Abstract
The
corrosion
inhibition
properties
and
mechanisms
of
quinoline
quaternary
ammonium
salt
(QA)
L-methionine
(LM)
on
pre-corroded
Q235
carbon
steel
in
1wt%
HCl
solution
were
studied
using
the
weight
loss
method
molecular
simulation
technology.
degree
pre-corrosion
will
affect
performance
inhibitor.
QA
LM
compete
to
adsorb
iron
surface
form
a
film,
repulsion
between
product
film
reduces
slow-release
performance.
Coatings,
Год журнала:
2025,
Номер
15(3), С. 352 - 352
Опубликована: Март 19, 2025
The
screening
of
environmentally
friendly,
efficient
and
high-temperature-resistant
organic
corrosion
inhibitors
represents
a
significant
means
reducing
metal
losses
in
industrial
production.
In
this
study,
we
investigated
using
aliphatic
amine-functionalized
perylene-diimide
(PDINN)
to
inhibit
Q235
steel
1
M
HCl
media.
results
show
that
PDINN
significantly
inhibits
HCl.
It
is
greater
significance
PDINN’s
inhibition
unresponsive
temperature
fluctuations
the
corrosive
environment,
maintaining
an
efficiency
86.5%
at
ambient
328
K.
DFT
MD
analyses
indicate
exceptional
inhibitory
capacity
closely
associated
with
extensive
conjugated
structure
within
molecule,
where
it
firmly
adsorbed
on
Fe
(110)
via
π-electrons.
