High Purity 99.99% Pyrolytic Boron Nitride Ceramic PBN Crucibles
Insulating and high melting point
High operating tem ( 2800°C )
High thermal conductivity
Long life services
Boron Nitride (BN) is a white, low porosity refractory material with physical and mechanical properties similar to Graphite. However, unlike Graphite, Boron Nitride has high thermal conductivity and good thermal shock performance. The most common formulation of Boron Nitride contains boric oxide, which can cause Boron Nitride to absorb moisture, resulting in swelling and property degradation.
Type | 99BN | CBN | ABN | ZBN |
Main Content | BN>99% | BN>98.5% | BN+AlN | BN+ZrO2 |
Binder | B2O3 | CaB2O6 | ALBO3 | B2O3 |
Density (g/cm3) | 1.95-2.0 | 2.0-2.1 | 2.6 | 2.95 |
Flexural Strength (Mpa) | 30 | 100 | 200 | 200 |
Compressive Strength (Mpa) | 100 | 280 | 350 | 380 |
Electrical Resistivity (ohm.cm) | >10^14 | >10^13 | >10^14 | >10^12 |
Max. Working Temp. (°C) air | 900 | 900 | 900 | 1000 |
Max. Working Temp. (°C) inert gas | 2400 | 2400 | 2100 | 1800 |
Max. Working Temp. (°C) vacuum | 2200 | 2200 | 1900 | 1800 |
Thermal Conductivity (W/m.K) | 20 | 35 | 50 | 30 |
Expansion Coefficient 25 - 1000 °C (10^-6/K) | 1.5 | 2 | 4.5 | 2.5 |
