Gas Pressure Sintered Silicon Nitride Sheet

Gas Pressure Sintered Silicon Nitride Sheet is a high-performance ceramic material known for its exceptional fracture toughness, high flexural strength, and resistance to thermal shock. Produced using gas pressure sintering (GPS), it achieves near-theoretical density and fine microstructural uniformity, often incorporating rare-earth oxide additives to enhance grain boundary cohesion and oxidation resistance. Its mechanical stability under extreme thermal gradients makes it indispensable in demanding environments such as aerospace components, automotive engine parts, and industrial cutting tools. Specific applications include turbocharger rotors for high-speed engines, wear-resistant bearings for heavy-duty machinery, and substrates in electronics where thermal and mechanical reliability are critical. In research and industrial development, GPS silicon nitride sheets enable innovation in high-efficiency energy systems, precision manufacturing, and advanced tribological applications, ensuring long service life even under severe operational stresses.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Foil/Film/Sheet

Thickness		±20%

Material Properties for Ceramics

Physical Properties

Element	Value
Apparent porosity( % )	0
Density( gcm⁻³ )	3.24

Mechanical Properties

Element	Value
Hardness - Vickers( kgf mm⁻² )	1450
Fracture toughness( MPam(0.5) )	7

Thermal Properties

Element	Value
Thermal conductivity( W m⁻¹ K⁻¹ )	22 - 3.6
Thermal conductivity( W m⁻¹ K⁻¹ )	25 - RT-1000
Thermal conductivity( W m⁻¹ K⁻¹ )	25
Thermal conductivity( W m⁻¹ K⁻¹ )	22
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	3.6@RT-1000
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	3.6 -
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	RT-1000 - 7.0
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	3.6@RT-1000