Both PBN and graphite are machinable materials, and we offer customized products using Pyrolytic Boron Nitride Coated Graphite materials. These products include trays, furnace components, heating elements, evaporation tanks, rods, bars, plates, tubes, and more. For customized PBN products, please send us a drawing with all the details.

Pyrolytic boron nitride ceramics are prepared by the CVD process (Chemical Vapor Deposition), where all boron nitride crystals are grown parallel to the surface on which they are deposited in the vapor phase. PBN is also known as Chemical Vapor Deposition Boron Nitride.

Properties The properties of PBN, its inherent purity, excellent mechanical strength, 

and thermal stability make it an excellent choice for high-temperature furnaces and electrical components; microwave and semiconductor components; and industry-standardized crucibles for gallium arsenide crystal production.

Pyrolytic Boron Nitride Performance

-Good thermal conductivity

-High insulation resistance

-High dielectric strength over a wide temperature range.

-extremely pure

-non-wetting

-non-toxic

-non-reactive with most other compounds

-Withstands high temperatures and rapid cooling

PBN does not react with acids, alkalis, organic solvents, molten metals, or graphite. Bulk impurities are less than 100 parts per million and metallic impurities are less than 10 parts per million. It withstands 1800°C in vacuum and 2000°C in nitrogen and has no melting point, making it an excellent choice for furnace components and melting vessels. Crucibles heated to 1200° C can be immersed in liquid nitrogen without causing visible damage. PBN-coated graphite heating elements provide extremely uniform temperature distribution for compound and silicon semiconductor manufacturing.

Performance PBN’s anisotropic conductivity improves process performance for crystal growth, whether the growth method is Liquid Encapsulated Czochralski (LEC), Vertical Gradient Freeze (VGF), or Bridgeman. The high purity and physical stability of this unique material also make it an excellent choice for use as auxiliary percolation cell hardware.

Applications

PBN ceramic from Edgetech Industries Ceramics Division can withstand high temperatures in a high vacuum environment, plus it has excellent corrosion resistance and electrical resistance. Thus, Boron Nitride ceramic product is an ideal choice in a wide range of industries, such as:

-high-temperature furnaces and electrical components

-microwave and semiconductor components

-industry-standardized crucibles for gallium arsenide crystal production

Packing

As a ceramic material, boron nitride is quite fragile in a lot of cases. Our PBN Coated Graphite Product is carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used for PBN products, vacuum packing is also engaged for some of the parts.