Boron Nitride (BN) Nanoparticles - Properties, Applications

Topics Covered

Introduction
Chemical Properties
Physical Properties
Thermal Properties
Manufacturing Process
Applications

Introduction

Thanks to the large amount of research work being carried out on nanoparticles, these particles are quickly being adapted for used in chemical, biological, and industrial areas. This article discusses the properties and applications of boron nitride nanoparticles. Boron is a Block P, Period 2 element, while nitrogen is a Block P, Period 2 element.

Boron nitride nanoparticles possess high thermal conductivity, and are a good conductor of heat. They are also a good electrical insulator, and have high-temperature lubricity features.

Boron nitride nanoparticles are graded as an irritant and could possibly causes serious eye irritation, and allergy or asthma symptoms or breathing difficulties if inhaled.

Boron nitride nanoparticles should be sealed in vacuum and stored in cool and dry room so as to avoid damp reunion as it would affect its dispersion performance and other usage effects.

Chemical Properties

The chemical properties of boron nitride nanoparticles are outlined in the following table.

Chemical Data
Chemical symbol BN
CAS No. 10043-11-5
Group Boron 13
Nitrogen 15
Electronic configuration Boron [He] 2s2 2p1
Nitrogen [He]2s2 2p3
Chemical Composition
Element Content (%)
Nitrogen 56.45
Boron 43.58

Physical Properties

The physical properties of boron nitride nanoparticles are given in the following table.

Properties Metric Imperial
Density 2.29 g/cm3 0.082 lb/in3
Molar mass 55.26 g/mol -

Thermal Properties

The thermal properties of boron nitride nanoparticles are provided in the table below.

Properties Metric Imperial
Melting point 2527°C 4580°F

Manufacturing Process

Boron nitride nanoparticles can be manufactured by using the spray-pyrolysis of borazine. The nanoparticles can be characterized using scanning electron microscopy (SEM).

Applications

The key applications of boron nitride nanoparticles are as follows:

  • In subsurface investigation, oil drilling and high-speed cutting tools
  • As a metal forming and metal drawing lubricant release agent
  • In transistors and as plastic resin sealing desiccant polymer additives
  • Pressed into various shapes and can be used as high temperature, high voltage, insulation, cooling components
  • As a special high-temperature electrolysis state, resistor material
  • In the aerospace industry, for use in heat shielding material
  • As a catalyst for high temperature, high pressure treatment
  • Mold release for die casting and injection molding
  • Thermally conductive filler for polymers
  • Composite ceramics
  • Starting material for hot-pressed BN parts
  • For high-voltage high frequency electricity, plasma arc's insulators, high-frequency induction furnace materials, semi-conducting solid phase admixtures, atom reactor's structure materials, automatic welding high-temperature coating, preventing neutron radiation's packing materials, radar antenna's mediums, radar's pass box, and rocket engine's components
  • As high-temperature lubricants
  • Mold pressing boron nitride can be used in making high-temperature crucible and other products.

Source: AZoNano
 

Date Added: Apr 5, 2013 | Updated: Jul 22, 2013
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