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Products > Crucibles & Boat > > Boron Nitride Crucible
Boron Nitride Crucible
Product name : Boron Nitride Crucible
Product No. : 2021910211025
Material : Boron Nitride
Size : 30*26*16cm; 110*24*10; 130*30*10; 150*30*10 or according to the customer's requirements
Density(g/cm3) : 2.29
Refractive Index : 2.11
Form : White
Purity : 99%
Application : Crucible and bearing plate for sintering; Electrode insulator and protective tube of high temperature furnace; Polysilicon ingot furnace insulation assembly
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Boron Nitride (BN) ; Molecular Weight: 24.82

Take it out at 1000 ℃ and cool it at room temperature for 100 minutes without cracking.

Hardness (HS): 2.0
Compressive strength (kg / cm) ²):> six hundred
Bending strength (kg / cm) ²):> three hundred
Coefficient of thermal expansion (1 / k): 10-6
Resistvity (Ω. Cm): 1014
Breakdown voltage kV / mm ²: 30~40
Service temperature ℃: above 2000 ℃ (vacuum or gas protection)
Color: milky white
Melting point ℃: 3000 ℃
Boron nitride material has high thermal stability, chemical stability and electrical insulation. It also has high thermal conductivity, dielectric properties and easy to process products. Its melting point is as high as 2800 ℃. It is not only a typical electrical insulator, but also an excellent heat conductor.
1) BN is the only ceramic that can be machined, and the machining accuracy reaches 0.01mm;
2) The insulation strength is 2300V / cm, which is 8 times that of Al2O3; RT resistivity at 1000 ℃ > 10? 7? 9Ω.cm;
3) Excellent thermal shock resistance, 100 times recovery from 20 ℃ to 1000 ℃ without damage;
4) It does not react with common metals (iron, copper, aluminum, lead, etc.), rare earth metals, precious metals, semiconductor materials (germanium, silicon, potassium arsenide), glass, molten salt (crystalline stone, fluoride, slag), inorganic acids and bases.

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