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and Glass Components

Boron Nitride

Boron nitride exhibits a hexagonal structure and is sometimes known as white graphite, due to its lubricity, anisotropic properties, heat resistance, and high thermal conductivity. This latter property, combined with a low thermal expansion, leads to excellent resistance to thermal shock. All three forms, hot pressed, pyrolytic and hot isostatic pressed, can be used at very high-temperatures. However, in an oxidizing atmosphere the maximum use temperature is 850-900°C. Hot pressed and hot isostatic pressed boron nitride are produced by densification of powder, whereas pyrolitic boron nitride is produced by chemical vapor deposition (CVD), depositing onto graphite at temperatures in excess of 1800°C.

Characteristics of boron nitride include:

  • Excellent lubricating properties
  • Hot pressed boron nitride (HPBN) can be machined using traditional metal turning techniques.
  • If used in an inert environment the surface of HPBN will not be wetted by molten metals, glasses and salts and hence has a high resistance to chemical attack.
  • Good chemical inertness
  • High volume resistivity
  • High dielectric breakdown strength

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Buy standard Boron Nitride products online

Goodfellow also offers a range of standard, semi-finished forms in our online catalog. To see our catalog, please follow the link below.

Boron Nitride (BN)

Wurtzite Boron Nitride (w-BN)

The links below provide comparative physical, mechanical, thermal, electrical and chemical properties for a range of typical ceramic/glass materials. If the material or property you are interested in is not shown please call us or send us a message.

Ceramic PDF Data Table

Goodfellow Ceramic and Glass Division is able to supply a wide range of ceramic and glass materials as finished components. Our capabilities range from custom-made precision microcomponents with very high tolerance features to large heavy-duty components used in industrial applications. Additionally, standard semi-finished forms such as tubes, rods, bars, plates, crucibles and spheres are often available from our wide inventory. Please contact us with full details of your requirements, including drawings where available, and we will review and respond with a quotation as soon as possible.