Pyrolytic Boron Nitride Plates Description
Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has raw materials with much higher purity level. Pyrolytic boron nitride plates, discs 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 (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 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.
Pyrolytic Boron Nitride Plates Properties
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 |
thermal 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 |
Please notice, as a CVD material, pyrolytic boron nitride plates & discs could not be very thick. The largest thickness available for our PBN plate & disc is 0.2". We also provide PBN crucibles, tubes, and heating elements!
Pyrolytic Boron Nitride Plates Applications
Pyrolytic boron nitride plate is an ideal choice in a wide range of industries, such as:
-Electric insulators in the vacuum system
-Boron Nitride components for PVD, MOCVD, MBE system.
-Nozzles for nonferrous metals metallurgy industry
-Spacers for glass melting
-Insulators for high-temperature furnace
Pyrolytic Boron Nitride Plates Packing
Our pyrolytic boron nitride plates & discs are wrapped in foam and packaged in plywood cases to ensure safe storage and transportation.
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