Refractory high temperature use Corundum-mullite grooved ceramic setter plate
Formation Process
Corundum-mullite is typically synthesized through two methods:
Sol-Gel Method: The solgel process is used to prepare powders that are then sintered to form corundum composites, often resulting in superior microstructure.
Solid-tate Reaction: This invoves mixing bauxite, siica, and other additives and subiecting the mixture to high-temperature sintering to form corundum phases.
Key Properties of corundum-Mullite
● High-Temperature Stability
One of the main advantages of corundum-mulite is its excellent high-temperature stability.lt can maintain its integrityin environments above 1500'c, makincit ideal for applications in steel smelting, high-temperature kilns, and other industries reguiring resistance to extreme heat. Compared to traditional bauxitematerials, corundum-mullite retains high thermal shock resistance and stability at high temperatures.
● Mechanical Strength and Wear Resistance
Corundum-mulite exhibits superior hardness and strength compared to most refractory materials, making it highly effective in environments subjected toheavy loads and strong impact. its high strength is especialy important in metalurgical aplications,such as fumace inings, where the materal is exposed tointense mechanical stress.
● Low Thermal Expansion and Thermal Shock Resistance
Mulite’s composition gives corundum a low thermal expansion coefficient, which contnibutes to its exceptional thermal shock resistance. This makes itparticularly suitable for high-temperature applications with frequent temperature luctuations, such as ceramic kins and metal smelting furmaces.
● Chemical Stability
Corundum-mulite exhibits strong chemical stability and is highly resistant to both acidic and alkaine corrosion.In industries such as metallrgy and chemicalsWhere materials are often exposed to high temperatures and chemical corrosves, coruncum-mulite efectively prevents deradation and extends the servicelife of equipment.
Applications of Corundum-Mullite
● Chemical Stability
Corundum is widely used in the steelmaking industry for high-temperature furace linings and fumace bottoms. ts excellent high-temperature and impacresistance alow it to withstand the extreme temperature vamatons and mechanical stress encountered in these enyronments, Additionaly, corungum is usedin casting and metal smelting furnaces, where high -performance materials are critical for efficiency and durability.
● Ceramics and Glass lndustry
Corundum , as a high-performance ceramic materia, is widely used in ceramic kilns and glass meling furnaces. ts superor high-temperature resistance andthermal shock stability make it ideal for ensuring the stability of production processes at extreme temperatures.
● Aerospace
Due to its excelent thermal expansion properties and high-temperature stability,corundum is also used in the aerospace industry. it serves as an esentiamaterial for thermal protection systems and jet engine components,helping to reduce the thermal shock encountered by spacecrat during reentry into theatmosphere.
● Nuclear and Energy Sectors
Corundum-mulite’s radiation resistance and high-temperature stabiity make it an ideal materal for use in nuclear reactors as a ining material.lt canwithstand the high temperature and radiation envronment, ensuring the protection of reactors. Additionaly,it is utilized in energy applications such as combustion equipment for new energy sources.