Boron Nitride Ceramic Sleeve for Furnace

Boron Nitride Ceramic Sleeve for Furnace

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Boron Nitride Ceramic Sleeve for Furnace

Boron nitride ceramic is chemically and has relatively good thermal conductivity, low thermal expansion and microwave clarity. Boron nitride can be quickly machined as well. Moreover, glass, salts and the rest of liquid metals are non-wetting. This ensures that neither of these compounds can be moistened, and it is far more immune to chemical assaults.Hexagonal boron nitride (h-BN) performs very well under high heat condition and is effective in the air at temperatures of up to 900 degrees C, in the vacuum at 1,900 degrees C and in the inert environment at 2,000 degrees C. BN is self-lubricating as well,as a result, it does not need the use of molecules of gas or water stuck in its layers. Because of this, in a vacuum, which is important for aerospace applications, boron nitride (BN) can work perfectly.

Properties

1. High thermal conductivity
2. Good thermal shock resistance
3. Low thermal expansion
4. Exceptional heat resistance
5. Good chemical Inertness
6. High electrical resistance
7. High volume resistivity
8. Low dielectric constant and loss tangent
9. Excellent machinability
 

Applications

1. Electronic parts – heat sinks, substrates, coil forms, prototypes
2. Vacuum melting crucibles
3. CVD crucibles
4. Microcircuit packaging
5. Sputtering targets
6. High precision sealing, brazing, and metallizing fixtures
7. Microwave tubes
8. Horizontal caster break rings
9. Low friction seals
10. Plasma arc insulators
11. High temperature furnace fixtures and supports

Material Properties
Boron Nitride Properties:
Thermal Conductivity
(40-50)W/m·k
Thermal expansivity
(6.5-7.5)*10-6 °C
Resistivity
>1012 Ω·m
Puncture voltage
(2.5-4.0)*106 /kv·m
Dielectric constant
3.8-4.3
Bending strength
>35mpa
Compression strength
>200mpa
Density
1.9—2.2 g/cm3
Working Temperature
Oxidizing Atmosphere
850°C
Vacuum and inertia
2000°C

Boron Nitride Ceramic Sleeve for Furnace

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