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Boron Nitride Ceramic components, BN


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Boron nitride ceramic products must be vacuum-sealed because they are highly sensitive to oxygen and moisture in the environment. When exposed to air, boron nitride ceramics readily absorb moisture, which can lead to a degradation of their material properties. Additionally, the surface of this ceramic is susceptible to contamination by fine particles, dust, or other pollutants. These contaminants can adversely affect the material's electrical insulation properties and other physical characteristics. The performance and applications of boron nitride ceramics are as follows:

                        Boron Nitride Ceramic components, BN details   
BN Ceramic Properties 
                                                                                                         

Product Model CRVT-BN-H CRVT-BN-99 CRVT-BN-A CRVT-BN-B CRVT-BN-C CRVT-BN-D CRVT-BN-E CRVT-BN-S
Composition BN > 99.7% BN > 99% BN + Al + Si BN + Zr + Al BN + SiC BN + ZrO2 BN + AlN BN + SiN
Color White White White White Greyish-Green White Greyish-Green Dark Gray
Density (g/cm³) 1.50 - 1.60 1.95 - 2.05 2.20 - 2.30 2.25 - 2.35 2.40 - 2.50 2.75 - 2.85 2.75 - 2.85 2.20 - 2.30
Electrical Resistivity (Ω·cm) > 10^14 > 10^14 > 10^13 > 10^12 > 10^12 > 10^13 > 10^13 > 10^13
Max Using Temp (°C)
- In Air 900 900 1000 1000 1000 1300 1000 1000
- In Inert 2100 2100 2000 1800 1800 1800 1800 1800
- In Vacuum 1900 1900 1750 1500 1500 1800 1500 1800
Bending Strength (Mpa) 18 30 60 85 85 100 120 220
Compressive Strength (Mpa) 25 45 145 145 150 220 220 400
Thermal Expansion (25°C - 1000°C) (10^-6/K) 1.5 1.8 2 2 2.8 3.5 2.8 2.8
Thermal Conductivity (W/mK) 35 40 35 30 30 45 35 55
Hardness HSD 12 18 40 45 45 40 40 45
Applications high-temperature Vacuum high-temperature Vacuum Powder Metallurgy Powder Metallurgy Powder Metallurgy Metal Casting Powder Metallurgy Powder Metallurgy
Insulators for High Temperature Furnace
Crucibles for Metal Evaporation
Parts for Melting Metals or Glass
Casting Molds for Metal or Alloy
High Temperature Support Parts
Transport Pipes or Nozzles for Melting Metal

Application Industries

High-Temperature Insulation Materials: Boron nitride ceramics are utilized as thermal insulation and heat protective layers in high-temperature environments, particularly for thermal protection systems in the aerospace industry.

Electrical Insulation Materials: They serve as high-performance electrical insulation materials, especially in high-frequency and high-voltage electronic and electrical equipment.

Semiconductor Industry: Boron nitride ceramics are used as liners and isolation materials in high-purity and high-temperature processing equipment in semiconductor manufacturing.

Reactor Linings in the Chemical Industry: They function as lining materials for reactors in highly corrosive and high-temperature chemical reaction environments.

Optical and Laser Systems: In optical and laser systems, boron nitride ceramics are employed for components with high reflectivity and thermal management.

High-Temperature Kiln Furniture: For high-temperature vacuum environments, such as vacuum furnaces.

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