Polymers,
Год журнала:
2024,
Номер
16(15), С. 2192 - 2192
Опубликована: Авг. 1, 2024
The
behavior
of
two
polymeric
protective
paint
coatings
(epoxy
and
polyurethane)
applied
over
an
epoxy
primer
coating
on
steel
plates
was
investigated
in
this
study,
focusing
their
role
providing
anticorrosive
protection
against
various
climatic
stress
factors.
Among
the
numerous
factors
that
can
affect
lifetime
coatings,
following
were
selected
for
work:
dry
heat,
UV
radiation,
humidity,
extreme
conditions
such
as
salt
fog,
marine
atmosphere,
alpine
atmosphere.
objective
to
determine
remaining
these
before
replacement
is
needed
prevent
damage
equipment
they
protect.
materials
under
mentioned
analyzed
based
variation
tangent
dielectric
loss
angle
(tg
δ)
with
frequency.
From
interpretation
experimental
results,
it
found
polyurethane
(P2)
exhibits
superior
resistance
degradation
compared
(P1).
Furthermore,
a
comparison
tg
δ
values
P1
P2
revealed
initial
(unaged)
performs
better
insulator
(dielectric)
than
coating.
Comprehensive
information
provided
users
materials,
highlighting
extent
which
performance
protect
determining
appropriate
timing
replacing
coatings.
Tribology International,
Год журнала:
2024,
Номер
200, С. 110143 - 110143
Опубликована: Авг. 23, 2024
Tribocorrosion
is
a
recent
paradigm
of
tribology
defined
as
the
combination
simultaneous
mechanical
and
chemical
wear
couplings.
To
date,
this
phenomenon
common
in
several
engineering
fields,
such
naval
sector
where
marine
equipment,
offshore
platforms
so
on
are
clear
examples.
In
regard,
synergy
between
effects
has
notable
effect
behavior
couplings
seawater
environment.
Nevertheless,
latter
can
act
also
antagonistic
factor.
Hence,
manuscript,
an
investigation
was
conducted
tribosystem
composed
alumina
sphere
stainless-steel
AISI
316
L
flat,
immersed
artificial
solution
3.8
%
NaCl
pH
8.2.
The
analysis,
carried
out
by
reciprocating
tribometer
equipped
with
two/three-electrode
potentiostat,
performed
for
different
loads
frequency
values,
their
correlation
synergistic
investigated.
open-circuit
potential,
friction
coefficient,
tribocorrosive
current
total
were
evaluated
tribological
conditions.
It
found
that
force
sliding
velocity
had
significant
position
response,
passing
from
positive
to
negative
mainly
due
protective
action
oxide
layer
lubrication
corrosion
products
formed
during
motion.
Moreover,
modeled
via
two
analytical
laws
discussed
literature,
providing
good
agreement
experimental
data.
Lastly,
provided
thickness
evolution
samples
surface
its
relationship
wear.
Coatings,
Год журнала:
2024,
Номер
14(12), С. 1487 - 1487
Опубликована: Ноя. 26, 2024
With
the
rapid
development
of
marine
engineering,
effective
antifouling
and
anti-corrosion
technologies
are
essential
for
ensuring
safety
longevity
facilities.
This
review
synthesizes
current
research
on
various
coating
designed
to
combat
biological
fouling
corrosion.
It
analyzes
causes
corrosion,
discusses
their
potential
impacts
ships
structures,
emphasizes
need
protective
systems.
The
covers
technologies,
including
preparation
low-surface-energy
coatings,
conductive
biomimetic
polysiloxane
polyurea
epoxy
polyurethane
high-entropy
alloy
coatings.
Anti-corrosion
coatings
also
discussed,
with
a
focus
characteristics
epoxy,
polyurethane,
as
well
metal-based
alongside
corrosion
resistance
in
environments.
Based
existing
research,
summarizes
ongoing
challenges
offers
perspectives
future
directions
technological
developments.
