Pyrolytic Boron Nitride (PBN)
Pyrolytic Boron Nitride (PBN) is an ultra-high-purity ceramic material produced through chemical vapor deposition (CVD) under high-temperature and vacuum conditions, achieving a purity of 99.999% (5N grade). Its exceptional chemical inertness and high-temperature stability make it an ideal choice for semiconductor processing, crystal growth, and high-vacuum applications. The ultra-high purity of PBN ensures minimal contamination, making it essential for MBE, MOCVD, and other advanced material fabrication processes. Additionally, its ability to maintain structural integrity in extreme environments makes it a preferred material for crucibles, evaporation sources, and precision components in demanding industries.
Properties
Ultra-high purity (99.999%, 5N grade).
No outgassing at high temperatures.
Uniform thickness for consistent heating performance.
High thermal stability and thermal shock resistance.
Good mechanical integrity, easy to clean and reusable.
Highly chemically inert, resistant to acids, alkalis, and solvents at high temperatures.
Data Sheet
| ltem | Unit | Technical Parameter |
| Purity | % | >99.999 |
| Color | - | lvory |
| Density | g/cm³ | 1.95-2.22 |
| Lattice constant | m | a: 2.5x10-10 c: 6.8x10-10 |
| Tensile Strength | Mpa | 40 |
| Flexural Strength | Mpa | 80 |
| Thermal Conductivity @200°C | W/mk | a:82.3 c:2.6 |
| Thermal Conductivity @900°C | W/mk | a:55.3 c:2.8 |
| Thermal Expansion Coefficient | 10-6/K | 2(a) |
| Max. workable temperature@Air condition | °C | 900 |
| Max. workable temperature@Vacuum condition | °C | 2000 |
| Max. workable temperature@Inert gas protection | °C | 2200 |
| Dielectric Constant (10GHz) | - | a:5.2 c:3.8 |
| Dielectric Strength | KV/mm | 56 |
| Electrical Resistivity | Ω.cm | >1015 |
Applications
Crucibles for in-situ growth of III-V semiconductor single crystals (GaAs, InP, GaP, etc.).
Crucibles and boats for the growth of III-V single and polycrystals.
Crucibles and evaporation sources for molecular beam epitaxy (MBE) and OLED processing.
IPBN-coated graphite heaters and components for high-temperature applications.
Insulating components for high-temperature vacuum furnaces.
High-temperature insulating nozzles.
PBN insulation boards for MOCVD systems.
High-temperature electrical insulation parts.
Crucibles for specialized metallurgical applications.
Related Products
| >PBN Crucible | >PBN Washer | >PBN Boat |
