Engineering Research Express,
Journal Year:
2024,
Volume and Issue:
6(3), P. 035420 - 035420
Published: Aug. 6, 2024
Abstract
The
present
work
evaluates
the
influence
of
surface
modification
on
bio-functionalities
Ti-6Al-7Nb
alloy
in
terms
apatite
formation,
metal
ion
release
rate
and
anti-bacterial
activities.
form
change
integrity,
increases
exposed
area,
has
been
achieved
using
wire-electrical
discharge
machining
(WEDM)
electrical
μ-drilling(EDD).
Due
to
high
energies,
molten
material
will
deposit
parent
(recast
layer),
which
roughness
(parent
0.5
μm
2.34
μm)
hardness
(patent
304VH
385VH)
after
subsequent
re-solidification
quenching.
Surface
near
micro-drilled
hole
are
observed
increase.
After
modification,
formation
is
increased
with
increasing
immersion
time
released
was
found
lowest
WEDMed
as
compared
micro
drilled
polished
surface.
Field-emission
electron
scanning
microscopy
(FESEM)
energy
dispersive
x-ray
spectroscopy
(EDAX)
observations
confirmed
presence
phosphate
calcium
ions
nearby
variation
colour
simulated
body
fluid
(SBF)
WEDMed,
EDD,
samples
indicates
variable
effecton
pH
levels
SBF
solution
for
three
types
samples.The
bioactivity
be
better
surfaces,
due
a
rutile-TiO
2
layer
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
31, P. 1282 - 1303
Published: June 22, 2024
The
study
demonstrated
the
Ca,
P,
and
Zn-doped
ZrO2/TiO2
coating
layer
via
plasma
electrolytic
oxidation
(PEO)
radiofrequency
magnetron
sputtering
(RF-MS)
for
improving
surface
characteristics
biocompatibility
of
Ti-6Al-4V
alloy.
process
involved
sandblasting
(SB)
to
create
micro-scale
irregularities
on
alloy
surface,
followed
by
RF-MS
PEO.
coating's
morphology,
elemental
composition,
phase
chemical
analysis
were
examined
FE-SEM
with
energy-dispersive
spectroscopy,
X-ray
diffraction,
photoelectron
Raman
analysis.
dual
treatment
resulted
in
formation
composite
coatings
TiO2,
ZnO,
ZrO2,
HA
presence
displayed
anisotropic
multi-scale
porous
morphology
while
texturing
created
SB
facilitated
mechanical
interlocking
during
oxide
growth.
In
SB-Zr+PEO-Zn
sample,
indicated
strain-induced
stabilization
t-ZrO2
PEO
due
incorporation
Ca2+
ions,
zinc-substituted
hydroxyapatite
was
observed
that
showed
enhanced
roughness
wettability.
Also,
reduced
hardness
elastic
modulus
(comparable
cortical
bone)
transformation
toughening
under
stress
from
m-ZrO2.
within
coating,
all
act
as
protective
barriers
effectively
reducing
corrosion
rates.
biological
better
biocompatibility,
including
promoting
cell
proliferation,
adhesion,
osteoblast
differentiation,
ALP
activity,
mRNA
expression
several
osteogenic
markers
cells
cultured
sample.
These
results
higher
potential
system
osseointegration
ability
dental
implants.
Journal of Magnesium and Alloys,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 1, 2024
In-situ
growth
of
layered
double
hydroxide
(LDH)
has
been
considered
a
feasible
method
to
further
improve
the
corrosion
protection
PEO
coated
Mg
alloys,
but
process
is
basically
carried
out
in
an
autoclave.
In
this
study,
LDH
was
in-situ
synthesized
on
treated
AM50
by
hydrothermal
treatment
at
ambient
pressure
presence
chelating
agents.
Results
indicated
that
synergistic
effect
sulfosalicylic
acid
(SSA)
and
ethylenediaminetetraacetic
tetrasodium
salt
(EDTA)
agents
appropriate
for
Mg-Al
formation
due
sufficient
quantity
highly
stable
Al
complexes
bath.
An
time
also
revealed
work,
which
can
efficiently
seal
pores
defects
coating
with
uniform
film.
As
result,
improved
dramatically.
The
prolonged
detrimental
integrity
layers.
influence
processes
supported
thermodynamic
calculation
equilibrium
composition,
mechanism
film
discussed
depth.
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
30, P. 2365 - 2376
Published: April 3, 2024
This
study
demonstrates
that
the
optimisation
of
electrical
processing
parameters
during
plasma
electrolytic
oxidation
allows
single-step
incorporation
nanoparticles
with
complex
3D
structures
into
outer
porous
structure
growing
PEO
coating.
In
particular,
this
work
evaluates
zeolite
particle
uptake
mechanism
soft
sparking
regime.
Four
aluminate-based
electrolytes
different
concentrations
(0–10
g
l−1)
were
studied.
The
encapsulation
Ce
within
(Ce-zeolite)
was
evaluated
by
FTIR,
SEM/EDS,
XRD
and
TGA.
successful
in
coatings
confirmed
SEM-EDS
FIB/TEM.
Zeolite
Ce-loaded
incorporated
non-reactively
adsorption
entrapment
molten
oxide
coating
growth
at
surface
coatings.
Reactive
also
identified
inner
layers
as
a
result
field
assisted
migration
through
flaws
defects,
leading
to
their
thermal
decomposition.
corrosion
behaviour
improved
noticeably
upon
addition
nanoparticles,
whereas
inclusion
cerium
led
an
incremental
improvement
performance.
Deleted Journal,
Journal Year:
2025,
Volume and Issue:
2, P. 5 - 5
Published: Jan. 15, 2025
A
significant
amount
of
carbon
dioxide
is
released
into
the
atmosphere
as
a
result
extensive
usage
fossil
fuels.
The
photocatalytic
reduction
and
conversion
CO2
under
visible
light
alternative
renewable
solar
fuels
or
other
oxygenated
products
(methane,
formaldehyde,
methanol,
formic
acid)
are
practical
efficient
methods
for
reducing
atmospheric
pollution.
Functional
materials
containing
titanium
(TiO2)
have
attracted
interest
CO2.
In
this
direction,
many
studies
been
conducted
in
recent
years,
especially
on
energy
harvesting
charge
separation,
adsorption,
activation,
enhanced
TiO2.
Recent
shown
that
brookite
TiO2
(BT)
was
most
active
photocatalyst,
followed
by
rutile
anatase.
Therefore,
study
aims
to
review
detail
advances
development
selective
catalysts
using
with
structure.
This
evaluates
common
obtaining
BT.
It
discusses
various
engineered
strategies,
including
doping
metallic
non-metallic
heteroatoms,
addition
co-catalyst,
formation
heterojunctions,
algorithms
improve
mechanism.
influence
another
phase
crystal
facets
reaction
discussed
detail.
problems
associated
BT-based
photocatalysts,
namely,
their
modest
visible-light
absorption,
slow
interfacial
poor
surface
catalytic
dynamics,
further
discussed,
along
possible
solutions.
To
stimulate
additional
research
field,
difficulties
potential
advantages
discussed.
