Aluminium Titanate Revolutionizing Thermal Insulation in High Temperature Applications
Aluminium titanate has revolutionized thermal insulation in high-temperature applications. Discover how this cutting-edge material offers exceptional thermal stability to reduce energy waste while protecting equipment against chemical corrosion.
CUMI reaction sintered aluminium titanate is ideal for non-ferrous casting houses (riser tubes, pouring nozzles and dosing tubes) due to its outstanding chemical resistance, excellent mechanical strength and low coefficient of thermal expansion. Furthermore, this material can withstand extreme temperatures as well as sudden temperature shifts without cracking under pressure.
Advantages
With today’s increasing demands for higher performance and efficiency in spaceflight, nuclear electric/thermal propulsion systems and jet engines necessitating materials that can withstand creep effects, it is becoming more critical that high performance materials be designed with sufficient creep resistance properties for resistance against creep effects at elevated temperatures. Creep resistance should therefore be evaluated before any design decisions are made.
Aluminum titanate (Al2TiO5) is an exceptional high-temperature material derived from natural sources and offers exceptional combinations of thermal and mechanical properties – including corrosion resistance, low thermal expansion coefficient and shock resistance – making it suitable for components that process molten metals such as foundry technology or metallurgical melting processes.
Applications
Aluminum titanate’s unique ability to withstand extreme temperatures and conditions allows it to protect and extend the life of expensive equipment while decreasing costs and downtime in demanding applications.
Silcarb provides a selection of machinable aluminium titanate products tailored specifically for foundry applications – such as sprue bushing, riser tube/stalks and auto pour ceramic ladles – designed specifically to meet foundry applications, including sprue bushing, riser tube/stalks and auto pour ceramic ladles. These high-density isostatically pressed materials offer exceptional chemical and abrasive resistance while no liquid alloy wetting occurs during casting processes – offering total gas impermeability as well as low thermal expansion coefficient.
Aluminium titanate can withstand high levels of thermal shock, making it suitable for applications involving melting furnace linings, spacer rings in catalytic converters or diesel filter media, precision casting applications that demand accurate dimensions and shapes as well as precision casting applications requiring long-term durability.
Performance
Aluminum titanate is an exceptional high-temperature technical ceramic, featuring impressive performance in extreme environments. Produced through reactive sintering of alumina and titania powders in stoichiometric proportions, aluminum titanate exhibits low coefficient of thermal expansion while offering exceptional chemical resistance as well as mechanical strength at high temperatures.
Foundry technology utilizes aluminum castings extensively, such as in nozzles and riser tubes used for non-ferrous metal melting or master molds. Their excellent contract rate with molten aluminum, total aluminum wetting impermeability, and gas resistance make them the superior choice when processing molten aluminum.
Aluminum titanate’s long-term durability means components made with it last longer than other materials and are more resistant to wear and corrosion, cutting maintenance costs for industrial users. Energy efficiency and sustainability goals are driving demand for durable materials like aluminum titanate; continued innovation in manufacturing processes (such as 3D printing or precise sintering methods ) is also increasing quality production from this material.
Cost
Aluminum titanate is an exciting ceramic material with exceptional thermal shock resistance, low coefficient of linear expansion and corrosion resistance – making it suitable for demanding applications in harsh environments. Aluminum titanate’s ability to withstand high temperatures while remaining stable could result in energy savings – an aspect consistent with an increased trend toward sustainability within industrial processes.
Figure 1 depicts XRD patterns of different sintered A/AT composites with addition of rutile (0-40wt%), as can be seen. Rutile addition improves sinterability and thermomechanical response of alumina material.
Alumina-rutile systems offer promising solutions for conveying, dosing, and controlling light metal melts in an economical and sustainable manner. They also excel at precision casting applications requiring precise shapes and dimensions as well as resistance against chemical corrosion, slag formation, alkali exposure, as well as long service life with reduced maintenance costs.