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Rheological phenomena during capillary flow of hardmetal powder compacts
prepared
by mechanical
.
compacted
alloying
by spark-plasma
was
added
through
alloy
powder.
Densification
AlN
or NbN
pressed of
N
a
was added
grain growth. from
the
and hot
sintering.
N
was rapid.
There
sup-
was no loss
mechanically
alloyed
specimens.
Compositions
bide phase were determined contain
Fe-9.85%N and this
were described. (Ti,W)C
determined
and
WC
in amounts
by the TIC content.
ity of the Tic-WC-Co WC-Co.
of the carand found to The ductil-
was higher
A high-temperature
used. Coating
of cutting
TiN, Ti(C,N)
and/or Al,O,
than
process
was
tools with TIC, increased
ser-
vice life.
Production of nano-particles by vapour phase condensation N.Kishkoparov
et al. (Fine Metal Powders
Co., Ekaterinburg, A study
Russia.)
of kinetics
and mechanisms
nano-powder
production
condensation
was described.
of Cu, Sn and Cu-Sn
of
by evaporation/ Production
alloy powders
was
reported.
University, Tallinn, Estonia.) Strength
and
reliability
steel/Tic-cermets were
produced
process.
by a diffusion
Effects
size range of 50nm
to lOOnm, had been
bustion
by vacuum synthesis.
vapour-phase
com-
The process was report-
Tallinn, Estonia.)
Production
It was
reported
energy
ball
extruded
milling
had been used to synthesise
TiC
for
that
elemental
Ti
parameters
micron Tic
high and
C.
and
Effects
of formation
were investigated electron
grained Tic-NiMo
of
of sub-
by X-ray dif-
microscopy.
was to optimise
production
The of fine
cermets.
of
inverse
Al alloys were discussed.
and applications
Needs
high
alloys
extrusion
and
extrusion steel
pressures
dies
to
conditions
as well as sintered investigation bilised reported
T.Gestrich et al. (Fraunhofer
the product.
Ceramics/Sintered.
inst.
hardmetals,
WC-Co
was
occurring
were
desorption of lubricants,
reduction
transformation
of liquids,
Effect of carbon content and
ties, magnetic
density on rolling contact fatigue
mass transport
of a steel
characterised
of
Technology, Aachen, Germany.) It was reported fatigue
tester
that
contact
had been developed.
This
was used to test Distaloy
HPl,
ious core
to 7.lgm/cm-“,
%C,
processed
hardened
Rolling
contact
108 cycles
and
mine the S/N curve. a maximum to
The
Hertzian
pressure
specimens
with
to
levels
to deter-
Endurance
reached
at a core carbon
0.4%.
ground.
tests extended
at five stress
highest was
surfaces
lubricants,
content
of
endurable
reached rolled
and
to
with to near
H13
steel
in
quality
of
which the speof
optimise
L.G.Bodrova, G.M.Kramar. (Temopil State Ivan Pul’uj Technical University, Ukraine.) Applications tools
of TiC
and for heat
were discussed
cermets,
as cutting
and wear
resistance,
with reference
to proper-
ties. A wide range of properties cermets
was investigated
the effects 1000°C.
with
of Tic regard
of VC, at temperatures
Substitution
of TIC
to
up to
for WC-Co
was reported.
T.Honek et al. (Tomas Bata University
A.V.Laptev,
in
Zlin, Zlin, Czech Republic.) Rheology
of powder
was discussed
injection
with reference
ery and proper
mould
sideration
hardmetals.
models
of were
tested limited
to
size distributions to
55~01%
con-
rheological and polymer
applicability
complex
of the powders.
with
Published
against
40~01%
gies,
Only due
moulding to machin-
filling
V.A.Falkovsky
hardmetals
outperform
of die life and surface
carbide-nickel by high energy hot
particle
of the effects of adding 4, 8,
cer-
Solid-state consolidation of tungsten
A titanium carbide hardmetal for steel cutting et al.( GUPVNIITS,
and a special
The last of these was
Rheological phenomena during capillary flow of hardmetal powder compacts
binders.
Moscow, Russia.)
sta-
processing.
found
June 2003
were
and allow predictions
behaviour
Hard materials
to WC-8%Co
of Co and These
by various techniques
data for a range of carbides
12 or lbwt%TiC
melting
were shown to yield data about thermal
as
of oxide impuri-
full density.
