Alumina substrate
Dense sintered alumina 96% and 99,7%
Characteristics
- Thickness: 0.15 - 0.25 - 0.38 - 0.5 - 0.63 - 0.76 - 1 - 1.27 - 1.52 - 2 mm
- Formats: 50.8 x 50.8 to 168 x 168 mm
Properties
- High corrosion resistance
- High abrasion resistance
- Good electrical isolation
- Very good gliding properties
- High planarity
- Good thermal conductivity
- Good mechanical strength
Porous sintered alumina 99%
Characteristics
- Thickness: 1 - 1.5 - 2 mm
- Formats: 100 x 100 to 168 x 168 mm
Properties
- High corrosion resistance
- High abrasion resistance
- Good electrical isolation
- Very good gliding properties
- Good mechanical strength
- Gases can diffuse by the material
- Weight of the individual plates is very light
Applications
The porous alumina substrates are often used as sintering base with the thermal treatment of LTCC, piezo-ceramics, SOFC-electrolytes, dental ceramics and metallic materials to 1500°C.
Technical data
|
Properties |
Al2O3 99 |
Al2O3 96 |
Al2O3 99 porosity 40% |
|
|
Alumina |
% |
99 |
96 |
99 |
|
Color |
/ |
White |
White |
White |
|
Gross density |
g/cm3 |
3,88 |
3,78 |
2,56 |
|
Surface roughness Rmax |
µm |
3 |
4 |
12 |
|
Surface roughness Ra |
µm |
0,2 |
0,5 |
0,7 |
|
Bending strength |
N/mm² |
500 |
400 |
~ 60 |
|
Thermal conductivity |
W/(K.m) |
25 |
24 |
/ |
|
Dielectric strength |
kV/mm |
> 10 |
> 10 |
/ |
|
Resistivity |
Ohm.µm |
10 14 |
10 12 |
/ |