Surfaces,
Journal Year:
2023,
Volume and Issue:
6(4), P. 364 - 379
Published: Oct. 10, 2023
Oxide
films
produced
from
plasma
electrolytic
oxidation
are
porous
in
structure.
While
they
have
some
passivating
effect
Mg
alloys,
the
pores
still
lead
to
corrosion
over
long
periods
of
exposure.
In
this
study,
spray
pyrolysis
was
used
seal
oxide
layer
developed
through
method
on
alloy
AZ31.
The
PEO
coating
acted
as
a
good
base
for
application
due
its
morphology.
Three
different
kinds
coatings
were
obtained
using
precursors:
zinc
acetate
ZnO,
phosphoric
acid
phosphate
(P),
and
mixture
sodium
ZnO+P.
performance
all
three
studied
by
performing
electrochemical
impedance
polarization
tests
samples.
Mass
loss
duration
1
week
measured
3%
NaCl
solution
immersion
gravimetry.
with
only
(P)
found
be
most
corrosion-resistant
52
times
lower
rate
50
more
potential.
chemical
composition
products
XRD
SEM-EDS
analysis.
ZnO+P
highest,
at
up
1.4
5.1
higher
than
ZnO
P,
respectively.
International Journal of Applied Ceramic Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 5, 2025
Abstract
Microarc
oxidation
technology
enhances
magnesium
alloy
surfaces
but
faces
cracks
and
micropores.
Adding
C
6
H
10
CaO
Ca(OH)
2
only
partially
solves
this.
This
study
used
immersion
pulling
to
create
a
microarc
oxidation/polycaprolactone
composite
film,
examining
its
properties
degradation.
The
film
transitioned
from
smooth
porous
with
calcium
phosphorus
deposits.
After
56
days,
the
Ca/P
ratio
approached
ideal
1.67,
matching
biological
environment.
polycaprolactone
layer
thinned
in
corrosive
media,
hydrogen
bubbles
detachment.
Surface
sediments
included
Ca
P
O
7
hydroxyapatite
(HA),
important
for
biocompatibility.
Cell
experiments
showed
superior
adhesion
proliferation
on
compared
controls.
A
degradation
model
revealed
film's
protective
role
during
three
stages.
In
summary,
exhibits
excellent
surface
morphology
composition,
promotes
cell
growth,
protects
substrate
Journal of Magnesium and Alloys,
Journal Year:
2023,
Volume and Issue:
12(10), P. 4174 - 4190
Published: Sept. 27, 2023
Magnesium
(Mg)
and
its
alloys
have
similar
densities
elastic
moduli
to
natural
bone,
making
them
an
excellent
choice
for
orthopedic
implants.
However,
Mg
are
prone
electrochemical
corrosion,
which
often
leads
implant
failure
hinders
the
further
development
of
due
bacterial
infection
around
implant.
This
work
aims
enhance
corrosion
resistance
alloys,
provide
theoretical
guidance
solving
problem
that
Mg-based
implants
susceptible
and,
thus,
failure.
In
order
solve
problem,
alloy
AZ91D
was
used
as
substrate,
a
compact
uniform
MgAlCu-layered
double
hydroxide
(Mg(Cu)-LDH)
prepared
on
surface
using
hydrothermal
method.
The
Mg(Cu)-LDH
provides
barrier
between
corrosive
liquid,
effectively
protects
substrate
from
being
corroded.
shows
great
cell
viability
MC3T3-E1
cells.
Cu2+
Mg2+
in
coating
also
endow
Mg(Cu)-LDH/AZ91D
with
antibacterial
properties,
showing
strong
effects
both
E.
coli
S.
aureus
rates
over
85%.
Finally,
vivo
results
indicated
LDH-coated
had
no
systemic
hearts,
livers,
spleens,
lungs
or
kidneys.
It
shown
4
weeks
after
surgery
ratio
bone
volume
tissue
(BV/TV)
LDH
24%,
1.7
times
observed
AZ91D.
Technology audit and production reserves,
Journal Year:
2024,
Volume and Issue:
2(3(76)), P. 20 - 26
Published: April 26, 2024
The
object
of
this
research
is
the
phosphate
serves,
as
a
fundamental
and
crucial
raw
material
with
diverse
applications,
primarily
utilized
in
producing
phosphoric
acid
fertilizers.
However,
dolomitic
impurities
within
ore
can
greatly
impede
its
effectiveness.
Therefore,
it
essential
to
minimize
these
lowest
feasible
levels
mitigate
their
adverse
effects.
This
ensures
optimal
performance
quality
various
industries
reliant
on
phosphate,
promoting
efficiency
sustainability
production
process.
Through
comprehensive
assessment,
becomes
gauge
enrichment
potential
propose
viable
methods
realize
it.
Among
methods,
flotation
stands
out
one
most
effective
for
enhancing
ore,
despite
inherent
drawbacks
costliness
environmental
impact
stemming
from
chemical
reagents.
study
endeavors
investigate
feasibility
employing
electrostatic
separation
an
alternative
method
enriching
sourced
Tebessa
region
Algeria.
Such
exploration
aims
offer
insights
into
potentially
more
sustainable
economically
approaches
Bir
Elater
Wilaya
Tebessa.
Tests
were
carried
using
different
types
separators
at
Angouleme
site
PPRIME
Institute:
multifunctional
metal-belt-type
separator,
free-fall
plate-electrodes-type
separator
coaxial
wire
–
cylinder
electrode
system.
experimental
findings
demonstrate
significant
promise,
indicating
that
enhanced
P2O5
content
25
%
29
untreated
sample.
Simultaneously,
efficiently
eliminated
82.80
MgO,
achieving
recovery
rate
than
80
yield
70
%.
Consequently,
proves
reducing
MgO
below
1
%,
aligning
industrial
standards
commercial
products.
underscores
viability
efficient
technique
processing,
offering
substantial
improvements
both
yield.
