Abstract
The
17
−
4
precipitation
hardening
(PH)
stainless
steel,
produced
by
additive
manufacturing
(AM),
provides
an
exceptional
balance
of
strength,
toughness,
and
corrosion
resistance,
making
it
a
versatile
engineering
alloy,
especially
in
the
aerospace
sector.
Nonetheless,
microstructural
defects
that
occur
during
adversely
affect
its
application
structural
contexts,
particularly
concerning
issues.
In
current
study,
novel
Alanine-derived
water-soluble
copolymer
referred
to
as
L-1
was
synthesized,
characterized
ability
suppress
SLM
printed
PH
steel
acidified
NaCl
solution
is
examined.
Electrochemical
surface
characterizations
computational
methods
were
systematically
utilized
explore
individual
inhibitors'
inhibitory
efficacy
synergistic
effects
their
blends
with
potassium
iodide
(KI).
Based
on
electrochemical
outcomes,
mixture
L-1/KI
(hybrid
inhibitor)
gave
impressive
rate
inhibition
efficiency
than
blank
ones.
An
index
synergism
greater
one
showcases
more
significant
potential
for
passivation
mitigating
progression.
adsorption
or
chelation
inhibitive
co-polymer
film
metal
examined
utilizing
X-ray
photoelectron
spectroscopy
(XPS),
FT-IR,
UV
vis
analyses.
examination
morphology
using
SEM
AFM
revealed
smooth
surface,
devoid
conspicuous
features
presence
co-polymer,
prominent
blend.
Quantum
chemical
(QC)
calculations
Mulliken
charge
analysis
indicate
active
centers
heightened
are
predominantly
located
benzene
rings
alanine
pendant
groups.
combined
experimental-theoretical
approach
highlights
effectiveness
hybrid
inhibitors
efficient
within
realm
sustainable
chemistry.
