Pyrolytic Boron Nitride (PBN)
Uniform wall thickness (circumferential direction)
Easily adjustable thickness (axial direction)
High thermal conductivity
Low thermal expansion
Excellent thermal shock resistance
High electrical resistance
Low dielectric constant and loss tangent
Good chemical resistance
High compositional homogeneity
Minimal out gassing at high temperature and vacuum
Crucibles & boats for crystal growth of
Semiconductor wafer processing equipment
Pyrolytic Boron Nitride (PBN) is an anisotropic, high-temperature ceramic which exhibits a unique combination of high electrical resistance and good thermal conductivity.
This non-toxic, non-porous compound is exceptionally pure by virtue of the synthesis process (high temperature/low pressure chemical vapour deposition).
It can be deposited or easily machined into a limitless number of components.
PBN's directional thermal conductivity provides excellent 'heat spreading' capability for improved temperature uniformity.
With its high strength, good thermal conductivity, and a low coefficient of thermal expansion this makes the material extremely resistant to thermal shock.
PBN has found wide acceptance in the semiconductor, electronics, metallurgical, thin film, and pharmaceutical industries.