|
Now you can
manufacture customized alumina components quickly and at a fraction of
the cost.
Accumet’s
ready-to-press alumina powders are available as 96%,
99% and 99.7% pure Al2O3
.
These formulated
alumina powders can be formed into dense alumina ceramic components
via uniaxial or cold isostatic pressing and sintering. They are
completely homogeneous, guaranteeing constant physical and chemical
properties. Adding approximately 25% water to these powders will
produce a mixture which can be slip cast. Adding a suitable
plasticizer will produce an extrusion mix.
|
Chemical Analysis |
Accumet’s
AM 96 |
Accumet’s
AM 99 |
Accumet’s
AM 997 |
Measurement
by/according to |
|
Al 2 O3 |
96 % |
99 % |
99.7 % |
ICP/OES |
|
Na2 O |
0.3 % |
Max. 0.3 % |
0.1 % |
ICP/OES |
|
Physical Analysis |
|
|
|
|
|
Medium Grain Size
Diameter |
180-230 µm |
180 -230 µm |
160 - 200 |
DIN 68165 T2 |
|
Bulk Density |
1260-1350 g/l |
1150 – 1250 g/l |
1.15 -1.25
|
ISO 903 |
|
Moisture |
0.1 – 0.3 % |
0.2 – 0.6 % |
0.2 – 0.5 |
DIN EN ISO 787 T2 |
|
Loss on Ignition
1 |
Approx. 4.5% |
Approx. 3.0 % |
3.0 |
ISO 806 |
|
Processing Characteristics
2 |
|
|
|
|
|
Sinter
Temperature |
1650 ° C |
1630 ° C |
1600
° C |
|
|
Holding Time |
1 hour |
2 hours |
2 hours |
|
|
Sinter Interval
(dense ceramic
parts) |
1600 – 1700 ° C |
1600 – 1700 |
1550 -1700 |
|
|
Sinter Density |
3.7 – 3.75 g/cm
3 |
3.83 – 3.88 g/cm3 |
3.86 – 3.92 g/cm3 |
|
|
Isotropic Linear
Shrinkage
(referred to
green body) |
16.0 17.0 % |
16.5 – 17.5 % |
16.0 – 17.0 % |
|
1)
RT –maximum sinter
temperature
2)
Pressing
uniaxial or isostatic pressing strength: 100
– 300 N/mm3 |
