Boron Nitride Nanopowder (BN, 99.8+%, 70-80nm, hexagonal )

Boron nitride (BN) nanopowder is a high-purity material with a particle size range of 70–80 nanometers and a purity exceeding 99.8%. It is characterized by its hexagonal crystal structure (h-BN), which is often referred to as “white graphite” due to its similar layered structure and properties. Renowned for its thermal, electrical, and chemical properties, BN nanopowder is indispensable in applications requiring superior heat management, lubrication, and chemical stability.

Composition and Structure

BN (Boron Nitride):
Boron nitride exists in several polymorphs, with the hexagonal phase being the most common and technologically important. Hexagonal boron nitride features a layered structure where boron and nitrogen atoms form alternating planes. This structure provides exceptional thermal conductivity, electrical insulation, and lubricating properties, while also maintaining high chemical inertness.

Purity (99.8+%):
With a purity exceeding 99.8%, BN nanopowder ensures minimal contamination, critical for high-performance and precision applications. This level of purity enhances reliability in demanding environments.

Particle Size (70–80 nm):
The nanopowder size of 70–80 nm provides a large surface area, facilitating improved dispersion, thermal management, and surface interaction. At the nanoscale, BN exhibits properties distinct from its bulk form, including enhanced lubricating and thermal properties.

Properties

Thermal Conductivity:
Hexagonal boron nitride is an excellent thermal conductor, efficiently dissipating heat in applications such as electronic devices and high-temperature components.

Electrical Insulation:
Despite its high thermal conductivity, BN is a superb electrical insulator, making it ideal for applications that require thermal management without electrical conduction.

Lubrication:
The layered structure of h-BN provides low friction, making it an effective solid lubricant for applications in high-temperature and chemically reactive environments.

Chemical Inertness:
BN is highly resistant to chemical attack, even in corrosive environments, and can withstand exposure to strong acids, bases, and oxidizing agents.

High Thermal Stability:
BN retains its structure and properties at high temperatures, making it suitable for use in extreme thermal conditions.

Applications

1. Electronics and Thermal Management:

• Heat Sinks and Thermal Interface Materials: BN is used to manage heat in electronic devices, enhancing their performance and lifespan.
• Substrates and Insulators: Its combination of thermal conductivity and electrical insulation makes it ideal for electronic substrates and high-performance insulators.

2. Lubricants:

• High-Temperature Lubrication: BN nanopowder is used as a dry lubricant in aerospace, automotive, and industrial applications where liquid lubricants fail.
• Additives: It is incorporated into greases and oils to enhance their thermal stability and lubricating properties.

3. Advanced Ceramics and Composites:

• Ceramic Matrix Composites: BN improves the thermal shock resistance and mechanical performance of ceramics.
• Protective Coatings: Its chemical inertness and thermal stability make it a choice material for coatings in corrosive and high-temperature environments.

4. Aerospace and Automotive Applications:

• Thermal Shields: BN nanopowder is used in thermal protection systems for aerospace components.
• High-Performance Seals: Its lubricating and insulating properties are ideal for seals and gaskets in extreme environments.

5. Optoelectronics and Photonics:

• UV and IR Applications: BN’s transparency to ultraviolet and infrared radiation makes it useful in optical windows and lenses.

Safety and Handling

Health Considerations:
As with any nanopowder, BN should be handled with care to avoid inhalation or prolonged skin contact. Use personal protective equipment such as gloves, masks, and goggles during handling.

Environmental Impact:
Boron nitride is considered environmentally stable and non-toxic. Proper disposal practices should be followed to minimize any potential environmental impact.

Summary

Boron nitride nanopowder (BN, 99.8+%, 70–80 nm, hexagonal) is a high-performance material with outstanding thermal conductivity, electrical insulation, and chemical stability. Its hexagonal structure enhances its lubricating properties and thermal management capabilities, making it indispensable in electronics, aerospace, ceramics, and lubrication applications. With a high purity and nanoscale size, BN nanopowder offers tailored solutions for advanced industrial and technological needs.