PBN (Pyrolytic Boron Nitride) is an anisotropic, high temperature ceramic, which exhibits a unique combination of high electrical resistance and good thermal conductivity.
This inert, non-porous compound is exceptionally pure by virtue of its synthesis process (high temperature/low pressure chemical vapour deposition).
We can supply at very competitive prices. PBN crucibles are not stocked items, delivery is usually 14 to 30 days. We have a minimum order number of 4 items of any single size.
TYPICAL PROPERTIES OF PYROLYTIC BORON NITRIDE
Apparent Density, gm/cc: | 1.95 – 2.22 |
Tensile Strength, MPa (psi) | 40 (6000) |
Flexural Strength, MPa (psi) | 80 (12,000) |
Thermal Conductivity, W/moC ‘ab’ 60, ‘c’ 2 CTE, mm/mm/oC (1000oC) ‘ab’ | 2 x 10-6 |
Resistively, ohm-cm | 1015 |
Dielectric Strength, D.C. volts/mm | 2 x 105 |
Dielectric Constant ‘ab’ 5.2, ‘c’ | 3.4 |
Total Metallic Impurities, ppm | < 100 |
Outgassing | Negligible |
Max. Suggested use (oC) | 2500 |