International Journal of Applied Ceramic Technology,
Journal Year:
2023,
Volume and Issue:
21(2), P. 1104 - 1118
Published: Oct. 25, 2023
Abstract
The
corrosion
resistance
and
mechanical
properties
directly
affects
the
operation
service
life
of
Al
2
O
3
‐Cr
refractories
used
in
waste
incinerators.
In
this
study,
ZrO
particles
were
introduced
via
vacuum
impregnation
to
adjust
microstructure
refractories.
results
showed
that
impregnated
increasing
times
resulted
decreased
median
pore
size
increased
compactness,
strengths
elevated
from
inhibited
cracks
propagation
by
particles.
amounts
large
pores
small
filled
penetration
low
melting
point
phases,
formed
CaZrO
phase
reactions
between
reagent
viscosity
penetrated
reagent,
resulting
index
8.57%
2.58%.
Meanwhile,
around
alumina
prevented
molten
alumina,
leading
3.78%
.74%.
formation
primary
factors
enhanced
resistance.
And
wrapped
layers
presented
prominent
effects
on
strengthened
Journal of Materials Research and Technology,
Journal Year:
2023,
Volume and Issue:
27, P. 3632 - 3643
Published: Oct. 18, 2023
The
corrosion
resistance
of
low-carbon
Al2O3–C
refractories
was
improved
by
a
novel
preparation
method
to
satisfy
the
requirements
newly
developed
smelting
process.
Improving
is
crucial
for
extending
service
life
industrial
furnaces
and
reducing
carbon
emissions.
In
this
study,
effects
graphite-like
h-BN
on
microstructure,
mechanical
properties
were
investigated.
results
shows
that
can
be
adding
h-BN.
This
due
fact
microstructure
material
regulated
form
Sialon
structure
folded
space.
Simultaneously,
enhanced
h-BN,
resulting
in
an
increase
up
70.3%.
According
phase
change
analysis,
introduction
beneficial
avoid
formation
decarbonized
layer
promote
continuous
precipitation
Al8B2O15,
spinel
anorthite.
promoted
densification
slag/refractories
interface,
thereby
hindering
slag.
Thermodynamic
simulations
verified
introducing
generation
high-melting-point
increased
absolute
content
each
reduced.
As
result,
exhibited
resistance.
