Pyrolytic Boron Nitride Tube
  • Pyrolytic Boron Nitride TubePyrolytic Boron Nitride Tube
  • Pyrolytic Boron Nitride TubePyrolytic Boron Nitride Tube

Pyrolytic Boron Nitride Tube

Similar to graphite, boron nitride has great strength at high temperatures. High purity pyrolytic boron nitride products have even better mechanical properties.Nextgen Advanced Materials supplies Pyrolytic Boron Nitride Tube with high quality and fast delivery. Customization is available too.

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Product Description

As the professional manufacture, we would like to provide you high quality Nextgen Pyrolytic Boron Nitride Tube. And we will offer you the best after-sale service and timely delivery. Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has a much better purity level. PBN tubes and other pyrolytic boron nitride products are synthesized on the mold by chemical vapor deposition (CVD) process, with BCl3 and NH3 at high temperature and low pressure. The PBN products are extremely pure, as the purity of vapor is easier to be controlled. Most PBN products made from the CVD process have a total impurity of less than 100 ppm, which means the purity is better than 99.99%. With such a high purity level, PBN crucibles are ideal products for semiconductor industries.

Pyrolytic Boron Nitride Specification

Item Unit Value
Lattice constant μ m a:2.504×10-10
Density g/cm3 2.0-2.19
Resistivity Ω·cm 3.11×1011
Tensile strength (ab) N/mm2 153.86
Bend strength c N/mm2 243.63
ab N/mm2 197.76
Elastic modulus N/mm2 235690
Thermo conductivity “a” direction “c” direction
(200℃) W/m·k 60 2.6
(900℃) W/m·k 43.7 2.8
Dielectric strength (at RT) KV/mm 56

PBN Tube Properties

Item Parameter
Compound Formula BN
Molecular Weight 24.82
Appearance White
Melting Point 2973°C
Density 2.1 g/cm3(h-BN); 3.45 g/cm3(c-BN)
Solubility in H2O Insoluble
Refractive Index 1.8 (h-BN); 2.1 (c-BN)
Electrical Resistivity 13 to 15 10x Ω-m

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