Aluminum Titanate (Al₂TiO₅) is a ceramic material known for its excellent thermal shock resistance, low thermal expansion, and high refractoriness, making it valuable in high-temperature applications. Due to its unique microstructure, aluminum titanate is particularly well-suited for applications where thermal cycling is frequent, as it can withstand rapid temperature changes without cracking or deforming. It is widely used in automotive, metallurgical, and industrial applications.
Formula: Al₂TiO₅, composed of aluminum oxide (Al₂O₃) and titanium dioxide (TiO₂).
Crystal Structure: Aluminum titanate has an anisotropic crystal structure that gives it low thermal conductivity and exceptional thermal shock resistance. However, it is also somewhat brittle and can undergo phase decomposition over time at high temperatures.
Appearance: Typically, aluminum titanate appears as a gray or light-colored ceramic.
Low Thermal Expansion: Al₂TiO₅ has near-zero thermal expansion, which helps it maintain dimensional stability under rapid heating and cooling.
Porosity: Often exhibits a porous microstructure, which can be beneficial in certain applications, like filtration, but may reduce mechanical strength.
Thermal Shock Resistance: One of aluminum titanate’s standout properties is its ability to withstand extreme and rapid temperature fluctuations without cracking, making it ideal for applications with frequent thermal cycling.
High Refractoriness: Al₂TiO₅ is stable up to temperatures around 1500°C, which is suitable for many high-temperature processes.
Chemical Inertness: It is chemically resistant to a wide range of materials, including many slags and molten metals, making it durable in harsh environments.
Automotive Industry: Used in diesel engine components, such as exhaust port liners, due to its resistance to thermal shock and ability to handle high temperatures.
Casting and Foundry: Aluminum titanate is used in metal casting applications, such as riser tubes, ladles, and molds, where it comes in contact with molten metals. Its thermal shock resistance helps reduce cracking during temperature changes.
Kiln Furniture: In ceramics manufacturing, aluminum titanate is used for kiln furniture, such as shelves, to support ceramic products during firing, as it can withstand repeated heating and cooling cycles without deforming.
Industrial Furnaces: As a refractory material, aluminum titanate is used in various furnace components, where stability at high temperatures and resistance to corrosion are essential.
Machining: Aluminum titanate is hard to machine and may require diamond tools for shaping and finishing.
Storage Conditions: Stable in standard environmental conditions; however, care should be taken to avoid mechanical shock due to its brittle nature.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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