PBN0923 Pyrolytic Boron Nitride (PBN) Tubes

Catalog No. PBN0923
Size 1cm ~20cm
Material PBN, Pyrolytic Boron Nitride
Purity 99.99%

Pyrolytic Boron Nitride (PBN) Tube has a much better purity level and density than normal boron nitride ceramics. Stanford Advanced Materials provide Pyrolytic Boron Nitride Tubes with high purity and competitive price. Custom manufacturing with a small order quantity is available.

Related products: High Purity Boron Nitride Plates/Discs, Boron Nitride Nozzle, PBN Machined Products

 

Pyrolytic Boron Nitride Tubes Description

Pyrolytic Boron Nitride (PBN) Tube has a much better purity level and density than normal boron nitride ceramics. 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, Pyrolytic Boron Nitride is the ideal product 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.

pyrolytic-boron-nitride-tubes

 

Pyrolytic Boron Nitride Tubes Specification

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

 

Pyrolytic Boron Nitride Tubes Applications

Pyrolytic Boron Nitride Tubes can be used as:

 

Pyrolytic Boron Nitride PBN Tubes Properties

* 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 provides pyrolytic graphite (PG) products. Click here or send an inquiry for more information. 

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