Boron Nitride (BN) Ceramics

Because of its excellent high temperature resistance, oxidation resistance, corrosion resistance, insulation and thermal conductivity, boron nitride ceramics have been widely used in the semiconductor industry, vacuum high temperature sintering furnaces, vacuum heat treatment furnaces and other fields.

Features

1. Self-lubricity
2. Oxidation resistance
3. Corrosion resistance
4. Electrical insulation
5. Thermal conductivity
6. Chemical stability

Typical technical data

Main chemical composition: BN≥99.5% (at room temperature)
Binder: Boron oxide (at room temperature)
Bulk density g/cm3 1.6-1.7 at room temperature (at room temperature)
Maximum operating temperature-
900℃ (in air)
2100℃ (in an inert gas)
1900℃ (in high vacuum for a long time)
Flexural strength: 25 Mpa (at room temperature)
Compressive strength: 50 Mpa (at room temperature)
Linear expansion coefficient: 1.5X10^(-6)/K (20-1000℃)
Thermal conductivity: 40 W/(㎡·K) (20-1000℃)
Volume resistance: >10^14Ω. m

Application

1. Can be used as a high temperature galvanic protection sleeve
2. Crucibles for melting metal, utensils, pipes for conveying liquid metal, pump parts, and abrasives for cast steel
3. High temperature electrical insulation material
4. High-temperature structural parts, rocket combustion chamber lining, spacecraft heat shielding, magnetofluidic parts, corrosion-resistant parts for generators
5. It can be used as an insulator for high temperature, high voltage, insulation, heat dissipation components and plasma arcs.
6. Structural materials of atomic reactors
7. Spouts of aircraft and engines
8. The separation ring used in metallurgy for continuous steel casting, the flow notch of amorphous iron
9. Make evaporation boats for various capacitor film aluminization, picture tube aluminization, display aluminization, etc.

Boron nitride ceramics