods
parameters
based
previous
studies
or
own
knowledge,
but
there
a
scarcity
that
incorporate
limb-specific
tests
consider
distinct
kinematic
biological
structure
human
limbs.
Since
advanced
microscopy
has
great
potential
this
field,
variety
characterization
techniques
reveal
relationship
between
microstructural
properties.
Many
coating-based
strategies
developed
using
anodizing,
PEO,
VD,
PVD,
nitriding,
thermal
spray,
sol-gel,
laser
cladding,
however;
composition
processing
crucial
behaviour.
Reinforcing
type,
amount,
distribution
dominated
Ti
composite
research.
grade
2
Ti6Al4V
most
matrix,
various
reinforcements,
including
TiC,
Al
O
3
,
TiB,
hydroxyapatite,
Si
N
4
NbC,
ZrO
incorporated
enhance
matrix.
Mechanical
treatments
improve
alloys’
performance,
which
advantageous
ease
application.
implementation
machine
learning
methods,
such
as
artificial
neural
networks,
regression,
fuzzy
logic,
anticipated
make
substantial
contribution
field
ability
provide
cost-effective
accurate
results.
features
directly
affect
so
image
deep
can
help
optimize
these
optimal
performance.
Ti6Al4V
alloy
finds
extensive
use
in
aerospace,
automotive,
and
other
industries.
However,
its
surface
has
low
wear
resistance,
limiting
practical
applications.
This
study
developed
a
novel
Ti-6Al-4V-xCu
using
laser
powder
bed
fusion.
The
effects
of
Cu
content
on
the
microstructure,
microhardness,
friction
performance
alloys
were
systematically
examined.
findings
showed
that
Ti-6Al-4V-1.5Cu
Ti-6Al-4V-4.5Cu
have
microstructure
consisting
α´
phase
Cu-rich
β
phase.
While
Ti-6Al-4V-7.5Cu
includes
α´+Cu-rich
phase+nano
Ti2Cu.
results
demonstrated
increased
Ti-6Al-4V
significantly
improves
microhardness
tribological
due
to
solid
solution
strengthening,
grain
refinement,
precipitation
strengthening.
been
promising
candidate
for
industrial
