Silicon Nitride Powder Aug 10, 2009

Power for silicon nitride (Si3N4) is light, hard, and has low thermal expansion coefficient. It has high mechanical strength, fracture toughness, and it is resistant to deformation at room temperature as well as at elevated temperature.

Si3N4 differs from other ceramics because it doesn't melt, but, between 1800 and 1900 °C, it decomposes and sublimates into Si and N. However, stabilized forms can be made.
Engine parts: valves, pistons, etc. Gas turbines
Diesel engines
Cutting tools
Bearings
High strength over a wide temperature range
High fracture toughness
High hardness
Outstanding wear resistance, both impingement and frictional modes
Good chemical resistance
Papermaking machine foils
Wear parts

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