Ceramic Alumina Plate
Alumina ceramic plate
Specifications
99% alumina ceramic plate
1.Processed by hot-pressing
2.No pollution
3.Superior performan
Technical Data:
Name |
Unit |
Alumina |
Zirconia |
||
Content |
% |
≥95 |
≥99 |
≥99.7 |
≥94 |
Density |
g/cm3 |
3.65 |
3.80 |
3.90 |
6.00 |
Hardness (Hv0.5) |
GPa |
13.1 |
15.0 |
17.1 |
13.2 |
|
flexural strength
|
MPa≥ |
340 |
310 |
370 |
1000 |
Elasticity |
GPa |
300 |
330 |
350 |
200 |
|
Poisson's ratio
|
|
0.23 |
0.23 |
0.23 |
0.30 |
Max Tem. |
°C≥ |
1400 |
1750 |
1800 |
1050 |
Heat expansion |
×10-6/°C(40-800°C) |
7.8 |
8.0 |
8.0 |
11.0 |
|
Thermo conductivity
|
W/m·K( 20°C) |
22 |
28 |
31 |
2.6 |
Thermal Resistance |
°C |
200 |
200 |
230 |
300 |
|
dielectric strength
|
V/m |
15×106 |
15×106 |
15×106 |
11×106 |
|
dielectric phase angle (1MHz) |
×10-4 |
4 |
2 |
1 |
16 |
SIC(1MHz) |
|
9.2 |
9.8 |
9.9 |
33 |
|
Nitric Acid (60%)90°C |
WT Loss mg/cm2/day≤ |
0.12 |
0.10 |
0.05 |
≠0 |
|
Sodium hudroxide (30%)80°C |
WT Loss mg/cm2/day≤ |
0.53 |
0.26 |
0.04 |
0.08 |


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