Boron Nitride (BN) Powder – Diameter 5 µm, Purity: 99.8%

Description

Boron Nitride (BN) Powder – Diameter 5 µm, Purity: 99.8%

Boron Nitride (BN) Powder is a high-purity advanced ceramic material with a layered hexagonal structure similar to graphite. Known as “white graphite,” BN combines excellent thermal conductivity, electrical insulation, high-temperature stability, and lubricity. With a diameter of ~5 µm and thickness ranging from 80–300 nm, it offers outstanding performance for applications that demand both heat resistance and dielectric properties.

This BN powder is lightweight, chemically inert, and exhibits a very low coefficient of thermal expansion while maintaining exceptional thermal conductivity (700–758 W/m·K at room temperature). It remains stable up to 2800 °C in nitrogen or argon environments, making it ideal for extreme industrial conditions.

Technical Properties (COA)

• Purity: 99.8%

• Average Particle Size (APS): Diameter ~5 µm; thickness 80–300 nm

• True Density: 2.29 g/cm³

• Crystal Structure: Hexagonal (h-BN)

• Mohs Hardness: ~2

• Thermal Conductivity: 700–758 W/m·K (room temperature)

• Fe₂O₃: < 0.03%

• CaO: < 0.002%

• MgO: < 0.04%

• B₂O₃: < 0.1%

Key Features

• High chemical and thermal stability up to 2800 °C (in inert gases).

• Excellent thermal conductivity with strong electrical insulation.

• Low thermal expansion coefficient for dimensional stability.

• Acts as a solid lubricant with superior wear resistance.

• Lightweight, smooth, and easily dispersible powder.

Applications

Industrial Uses

• Super-hard materials in oil drilling, subsurface investigation, and cutting tools.

• Mold release agents for metal forming, die casting, and injection molding.

• High-temperature crucibles, refractory materials, and insulating coatings.

• Solid lubricants in extreme environments (aerospace, defense, automotive).

Electronics & Electrical Engineering

• High-voltage and high-frequency insulators for plasma arcs and semiconductors.

• Heat sinks and cooling components in electronic devices.

• Dielectric layers in microelectronics.

Energy & Aerospace

• Rocket engine components, radar materials, and aerospace heat shields.

• Nuclear and reactor components, serving as neutron shielding and thermal protection.

• Catalysis and high-pressure conversion to cubic BN (c-BN), a diamond-like material.

Other Applications

• Additive in composite ceramics and polymers for strength and thermal performance.

• Glass and plastic additives for enhanced thermal conductivity.

• Polymer fillers for heat-dissipating adhesives and coatings.