Technical Ceramic / Boron Nitride for Polycrystalline Silicon Ingot Furnace

Specifications

Boron nitride ceramic
fessional 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