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Help CenterTechnical Ceramic / Boron Nitride for Polycrystalline Silicon Ingot Furnace
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Specifications
Boron nitride ceramicfessional manufacturer
2.CE quality
3. High thermal conductivity
Boron Nitride Ceramic Parts
Boron Nitride ceramic are made by hot pressing hexagonal Boron Nitride powders. The color of BN products is milky, true density is 2.27g/cm , Mohs value is 2, they have a high melting point(sublimate point is 3000°C). When in a condition of inert atmosphere, their maximum service temperature can reach to 2800°C. Their thermal conductivity is 25W/(m·K), similar to stainless steel.And coefficient of liner And coefficient of liner expansion is between 2.0×10 /°C to 6.5×10 /°C.
1. the features of the Boron nitride ceramc
1) material of boron nitride
2) high temperature resistance, 2000C
3) good thermal stability
4) high theraml conductivity
5) high strength
2.The technical paramaters of boron nitide BN-ceramic
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 |
|
Mohs' hardnees |
2 |
|
Dielectric constant |
3.8-4.3 |
|
Bending strength |
>35mpa |
|
Compression strength |
>200mpa |
|
Density |
1.9—2.2 g/cm3 |
|
Chemical Composition |
B+N |
99.5% |
Oxygen Content |
<0.4% |
|
Carbon Content |
<0.02% |
|
Working Environment Temperature |
Oxidizing Atmosphere |
850°C |
Vacuum |
1800°C |
|
Inertia |
2300°C |
|
3. Applications of boron nitride ceramic BN-ceramic:
1) Electronic Parts - heat sinks, substrates, coil forms, prototypes
2) Boron doping wafers in silicon semiconductor processing
3) Vacuum melting crucibles
4) High precision sealing, brazing, and metallizing fixtures
5) Microwave tubes
6) Horizonatal caster break rings
7) Low friction seals
8) Plasma arc insulators
9) High temperature furnace fixtures and supports
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