Silicon Aluminum Oxynitride SiAlON

Industrial applications. Typical uses are as protection sheath for immersion thermocouples used in nonferrous metal melting, immersion heater and burner tubes, degassing and injector tubes in nonferrous metallurgy, metal feed tubes in aluminum die casting, welding, and brazing fixtures and pins. 

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Materials made of silicon nitride, silicon oxynitride, or sialon-bonded silicon carbide have high thermal shock and corrosion resistance and may be used for pump parts, acid spray nozzles, and in aluminum reduction cells (156—159). A very porous silicon carbide foam has been considered for surface combustion burner plates and filter media. It can also be used as a substrate carrying materials such as boron nitride as planar diffusion source for... 

Nitrides primarily include sihcon rritride Si3N4 and alrtminrtm and silicon oxynitrides, also called sialons, aluminum rritride AIN, and various metallic rritrides, including TiN. 

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