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Aluminum titanate is a refractory ceramic material with the characteristics of high temperature resistance, low thermal expansion coefficient, low thermal conductivity, excellent thermal shock resistance, and corrosion resistance. Aluminum titanate ceramic products are gradually replacing alumina, zirconia and other ceramic materials in many fields due to their outstanding performance. Aluminum titanate rings are mainly used for aluminum liquid outlets of aluminum melting furnaces, kiln linings, refractory bushings, etc. However, due to the poor flexural strength of aluminum titanate, its application in some high-temperature and high-pressure environments is limited.
Aluminum titanate ring is a high-temperature resistant ring-shaped component mainly made of aluminum titanate. It is usually used in harsh environments with high temperature and severe thermal shock.
Aluminum titanate rings are widely used in refractory linings of metallurgical and glass kilns. They can withstand the impact of molten metal/glass above 1400°C.
Aluminum titanate rings are used as catalyst carriers to support precious metal coatings and can work stably in exhaust gases of 800-1000°C.
Aluminum titanate rings are used for the casting process of titanium alloys and some other high-temperature alloys. They can withstand the erosion of molten metal in 1500°C and are non-stick to the metal liquid, which can improve casting accuracy.
ADVANTAGES OF SILICON NITRIDE:
Aluminum titanate has a melting point of up to 1860°C. It be used for a long time at 1400°C.
The thermal expansion coefficient of aluminum titanate is <1.5×10⁻⁶/°C (even negative expansion), and it has excellent thermal shock resistance (1000°C).
The thermal conductivity of aluminum titanate is <1W/mK. It has excellent thermal insulation.
Aluminum titanate is highly resistant to acid and alkali corrosion. It does not wet metal/glass, and is suitable for chemical, metallurgical, casting and other industries.
COMPARISONS OF DIFFERENT MATERIALS:
Material | Aluminum Titanate | Alumina | Mullite | Silicon Carbide | Zirconia |
Thermal Expansion Coefficient | <1.5×1⁻⁶/°C | 8×10⁻⁶/°C | 5×10⁻⁶/°C | 4.5×10⁻⁶/°C | 9.5×10⁻⁶/°C |
Highest Working Temperature | 1500℃ | 1700℃ | 1800℃ | 1600℃ | 2000℃ |
Thermal Shock Resistance | Excellent | Bad | Good | Excellent | Bad |
Mechanical Strength | Low | Great | Good | Excellent | Great |
Density | 3.4g/cm3 | 3.7g/cm3 | 3.2g/cm3 | 3.2g/cm3 | 6.0g/cm3 |
