Silicon Nitride

Description

Silicon nitride ceramics offer an outstanding comprehensive performance. It is characterised by low density, high strength, wear and corrosion resistance. Silicon nitride also maintains excellent performance at high temperatures. It is capable of meeting the demands of industrial applications in harsh working conditions.

Features

Light weight
High Strength
High hardness
Self-lubricating
Thermal shock stability
High thermal conductivity
Low coefficient of thermal expansion
Wear-resistant
Corrosion resistant

Applications

Board
Ball
Blades
Rods
Plungers
Seals
Engine parts
Nozzle
Bearing
Other applications

GW Ceramics provides customized services

Properties

Mechanical Properties

	Colour	Density (g/cm³)	Mohs Hardness	Compressive Strength (Mpa)	Flexural Strength (Mpa)	Young’s modulus （GPa）	Fracture Toughness (MPa·m^1/2)	Poisson’s Ratio
Silicon Nitride	black	3-3.3	9-9.5	≥2500	≥600	300	5-8	0.25

Thermal Properties

	Coefficient of Thermal Expansion (40-400°C) (× 10-6/℃)	Thermal Shock Resistance (℃)	Thermal Conductivity (W/m·K)	Maximum Operating Temperature (without load) (℃)
Silicon Nitride	3	＞500	20	1400

Electrical Properties

	Dielectric Constant (1MHz)	Dielectric Strength (kV/mm)	Volume Resistivity (25°C) (Ω·cm)
Silicon Nitride	8-10	10	＞10¹⁴

*The data in the charts show the properties of the ceramic materials.
*The above figures do not represent any commitment to the customer’s product.
*Due to differences in production processes and product forms, the final property data for ceramics may vary.