Boron nitride tube is mainly used as insulating sleeves. Boron Nitride (BN), Hexagonal boron nitride (H-BN), and hot-pressed boron nitride are good self-lubricate ceramics that will withstand heat and maintain their lubricating capability during a high vacuum environment. Hexagonal boron nitride (H-BN) behaves almost like graphite mechanically, but it offers better electric resistance. The Boron Nitride Tubes (BN Tubes) from Heeger Materials are made up of hot-pressed boron nitride blank.

Boron Nitride Tube Advantages

• Low wettability to molten metal
• Low dielectric constant
• Relatively high dielectric strength
• Relatively high thermal conductivity with low thermal expansion
• Relatively high thermal shock resistance
• Extremely high working temperature with proper inert gas protection (>3000C has been recorded).
• Chemical Vapor Deposition (CVD)

Boron Nitride Tube Materials

Boron Nitride Tube Applications

Boron Nitride ceramic from Heeger Materials can endure heat within a high vacuum environment, plus it's chemically inert — excellent corrosion resistance and electric resistance. Therefore, Boron Nitride ceramic product is a perfect choice for a wide selection of industries, such as:

• Electric insulators in vacuum system
• Boron Nitride ceramic components for PVD, MOCVD, and MBE systems.
• Nozzles for the nonferrous metals metallurgy industry
• Spacers for glass melting
• Insulators for high-temperature furnace

Types of Hexagonal Boron Nitride Materials

• Pyrolytic boron nitride PBN: 99.99% boron nitride
• High purity boron nitride HPBN: >98.5% boron nitride + boron oxide
• Calcium Borate Boron Nitride CABN: >97.5% Boron Nitride + Calcium Borate
• Aluminum Nitride Boron Nitride ALBN: Boron Nitride + Aluminum Nitride + Boron Aluminum Oxide
• Zirconia Boron Nitride ZRBN: Boron Nitride + Zirconia + Boron Oxide
• Zirconium Aluminum Boron Nitride ZABN: Boron Nitride + Zirconia + Aluminum Nitride + Aluminum Boron Oxide
• Silicon carbide boron nitride SCBN: boron nitride + silicon carbide + boron silicon oxide

Boron Nitride Tube Targeted Market

• High-temperature furnace manufacturing
• Ceramic manufacturing semiconductor
• PVD coating
• Microwave etc.