Share this page by mail Zirconia crucible
Partly (MgO Magnesia) stabilised ZrO2 Zirconium Oxide obtained by isostatic pressing, ideal for use up to 1800˚C.
Advantages
- Can be used up to 1800°C
- Very good resistance to thermal shock
- Erosion resistant
- Very low thermal expansion
- Resistant to wetness from molten metals
Applications
- Crucibles for induction melting
- Crucibles for use in oxidising or vacuum atmospheres
- Crucibles for precious metals or superalloys
Composition
|
Oxyde |
Pourcentage |
|
ZrO2 |
95.3 |
|
MgO |
2.2 |
|
SiO2 |
1.2 |
|
Al2O3 |
0.7 |
|
CaO |
0.2 |
|
Fe2O3 |
0.2 |
|
TiO2 |
0.2 |
Physical proprieties
|
Density |
g/cm3 |
4,6 |
|
Open porosity |
% |
18 |
|
Breakage module |
MPa |
24.1 |
|
Max. temperature |
°C |
1800 |
|
Thermal conductivity |
W/mK |
1,4 (à 800°C) |
|
Thermal dilatation |
10-6/K |
|
|
at 600°C |
6.6 |
|
|
at 1000°C |
6.2 |
|
|
at 1300°C |
2.3 |
Thermal dilatation curve
- Duration of test: 18 hrs
- Thermal cycle (in ˚C): 21 – 1550 – 67
- Maximum dilatation: 9.22.10-3 mm