PBN0923 Pipes produced from pyrolytic boron nitride (PBN)

Pyrolytic Boron Nitride (PBN) Tubes Description

Pyrolytic Boron Nitride Tubes are synthesised on the mould by the CVD process, with BCl3 and NH3 at high temperature and low pressure. PBN products are extremely pure (99.99% or even higher) and very stable in a vacuum or inert atmosphere. They feature anisotropic thermal conductivity, making them an ideal material to make components for furnace & vacuum systems.

Pyrolytic Boron Nitride (PBN) Tubes Specifications

*The above product information is based on theoretical data. For specific requirements and detailed enquiries, please contact us.

Pyrolytic Boron Nitride (PBN) Tubes Applications

Pyrolytic Boron Nitride (PBN) Tubes are highly valued in various high-tech industries due to their exceptional thermal, chemical, and electrical properties. In the semiconductor industry, they are used in wafer processing equipment and as crucibles for crystal growth due to their high purity and stability. PBN tubes are crucial in LED manufacturing, particularly in MOCVD reactors, which withstand high temperatures and corrosive environments. Aerospace and defence sectors utilise PBN tubes for their excellent thermal and electrical insulation properties. In high-temperature furnaces, PBN tubes serve as heating elements and insulation materials, enduring extreme temperatures without degrading. They are also essential in chemical processing industries, providing stability in corrosive environments. Optical and laser systems benefit from PBN tubes as lens supports and holders, maintaining precision and performance. In electronics, PBN tubes are used as insulators and substrates due to their dielectric properties and thermal conductivity. Analytical equipment, such as mass spectrometers, relies on PBN tubes for their purity and stability. Vacuum systems use PBN tubes for their low outgassing and high thermal stability. Additionally, the medical and pharmaceutical industries employ PBN tubes in implantable devices and lab equipment for their biocompatibility and resistance to sterilisation. The versatility and critical role of PBN tubes in these applications underscore their importance in advanced technological processes.

Pyrolytic Boron Nitride (PBN) Tubes Packaging

Our products are packaged in customised cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customisation and the use of appropriate cushioning materials to provide optimal protection during transportation.

FAQs

Q1: What is a Pyrolytic Boron Nitride (PBN) tube?
A: A PBN tube is a hollow cylindrical component made from pyrolytic boron nitride via chemical vapour deposition (CVD). It offers exceptional thermal stability, high purity, and excellent resistance to corrosion, making it ideal for high-temperature and high-vacuum applications.

Q2: What are the key properties of PBN tubes?
A:

High purity (typically >99.9%)

Thermal stability up to 1800°C in vacuum, and up to 2000°C in inert gas

Excellent electrical insulation

High thermal conductivity (especially in-plane)

Non-wettable to most molten metals

Chemically inert to most acids, alkalis, and gases

Q3: What are the typical applications of PBN tubes?
A:

Insulating sleeves in high-temperature vacuum systems

Protective liners and gas transport tubes in semiconductor processing

Components in crystal growth equipment (e.g., MBE, MOCVD, CVT systems)

Dielectric containers in corrosive or ultra-clean environments

Thermal insulators in aerospace, defence, or laboratory setups

Q4: How are PBN tubes manufactured?
A: PBN tubes are made through a CVD process, in which boron and nitrogen gases react at high temperatures to deposit dense PBN layer-by-layer onto a mandrel, ensuring fine-grained, pore-free, and highly uniform microstructure.