Silicon Nitride ceramic (Si3N4(ceramic))

Si3N4 (silicon nitride) is a high-performance ceramic material with excellent mechanical, thermal and electrical properties, as well as good chemical stability, which makes it ideal for a variety of applications.

Dihedral Technology(DHD) Co., Ltd. manufacture and processing/provide multiple specifications and high quality Si3N4(ceramic) crystal,targets,materials.

Applications

• Semiconductor equipment: Silicon nitride can be used as an insulating material or dielectric for integrated circuits, power devices, etc.
• Mechanical parts: Silicon nitride has high hardness and wear resistance, and can be used to make bearings, seals, etc.
• Thermal management: Due to its good thermal conductivity and thermal stability, silicon nitride is often used to make heat diffusers and heat sinks.

Features

• High hardness and strength: Silicon nitride has extremely high hardness and strength, which allows it to withstand harsh operating conditions.
• Good thermal properties: Silicon nitride has excellent thermal conductivity and thermal stability, and can maintain its performance at high temperatures.
• Excellent electrical properties: Silicon nitride has high resistivity and high dielectric strength, which makes it a good application in electronic devices.
• Corrosion resistance: Silicon nitride has good corrosion resistance to most acids and alkalis, maintaining its properties in a variety of chemical environments.
• Good wear resistance: Silicon nitride has good wear resistance and is suitable for making various mechanical parts with severe wear.

  • Molecular Formula

    Si3N4

    Relative Molecular Mass

    140.28

    Color

    Gray, Gray Black

    Crystal System

    Hexahedral

    Preparation Method

    Heat Pressing

    Relative Density

    99.5%

    Density

    3.2+/-0.02 g/cm3

    Moh's Hardness

    9~9.5

    Melting Point

    1900℃ , Usually decomposed at 1900℃ at normal pressure

    Thermal Expansivity

    2.8~3.2×10-6/℃ (20~1000℃)

    Heat Capacity

    0.71J/(g·K)

    Thermal Conductivity

    15~ 20W/(m·K)

    Modulus of Elasticity

    300~320 GPa

    Fracture Toughness

    6.0~7.0 MPa.m

    Flexural Strength

    650~750 Mpa

    Webpark Module

    10~12

    Solubility

    Insoluble in water. Solute in hydrofluoric acid

    Oxidizing Temperature

    The temperature of starting oxidation in the air is 1300 to 1400℃