Coatings,
Journal Year:
2024,
Volume and Issue:
14(12), P. 1572 - 1572
Published: Dec. 16, 2024
To
improve
lubricant
performance
and
extend
the
service
life
of
machinery,
friction
reduction
anti-wear
nano-cerium
oxide
(nano-CeO2)
nitrogen-containing
heterocyclic
borate
(BNH2)
composite
additives
were
studied
in
this
work,
with
goal
obtaining
better
lubrication
effects
than
a
single
additive.
The
results
showed
that
nano-CeO2
modified
Span80
had
good
dispersion
stability
base
oil.
optimal
addition
mass
fractions
BNH2
0.6
wt%
1.0
wt%,
respectively.
Compared
oil,
reduced
coefficient
by
44.9%
wear
spot
diameter
27.8%,
while
49.1%
32.8%.
additions
BNH2,
compound
nano-CeO2/BNH2
further
improved
lubricating
0.8
nano-CeO2/1.0
additive
55.9%
abrasive
48%.
Physicochemical
analysis
surface
revealed
combination
excellent
synergistic
effects.
generated
films
contained
chemical
reactive
layer
organic
nitride
(C–N),
Fe2O3,
FeO,
B2O3
physical
adsorbent
CeO2
provided
great
during
friction.
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(46), P. 24653 - 24661
Published: Nov. 4, 2024
Herein,
a
series
of
polylauryl
methacrylate-grafted
CDs
(CDs-PLMA-m,
m
denotes
the
reaction
time
in
hours)
with
core-shell
structure
were
synthesized
via
surface-initiated
atom-transfer
radical
polymerization
(SI-ATRP).
Due
to
good
solubility
PLMA
hydrocarbons,
all
CDs-PLMA-m
can
be
facilely
dispersed
polyalphaolefin
(PAO)
form
pellucid
colloidal
dispersions.
The
reciprocating
ball-on-plate
sliding
friction
tests
proved
that
addition
3.0
wt
%
CDs-PLMA-1
markedly
lessened
wear
and
PAO
by
53.0
40.0%,
respectively.
tribological
performances
(3.0
%)/PAO
dispersion
did
not
attenuate
sharply
when
duration
extended
from
20
200
min
or
applied
load
increased
100
N,
revealing
long
lifetime
desirable
load-carrying
effect
CDs-PLMA-1.
Based
on
tests,
antifriction
behavior
was
related
synergies
between
molecular
lubrication
PLMA-1
brushes
nanolubrication
CDs.
Furthermore,
analyses
disclosed
deposition
tribofilm
composed
lot
spot
iron
oxides,
which
provided
oxidation
resistance
an
antiwear
function.
This
study
established
reliable
route
synthesis
oil-soluble
polymer-grafted
CDs,
enabling
high-efficiency
PAO.
Coatings,
Journal Year:
2024,
Volume and Issue:
14(12), P. 1475 - 1475
Published: Nov. 21, 2024
In
the
field
of
industrial
lubrication,
solid–liquid
composite
lubrication
(SLCL)
techniques
based
on
diamond-like
carbon
(DLC)
coatings
and
lubricating
oils
are
emerging
recently,
which
may
be
applied
in
many
fields
near
future,
especially
automotive
industries.
The
tribological
behaviors
SLCL
systems
depend
strongly
compatibility
between
DLC
oils.
This
review
describes
advantages
by
pointing
out
synergistic
effects
Then
main
factors
determining
performance
discussed
detail.
Finally,
a
conclusion
about
characteristics
reported
is
made,
prospect
potential
development
technology
proposed.
On
basis
relevant
literature,
it
could
found
that
properties
were
influenced
more
compared
with
individual
or
oil
due
to
complicated
tribo-chemical
reactions
involving
during
friction.
And
under
some
optimized
working
conditions,
performances
(friction
wear
reduction)
superior
lubrication.
However,
needs
further
improved
(for
example,
achieve
superlubricity
ultra-low
simultaneously)
adjusting
structures
coatings,
regulating
compositions
oils,
most
importantly,
enhancing
physicochemical
synergies
provides
comprehensive
understanding
technology,
very
helpful
for
researchers
engineers
tribology.
Coatings,
Journal Year:
2024,
Volume and Issue:
14(12), P. 1572 - 1572
Published: Dec. 16, 2024
To
improve
lubricant
performance
and
extend
the
service
life
of
machinery,
friction
reduction
anti-wear
nano-cerium
oxide
(nano-CeO2)
nitrogen-containing
heterocyclic
borate
(BNH2)
composite
additives
were
studied
in
this
work,
with
goal
obtaining
better
lubrication
effects
than
a
single
additive.
The
results
showed
that
nano-CeO2
modified
Span80
had
good
dispersion
stability
base
oil.
optimal
addition
mass
fractions
BNH2
0.6
wt%
1.0
wt%,
respectively.
Compared
oil,
reduced
coefficient
by
44.9%
wear
spot
diameter
27.8%,
while
49.1%
32.8%.
additions
BNH2,
compound
nano-CeO2/BNH2
further
improved
lubricating
0.8
nano-CeO2/1.0
additive
55.9%
abrasive
48%.
Physicochemical
analysis
surface
revealed
combination
excellent
synergistic
effects.
generated
films
contained
chemical
reactive
layer
organic
nitride
(C–N),
Fe2O3,
FeO,
B2O3
physical
adsorbent
CeO2
provided
great
during
friction.
