High-entropy
alloys
(HEAs)
have
been
widely
used
and
concerned
in
recent
years
due
to
their
excellent
material
properties.
The
impurity
elements
can
exert
a
certain
impact
on
the
alloy
properties
even
at
lower
content.
In
this
study,
total
reflection
X-ray
fluorescence
(TXRF)
was
combined
with
suspension
sample
preparation
methods
measure
trace
three
common
high-entropy
powders.
high-Z
(Ca,
Mn)
low-Z
(Mg,
Al)
were
quantitatively
determined
by
internal
standard
method
calibration
curve
method,
respectively.
Then,
compared
detection
results
of
inductively
coupled
plasma-optical
emission
spectrometer
(ICP-OES),
showed
good
consistency.
Although
there
some
deviation
influence
physical
mechanisms
elements,
qualitative
analysis
quantitative
estimation
could
still
be
conducted.
It
is
proved
that
TXRF
an
effective
analytical
tool
for
alloys.
Moreover,
through
methods,
process
non-destructive,
fast,
low-cost,
less
demands.
Therefore,
suitable
rapid
element
production
Crystals,
Год журнала:
2024,
Номер
14(5), С. 451 - 451
Опубликована: Май 9, 2024
High-entropy
alloys
(HEAs)
are
advanced
materials
characterized
by
their
unique
and
complex
compositions.
Characterized
a
mixture
of
five
or
more
elements
in
roughly
equal
atomic
ratios,
these
diverge
from
traditional
alloy
formulations
that
typically
focus
on
one
two
principal
elements.
This
innovation
has
paved
the
way
for
subsequent
studies
have
expanded
our
understanding
HEAs,
highlighting
role
high
mixing
entropy
stabilizing
fewer
phases
than
expected
phase
prediction
methods
like
Gibbs’s
rule.
In
this
review
article,
we
trace
evolution
discussing
synthesis,
stability,
influence
crystallographic
structures
properties.
Additionally,
highlight
strength–ductility
trade-off
HEAs
explore
strategies
to
overcome
challenge.
Moreover,
examine
diverse
applications
extreme
conditions
promise
future
advancements
science.
Applied Sciences,
Год журнала:
2024,
Номер
14(17), С. 7576 - 7576
Опубликована: Авг. 27, 2024
High-Entropy
Alloys
(HEAs)
represent
a
transformative
class
of
materials
characterized
by
multiple
principal
elements
and
high
configurational
entropy.
This
review
article
provides
an
in-depth
examination
their
structural
particularities,
prediction
methodologies,
synthesis
techniques.
HEAs
exhibit
unique
stability
due
to
high-entropy
effects,
severe
lattice
distortions,
slow
diffusion
processes.
Predictive
models,
including
thermodynamic
kinetic
approaches,
are
essential
for
understanding
phase
stability.
Various
methods
impact
HEA
properties,
advanced
characterization
techniques
crucial
study.
The
highlights
current
applications
future
research
directions,
emphasizing
the
potential
in
diverse
technological
fields.
Corrosion
behaviors
of
AlCrFeTi
and
AlCrFeTiMo
multi-principal
elements
coatings
in
0.5
~
1
×
10-6
wt.
%
oxygen
containing
liquid
lead
bismuth
eutectic
(LBE)
was
investigated,
static
LBE
immersion
tests
were
conducted
at
500
°C,
550
°C
600
up
to
2000
h.
Both
had
experienced
phase
transformation
from
amorphous
BCC.
Bi-layered
oxide
scales
formed
on
coating
which
consist
outer
Fe/Cr
mixed
oxides
inner
Al/Ti
oxides,
the
interior
layer
strengthened
with
temperature
raising
features
confirmed.
The
addition
Mo
improved
system
stability
elevated
but
degraded
corrosion
resistance
coating.
Underlying
mechanism
discussed.
Lubricants,
Год журнала:
2025,
Номер
13(5), С. 210 - 210
Опубликована: Май 10, 2025
CoCrFeNiMn
high-entropy
alloy
(HEA)
composite
coatings
with
0,
10,
and
20
wt%
TiC
are
synthesized
through
laser
cladding
technology,
their
corrosion
wear
resistance
systematically
investigated.
The
X-ray
diffraction
(XRD)
results
show
that
the
addition
of
TiC,
phases
M23C6
introduced,
lattice
distortion
occurs
simultaneously
(accompanied
by
broadening
leftward
shift
main
Face-Centered
Cubic
(FCC)
peak).
Scanning
electron
microscopy
(SEM)
reveals
incompletely
melted
particles
in
coating
(S2)
uniformly
distributed
matrix
while
(S1)
10
due
to
gravitational
sedimentation
decomposition
during
processing,
distribution
reinforcing
phase
is
insufficient.
When
rubbed
against
Si3N4,
S2
exhibits
lowest
friction
coefficient
0.699
volume
0.0398
mm3.
more
prominent
simulated
seawater
(3.5
NaCl).
shows
best
resistance:
it
has
largest
self-corrosion
voltage
(−0.425
V
vs.
SCE),
current
density
(1.119
×
10−7
A/cm2),
stable
passivation
behavior
a
wide
region.
Electrochemical
impedance
spectroscopy
(EIS)
confirms
its
film
denser.
This
study
optimizes
microstructural
homogeneity
synergistically
enhances
mechanical
strengthening
electrochemical
stability
coating,
providing
new
strategy
for
making
HEA-based
layers
harsh
wear-corrosion
coupling
environments.
The
corrosion
mechanism
of
FeCoNiCrCu
high
entropy
alloy
(HEA)
coatings
produced
with
different
initial
powder
particle
sizes
in
3.5%
NaCl
is
systematically
investigated.
optimal
process
parameters
for
laser
cladding
were
obtained
through
orthogonal
tests,
resulting
excellent
quality.
As
the
size
increases,
less
energy
absorbed
by
particles,
more
difficult
it
to
form
fewer
defects.
current
density
increases
while
potential
decreases.
lower
charge
transfer
resistance
represents
worse
resistance.
Corrosion
predominantly
occurs
at
defects
on
surface
coating.
Coatings
finer
have
and
therefore
better
Compositional
analysis
passivating
film
coating
reveals
that
as
decreases,
total
content
Cu
oxide
decreases
Cr
stability
continuity
passivation
film,
which
contributes
improvement
coating's
Reducing
thus
significantly
improving
HEA
coatings.
