Introduction
Aluminum titanate is a composite of alumina and titanium dioxide in a certain chemical ratio, the structure is orthorhombic, Al2TiO5 has a higher melting point (1860℃ ± 10℃), a lower coefficient of thermal expansion (at RT – At 1000℃, α < 2.0 × 10 -6 / ℃), and has excellent thermal shock resistance. In addition, it has the property of not wetting with many metals (especially non-ferrous metals) melts and glass melts. Therefore, aluminum titanate ceramics can be widely used in harsh environments. Aluminum titanate is an ideal material for riser tubes due to its low thermal expansion, good thermal shock resistance and non-wetted aluminum.
Property
| Composition | Al2O3+TiO2+Stabilizer |
| Bulk Density g/cm3 | 3.2 |
| Flexural Strength MPa | 50 |
| Apparent Porosity % | <7 |
| Coeff of Thermal Exp | 1.15x10-6 |
| Thermal Conductivity (1200°C) W/m.K | 0.86 |
Features
- Lower coefficient of thermal expansion.
- Excellent thermal shock resistance.
- Can not be wetted by non-ferrous metal melts such as aluminum liquid
- Excellent corrosion resistance.
- High temperature resistance (can be used at 1400 ° C)
Application
- Aluminum foundries