Pyrolytic Boron Nitride

Pyrolytic Boron Nitride (PBN) is a white solid material that is non-porous, and non-toxic. Whilst Boron Nitride can be formed by pressing/sintering methods, the high purity pyrolytic material is formed by a vapour deposition process. The material is highly anisotropic in its electrical and mechanical properties, and very resistant to thermal shock. PBN is also a very good electrical insulator and has very high thermal conductivity. The material is stable in inert and reducing atmospheres up to 2800°C, and in oxidizing atmospheres to 850°C. 

Typical characteristics include:

• High thermal conductivity
• Low thermal expansion
• Excellent thermal shock resistance
• High electrical resistance
• Low dielectric constant and loss tangent
• Good chemical resistance

Typical applications include:

• Electrical insulation
• Heating elements
• Crucibles & boats for crystal growth of semiconductor materials
• Semiconductor wafer processing equipment