Pyrolytic Boron Nitride Plate
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Pyrolytic Boron Nitride Plate is a high-purity, anisotropic ceramic material synthesized via chemical vapor deposition (CVD). It is characterized by its exceptional thermal stability (up to 2000°C in inert atmospheres), high thermal conductivity in the deposition plane, and excellent electrical insulation. PBN exhibits outstanding chemical inertness, resisting attack from most molten metals, salts, and acids. Furthermore, it is ultra-high vacuum (UHV) compatible and has very low outgassing. NexusX Advanced Mateirals, as a premier manufacturer and supplier of high-quality pyrolytic boron nitride products, focuses on producing high-precision pyrolytic boron nitride plates for diverse application fields.
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Pyrolytic Boron Nitride Plate Data Sheet
| Purity: | 99.99%-99.999% |
| Color: | White |
| Density: | 1.95-2.20 g/cm3 |
| Production Method: | CVD |
Pyrolytic Boron Nitride Plate Descriptions
Pyrolytic Boron Nitride (PBN) plates, sheets, and discs are high-performance ceramic components manufactured through a chemical vapor deposition (CVD) process, resulting in a material of exceptional purity and highly anisotropic crystalline structure. These components exhibit outstanding thermal stability, capable of operating in inert or vacuum environments at temperatures exceeding 2000°C, while maintaining superb electrical insulation and high thermal conductivity within their deposition plane. They are characterized by remarkable chemical inertness, resisting corrosion from molten metals, halogens, and most aggressive reagents, and are ultra-high vacuum (UHV) compatible with minimal outgassing. This unique combination of properties makes PBN in plate, sheet, or disc form an essential material for demanding applications including semiconductor manufacturing processes like molecular beam epitaxy (MBE) as crucibles and substrates, as high-temperature furnace elements such as heaters, insulators and thermal shields, and in specialized settings as windows for plasma and microwave systems.
Pyrolytic Boron Nitride Plate Specifications
| Item | Value | |
| Lattice Constant | a: 2.504×10-10 μm c: 6.692×10-10 μm | |
| Density | 2.0-2.19 g/cm3 | |
| Resistivity | 3.11×1011 Ω·cm | |
| Tensile Strength (ab) | 153.86 N/mm2 | |
| Bend Strength | c | N/mm2 |
| ab | 197.76 N/mm2 | |
| Elastic Modulus | 235690 N/mm2 | |
| Thermal Conductivity | (200°С) | W/m·k |
| (900°С) | “a” direction: 43.70 W/m·k “c” direction: 2.80 W/m·k | |
| Dielectric Strength (at room temperature) | 56 KV/mm | |
Pyrolytic Boron Nitride Plate Advantages
- Extreme Thermal Stability: Operates continuously above 2000°C in inert/vacuum.
- High Thermal Conductivity: Excellent in-plane heat dissipation.
- Superb Electrical Insulation: High dielectric strength even at elevated temperatures.
- Outstanding Chemical Inertness: Resists molten metals, salts, and corrosive gases.
- Ultra-High Vacuum (UHV) Compatibility: Very low outgassing and high purity.
- Strong Mechanical Anisotropy: Properties differ between the deposition plane and cross-plane directions.
- Excellent Machinability: Can be precision-machined into complex shapes.
Pyrolytic Boron Nitride Plate Applications
- Semiconductor & Crystal Growth: Crucibles, heaters, and substrates for Molecular Beam Epitaxy (MBE) and other high-purity processes.
- High-Temperature Furnaces: Insulators, radiation shields, susceptors, and heating elements for vacuum and inert atmosphere furnaces.
- Aerospace & Plasma Technology: Windows for plasma sources, ion thrusters, and microwave applications due to its dielectric properties.
- Metallurgy & Materials Processing: Containers and linings for melting, sintering, or processing reactive metals and specialty alloys.
- Analytical Equipment: Sample holders and furnace components in thermal analysis instruments (e.g., TGA, DSC) and mass spectrometers.
- Optoelectronics: As a key component in the manufacturing of LEDs and laser diodes.
Pyrolytic Boron Nitride Packaging
Pyrolytic Boron Nitride Ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination, and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.
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- SAFETY DATA SHEET (SDS) -Pyrolytic Boron Nitride Plate
FAQ
What is Pyrolytic Boron Nitride (PBN) and how is it made?
Pyrolytic Boron Nitride is a high-purity, anisotropic ceramic material produced by a Chemical Vapor Deposition process at high temperatures, which gives it a unique layered crystal structure.
What are the key properties and advantages of PBN plates/sheets?
Key advantages include: extreme thermal stability (>2000°C), high thermal conductivity (in-plane), excellent electrical insulation, outstanding chemical inertness, and very low outgassing.
How is PBN different from Hot-Pressed Boron Nitride?
PBN is a high-purity, anisotropic, binder-free dense material made by CVD. HPBN is isotropic, powder-sintered with binders, and generally has lower purity and performance than PBN.
Is PBN resistant to acids and molten metals?
Yes, PBN is highly chemically inert. It resists attack from most acids, bases, molten metals (e.g., Al, Ga, Si), and halogen gases.
Why is PBN so popular in Ultra-High Vacuum systems?
Due to its high purity, dense structure, and extremely low outgassing rate even at high temperatures, it does not contaminate the vacuum environment, making it ideal for high-purity applications like MBE.
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