Sintered ceramic Zirconia ZrO2
Final Advanced Materials provides high temperature Zirconia ZrO2 sintered ceramics. We can provide rods, plates or machine parts according to your drawings.
Sintered ceramic presentation
Zirconia (ZrO2) has very specific characteristics :
- High fracture toughness
- Thermal expansion similar to cast iron
- Extremely high bending strength and tensile strength
- High resistance to wear and to corrosion
- Low thermal conductivity
Zirconium oxide occurs as monoclinic, tetragonal and cubic crystal forms. Densely sintered parts can be manufactured as cubic and/or tetragonal crystal forms. In order to stabilise these crystal structures, stabilisers such as magnesium oxide (MgO) or yttrium oxide (Y2O3) need to be added to the ZrO2.
Characteristics tables
|
Properties |
Units |
Alumina |
Zirconia |
Silicon carbide |
Boron nitride |
Aluminium nitride |
Silicon nitride |
Aluminium titanate |
|
|
Reference N° |
|
055-0010 |
055-0020 |
055-0021 |
103-0010 |
200-0090 |
055-0030 |
103-0020 |
036-0010 |
|
Purity |
|
Al2O3 99,7% |
ZrO2-Y2O3 |
ZrO2-MgO |
SSiC |
BN HD |
AlN |
Si3N4 |
Al2TiO5 |
|
Classification DIN ISO |
|
C779 |
C800 |
C800 |
- |
- |
C910 |
C935 |
- |
|
Characteristics table |
|||||||||
|
Density |
g/cm3 |
3.9 |
6 |
5.6 |
> 3.1 |
2.2 |
3.3 |
3.18 to 3.4 |
3.35 |
|
Open Porosity |
% |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
12.5 |
|
Colour |
|
ivory |
white |
yellow |
black |
white |
grey |
grey |
ivory |
|
Mechanical characteristics 20°C |
|||||||||
|
Hardness Vickers HV10 |
N/mm2 |
> 17 000 |
> 12 000 |
> 10 000 |
> 25 000 |
- |
> 10 500 |
15 200 |
< 2000 |
|
Compression strength |
N/mm2 |
2 500 |
> 1800 |
> 1800 |
> 2 500 |
142 |
> 2000 |
3 000 |
- |
|
Flexural strength |
N/mm2 |
> 370 |
> 600 |
> 600 |
> 400 |
45 |
> 350 |
769 |
25 |
|
Elasticity modulus |
GPa |
> 380 |
> 200 |
> 200 |
400 |
- |
> 320 |
290 |
17 |
|
Toughness |
MPa.m1/2 |
4 |
7 |
8 |
3.5 |
|
> 3 |
7.5 |
- |
|
Weibull Modulus |
|
15 |
20 |
16 |
10 |
|
- |
25 |
- |
|
Thermal characteristics |
|||||||||
|
Max. operating temperature |
°C |
1700 |
1000 |
1000 |
1900 (1600 on air) |
1400 (850 on air) |
1000 |
1400 |
1500 |
|
Specific heat 20°C |
J/kg.K |
900 |
400 |
400 |
670 |
- |
- |
700 |
- |
|
Thermal conductivity 100°C |
W/mK |
30 |
2.5 |
3 |
125 |
47 |
180 |
25 |
1.4 |
|
Thermal expansion 20 to 1000°C |
10-6/K-1 |
8.5 |
11 |
11 |
4.5 |
5.85 |
4.6 |
3.2 |
< 1 |
|
Electrical characteristics |
|||||||||
|
Specific resistivity 20°C |
Ω.m |
1012 |
1012 |
> 10 7 |
10-3 to 106 |
1012 |
> 1010 |
1012 |
1012 |
|
Specific resistivity 600°C |
10 6 |
> 10 3 |
> 10 3 |
- |
|
- |
- |
- |
|
|
Dielectric strength |
kV/mm |
17 |
- |
- |
- |
19.6 |
15 |
- |
- |
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