Sialon Ceramic Impellers
International Syalons manufacture silicon nitride based sialon advanced ceramic impellers which are used in the Chemical & Process industries often for mixing or stirring highly corrosive chemicals and abrasive slurries.
Traditionally, impellers have been made from metal or plastic coated metals. These suffer badly from wear, thus contaminating the chemical, which in clean environments is unacceptable. Also, corrosion, particularly for metallic impellers, also contaminates the chemical. This wear and corrosion results in often short lifetimes for these impellers.
Sialons are alloys of silicon nitride and are characterised by excellent mechanical properties, and thermal and chemical stability. Syalon 101 ceramic impellers possess excellent corrosion resistance and wear resistance. For example, Syalon 101 is resistant to corrosion by many acids, such as boiling hydrochloric and sulphuric acid, and alkaline materials, such as sodium hydroxide. This chemical stability, combined with high strength, hardness and toughness make Syalon 101 an ideal material for many demanding chemical applications.