Investigations
identified
with var-
finish
fatigue
discussed.
phenomena.
cific mechanisms
a rolling
An
ZrOL
Properties of titanium carbide cermets of
Microstructure property relationships
P,Beiss. (Aachen University
to
H13 but not
Mater., Dresden,
Germany.) Processes
J.Petersen,
were noted. conditions
with Mg, Si,N,
terms
some severe
oxides or carbides.
of
Process during heat treatment of
for
withstand
can meet these
tungsten carbide-cobalt compacts
Sintering
ed to have low cost.
and struc-
aluminium alloys
met was described.
prepared
factors,
of the insert material
A.Caso et al. (Bettini SPA., Lecco, Italy.)
China.) powder, of high
bonding
of metallurgical
Cermet dies for hot extrusion of hard
fraction
shape and a particle
WCThese
mechanical activation of powder
object
It was reported that Bi,O,
dual
reviewed.
constituents ].Pirso et al. (Tallinn Technical University,
powders
purity, near spherical
of
were
ture of the steel were discussed.
ZSheng et al. (Guangzhou Research Inst. for Non-Ferrous Metals, Guangzhou,
0.2
H.Klaasen et al. (Tallinn Technical
properties
process
case
by diffusion bonding
Synthesis of titanium carbide by
from
Production of nanometre bismuth oxide
Compound carbide composites produced
was
pressing L.Fochas. (Inst. for Problems
of Materials Ukraine.)
Science of UAS, Kiev,
WC-26wt%Ni
hot-pressed samples
triple
to
1250°C.
hot-pressed
1100°C.
urn-sintered
and morpholo-
Densities
above
of
were
powder
high-energy 90%
unstable
flow
consolidated
on
feedstock
99%
attained
by
at 1150°C,
but
at 1150°C
samples
and
determined.
were
density. Properties
liquid-phase
Mechanical were
hot pressing
vacuum sintering
It was shown that the onset of
and
was made with vacu-
specimens. properties
at
were
at lOOO”C, 1050°C
Comparison
physical
with
depends
Some
characteristics,
Experiments
were high energy
950°C
described. temperature.
powders
ball milled and high-energy
attained
only
of the solid-state exceeded
those
sintered materials.
metal-powder.net
of
by mechanical
.
compacted
alloying
by spark-plasma
was
added
through
alloy
powder.
Densification
AlN
or NbN
pressed of
N
a
was added
grain growth. from
the
and hot
sintering.
N
was rapid.
There
sup-
was no loss
mechanically
alloyed
specimens.
Compositions
bide phase were determined contain
Fe-9.85%N and this
were described. (Ti,W)C
determined
and
WC
in amounts
by the TIC content.
ity of the Tic-WC-Co WC-Co.
of the carand found to The ductil-
was higher
A high-temperature
used. Coating
of cutting
TiN, Ti(C,N)
and/or Al,O,
than
process
was
tools with TIC, increased
ser-
vice life.
Production of nano-particles by vapour phase condensation N.Kishkoparov
et al. (Fine Metal Powders
Co., Ekaterinburg, A study
Russia.)
of kinetics
and mechanisms
nano-powder
production
condensation
was described.
of Cu, Sn and Cu-Sn
of
by evaporation/ Production
alloy powders
was
reported.
University, Tallinn, Estonia.) Strength
and
reliability
steel/Tic-cermets were
produced
process.
by a diffusion
Effects
size range of 50nm
to lOOnm, had been
bustion
by vacuum synthesis.
vapour-phase
com-
The process was report-
Tallinn, Estonia.)
Production
It was
reported
energy
ball
extruded
milling
had been used to synthesise
TiC
for
that
elemental
Ti
parameters
micron Tic
high and
C.
and
Effects
of formation
were investigated electron
grained Tic-NiMo
of
of sub-
by X-ray dif-
microscopy.
was to optimise
production
The of fine
cermets.
of
inverse
Al alloys were discussed.
and applications
Needs
high
alloys
extrusion
and
extrusion steel
pressures
dies
to
conditions
as well as sintered investigation bilised reported
T.Gestrich et al. (Fraunhofer
the product.
Ceramics/Sintered.
inst.
hardmetals,
WC-Co
was
occurring
were
desorption of lubricants,
reduction
transformation
of liquids,
Effect of carbon content and
ties, magnetic
density on rolling contact fatigue
mass transport
of a steel
characterised
of
Technology, Aachen, Germany.) It was reported fatigue
tester
that
contact
had been developed.
