Reaction Bonded Silicon Nitride/Si3N4 Rod

Reaction Bonded Silicon Nitride/Si3N4 Rods are part of our wide range of ceramic materials. They are made by nitriding compacted silicon powder, leaving a small amount of unreacted silicon to aid densification. These rods combine high strength, toughness and thermal shock resistance. These properties make them suitable for applications like mechanical seals, bearings, nozzles and crucibles operating at high temperatures. We offer 3 variations of Reaction Bonded Silicon Nitride/Si3N4 Rods to meet your specific requirements.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Rod

Diameter		+20% / -10%

Material Properties for Ceramics

Chemical Resistance

Element	Value
Acids - concentrated	Fair
Acids - dilute	Good
Alkalis	Fair
Halogens	Good
Metals	Fair

Electrical Properties

Element	Value
Dielectric constant	10
Volume resistivity( Ohmcm )	>10⁷@25

Physical Properties

Element	Value
Apparent porosity( % )	15-23
Density( gcm⁻³ )	2.4

Thermal Properties

Element	Value
Upper continuous use temperature( C )	1200-1500
Specific heat( J K⁻¹ kg⁻¹ )	690@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	10-16@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	3.3@20-1000°C