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PBN0923 Pyrolytic Boron Nitride (PBN) Tubes Maximize

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PBN0923 Pyrolytic Boron Nitride (PBN) Tubes

Catalog No.PBN0923
Size1cm ~20cm
MaterialPBN, Pyrolytic Boron Nitride
Purity99.99%

Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has a much better purity level and density. Stanford Advanced Materials provide PBN crucibles with high purity and competitive price. We offer tubes, sheets, LEC crucibles, MBE crucibles, VGF crucibles and other products made by a CVD process with PBN material. Custom manufacturing with small order quantity is available.

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Introduction of Pyrolytic Boron Nitride (PBN) Tubes

Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has a much better purity level. PBN crucibles and other pytolytic 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 of PBN products made from CVD process have 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.  

Similar to graphite, boron nitride has great strength at high temperatures. High purity PBN products have even better mechanical properties. As the solid material is formed by the CVD process, the density of the products could almost reach the theoretical value. PBN products provided by Stanford Advanced Materials also have great thermal shock resistance. Plates of PBN could be heated to more than 2000 degrees and dropped into the water without getting broken.

Resistant to thermal shock, pyrolytic boron nitride excels as a sealant and protects graphite from corrosive atmospheres including most molten metals, acids, and hot ammonia environments. Pyrolytic boron nitride also proves extremely effective as an electrical insulator.

Material Properties of Pyrolytic Boron Nitride (PBN) Tubes

Structure of pyrolytic boron nitride and graphite

Specification of Pyrolytic Boron Nitride (PBN) Tubes

Item

value

Unit

lattice constant

a:2.504×10-10     c:6.692×10-10

μ m

density

2.0-2.19

g/cm3

resistivity

3.11×1011

Ω·cm

tensile strength(ab)

153.86

N/mm2

bend strength

c

243.63

N/mm2

ab

197.76

N/mm2

elastic modulus

 

235690

N/mm2

Thermo conductivity

 

“a” direction    “c” direction

 

(200℃)

60                  2.60

W/m·k

(900℃)

43.70             2.80

W/m·k

dielectric strength(at room temperature)

56

KV/mm

 

Potential applications for pyrolytic boron nitride include:

  • Compound semiconductor crystal growth
  • Wafer processing
  • Electronic assembly
  • Metallurgical applications
  • Thin film manufacturing


Some properties featured in our Performance PBN include

  • Good thermal conductivity (thermal stability)
  • High insulation resistance
  • High dielectric strength over wide temperature ranges.
  • Extremely pure
  • Non-wetting
  • Non-toxic
  • Non-reactive to most other compounds
  • Withstands high temperatures and rapid cooling
  • High electrical resistance

Stanford Advanced Materials also provide pyrolytic graphite(PG) products. Click here or send an inquiry for more information.



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