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High Purity Boron Nitride Plates / Discs

Catalog No.CO0304
SizeThikness: 0.5mm~4mm
MaterialPBN, Pyrolytic Boron Nitride
Purity99.99%

Stanford Advanced Materials provide our customers with high purity 99.99% PBN plate and disc as your high puity source for boron nitride. Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has much better purity level and higher density. Custom manufactruing is alwyas available.

More details

 Please notice, as a CVD material, pyrolytic boron nitride sheets could not be very thick. The largest thickness available for our PBN sheet is 0.2".

 

We also provide PBN crucibles, tubes, and heating elements!

Below is typical PBN crucibles.

Product

Available size

 Liquid Encapsulated Czochralski, 

PBN LEC crucibles

50ml~5L

Molecular Beam Epitaxy,

PBN MBE crucibles

5ml~300ml

Vertical Gradient Freeze,

PBN VGF crucibles

0.2L~5L

 

 Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has raw materials with much higher purity level. PBN sheets, discs 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(99.99%), 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. With such a high purity level, PBN plates are ideal products for semiconductor industries.  

Similar with graphite, boron nitride has great strength at high temperature. High purity PBN products have even better mechanical properties. As the solid material is formed by CVD process, 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 degree and dropped in to water without get broken.

Material Properties

Structure of pyrolytic boron nitride and graphite

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


 

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



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