This
was used to test Distaloy
HPl,
ious core
to 7.lgm/cm-“,
%C,
processed
hardened
Rolling
contact
108 cycles
and
mine the S/N curve. a maximum to
The
Hertzian
pressure
specimens
with
to
levels
to deter-
Endurance
reached
at a core carbon
0.4%.
ground.
tests extended
at five stress
highest was
surfaces
lubricants,
content
of
endurable
reached rolled
and
to
with to near
H13
steel
in
quality
of
which the speof
optimise
L.G.Bodrova, G.M.Kramar. (Temopil State Ivan Pul’uj Technical University, Ukraine.) Applications tools
of TiC
and for heat
were discussed
cermets,
as cutting
and wear
resistance,
with reference
to proper-
ties. A wide range of properties cermets
was investigated
the effects 1000°C.
with
of Tic regard
of VC, at temperatures
Substitution
of TIC
to
up to
for WC-Co
was reported.
T.Honek et al. (Tomas Bata University
A.V.Laptev,
in
Zlin, Zlin, Czech Republic.) Rheology
of powder
was discussed
injection
with reference
ery and proper
mould
sideration
hardmetals.
models
of were
tested limited
to
size distributions to
55~01%
con-
rheological and polymer
applicability
complex
of the powders.
with
Published
against
40~01%
gies,
Only due
moulding to machin-
filling
V.A.Falkovsky
hardmetals
outperform
of die life and surface
carbide-nickel by high energy hot
particle
of the effects of adding 4, 8,
cer-
Solid-state consolidation of tungsten
A titanium carbide hardmetal for steel cutting et al.( GUPVNIITS,
and a special
The last of these was
Rheological phenomena during capillary flow of hardmetal powder compacts
binders.
Moscow, Russia.)
sta-
processing.
found
June 2003
were
and allow predictions
behaviour
Hard materials
to WC-8%Co
of Co and These
by various techniques
data for a range of carbides
12 or lbwt%TiC
melting
were shown to yield data about thermal
as
of oxide impuri-
full density.
Investigations
identified
with var-
finish
fatigue
discussed.
phenomena.
cific mechanisms
a rolling
An
ZrOL
Properties of titanium carbide cermets of
Microstructure property relationships
P,Beiss. (Aachen University
to
H13 but not
Mater., Dresden,
Germany.) Processes
J.Petersen,
were noted. conditions
with Mg, Si,N,
terms
some severe
oxides or carbides.
of
Process during heat treatment of
for
withstand
can meet these
tungsten carbide-cobalt compacts
Sintering
ed to have low cost.
and struc-
aluminium alloys
met was described.
prepared
factors,
of the insert material
A.Caso et al. (Bettini SPA., Lecco, Italy.)
China.) powder, of high
bonding
of metallurgical
Cermet dies for hot extrusion of hard
fraction
shape and a particle
WCThese
mechanical activation of powder
object
It was reported that Bi,O,
dual
reviewed.
constituents ].Pirso et al. (Tallinn Technical University,
powders
purity, near spherical
of
were
ture of the steel were discussed.
ZSheng et al. (Guangzhou Research Inst. for Non-Ferrous Metals, Guangzhou,
0.2
H.Klaasen et al. (Tallinn Technical
properties
process
case
by diffusion bonding
Synthesis of titanium carbide by
from
Production of nanometre bismuth oxide
Compound carbide composites produced
was
pressing L.Fochas. (Inst. for Problems
of Materials Ukraine.)
Science of UAS, Kiev,
WC-26wt%Ni
hot-pressed samples
triple
to
1250°C.
hot-pressed
1100°C.
urn-sintered
and morpholo-
Densities
above
of
were
powder
high-energy 90%
unstable
flow
consolidated
on
feedstock
99%
attained
by
at 1150°C,
but
at 1150°C
samples
and
determined.
were
density. Properties
liquid-phase
Mechanical were
hot pressing
vacuum sintering
It was shown that the onset of
and
was made with vacu-
specimens. properties
at
were
at lOOO”C, 1050°C
Comparison
physical
with
depends
Some
characteristics,
Experiments
were high energy
950°C
described. temperature.
powders
ball milled and high-energy
attained
only
of the solid-state exceeded
those
sintered materials.
metal-powder.net
of