CG MATERIAL
PBN Sheet, Pyrolytic Boron Nitride Sheet
PBN Sheet, Pyrolytic Boron Nitride Sheet
Pyrolytic Boron Nitride Sheet, also known as PBN Sheet, is a type of boron nitride ceramic material that is produced through chemical vapor deposition (CVD) process. It has a unique layered structure and high purity, making it ideal for various high-temperature applications.
PBN Sheet has excellent thermal and electrical properties, high thermal stability, and low coefficient of thermal expansion. It can withstand temperatures up to 1800°C in an inert atmosphere and up to 1400°C in air. Its high purity and low outgassing make it suitable for use in vacuum and cleanroom environments.
PBN Sheet can be machined to different shapes and sizes to meet specific requirements. It is commonly used in industries such as aerospace, semiconductor, and nuclear where high-temperature stability, electrical insulation, and purity are crucial. Applications of PBN Sheet include insulation components, crucibles, heating elements, and protective coatings.
Comparison of Boron Nitride Ceramics
| Grade | BN-BO | BN-SZ | BN-AlN |
| Compositions | BN>98% | BN+SiC+ZrO2 | BN+AIN |
| Binder | B2O3 | / | AlBO3 |
| Density | 2.1-2.2 g/cm3 | 2.3-3.0 g/cm3 | 2.5-2.6 g/cm3 |
| 25°C Volume Resistivity | >1013 Ω·cm | >1012 Ω·cm | >1014 Ω·cm |
| Max. Service Temp. (°C) Oxygen; Inert Gas; High Vacuum |
900 2000 1800 |
900 1700 1700 |
900 2100 1900 |
| Flexural Strength | 75 Mpa | 100 Mpa | 130 Mpa |
| Compressive Strength | 100 Mpa | 300 Mpa | 250 Mpa |
| Coefficient of Thermal Expansion 25-1000°C |
2.0 x 10–6/K | 4.0 x 10–6/K | 4.5 x 10–6/K |
| Thermal Conductivity | 30 W/mK | 40 W/mK | 60 W/mK |
PBN Sheet Properties
| Compound Formula | BN |
| Molecular Weight | 24.82 |
| Appearance | White |
| Melting Point | 2973 °C |
| Density | 2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN) |
| Solubility in H2O | Insoluble |
| Refractive Index | 1.8 (h-BN); 2.1 (c-BN) |
| Electrical Resistivity | 13 to 15 10x Ω-m |
PBN Sheet Applications
Boron Nitride ceramic from CG Material can withstand high temperature in high vacuum environment, plus it has excellent corrosion resistance and electrical resistance. Thus, Boron Nitride ceramic product is an ideal choice in a wide range of industries, such as:
– Crucibles for crystal growth
– Break rings for horizontal casting machine
– Insulators for high temperature furnace
– Electric insulators in vacuum system
– Feed through for high voltage equipment
Packaging
We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.
