Pyrolytic Boron Nitride LEC Crucible | PBN crucible
Material: Pyrolytic Boron Nitride /PBN
Production process: CVD
Purity: >99.99%
Supplier: QSAM
Chemical content of QSAM PBN crucible
Pysical properties of QSAM PBN crucible
- Product Details
Pyrolytic Boron Nitride (PBN) crucible
is produced by CVD process (chemical vapor deposition) to create its solid body and all the boron nitride crystals grow parallel to the surface of which the vapor is deposited on. Due to the nature of CVD process, thick wall products (>3mm) is usually not available. PBN is also a good choice for extremely high purity boron nitride. As the purity of gas material (BCl3 + NH3 --> BN +HCl) is a lot higher than regular boron nitride powder, purity for PBN is quite high and 99.99% is the typical grade. With it's high purity, high mechanical strength, high performance with molten metal and salts, PBN is becoming an widely used material in high vacuum processes. Without showing melting point and high thermal conductivity, pyrolytic material are ideal to be used as vacuum furnace parts. The CVD process give this pyrolytic boron nitride almost perfect layered structure, which leads to anisotropic thermal conductivity, making it an ideal material to make crucibles for crystal growing. PBN LEC crucible are basically a simple cylinder shape crucible used in LEC (Liquid encapsulation czochralski) crystal growth facility.
The pyrolytic boron nitride plates QSAM could supply, are cut from 1mm 2mm or 3mm thick PBN discs with about 10~14" diameter. The diameter of raw material PBN was limited by equipment size but the finished PBN products could be machined to highly customized shape with competitive cost.
List Of PBN Products QSAM supplies
| PBN Disc/Sheet/Ring |
| PBN Machined Products and Custom Parts |
PBN LEC crucible Packaging
As a ceramic material, boron nitride is quite fragile in a lot of cases. The PBN LEC crucibles are usually hold in plastic bags by vacuum, and protect with heavy foam.
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