Pyrolytic Boron Nitride (PBN) Strip

PBN is becoming a widely used material in vacuum processes


Pyrolytic Boron Nitride Strip, PBN Strip


Pyrolytic Boron Nitride (PBN) Strip 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. PBN products are extremely pure, as the purity of gas material is easier to be controlled. Typically, PBN products have a total impurity of <100 ppm, which means the purity is no less than 99.99%. With such a high purity level, PBN strips are ideal products for semiconductor industries & vacuum system.

With its high density and purity, PBN is becoming a widely used material in vacuum processes. 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 components for furnace & vacuum system.

Due to the CVD process, the thickness for PBN products are usually <3mm. The pyrolytic boron nitride strip Edgetech could supply, are cut into 1mm, 2mm or 3mm thick PBN strips. The dimensions of raw PBN blank was limited by equipment, but the finished highly customized shape can be got from it at a competitive cost.


Pyrolytic Boron Nitride Specification



Lattice constanta:2.504×10-10μ m
Tensile strength (ab)153.86N/mm2
Bend strengthc243.63N/mm2
Elastic modulus235690N/mm2
thermo conductivity“a” direction“c” direction
Dielectric strength (at RT)56KV/mm


PBN Strip Applications


Pyrolytic Boron Nitride Sheet from Edgetech Industries Ceramics Division can withstand high temperature in high vacuum environment, it has excellent corrosion resistance and electrical resistance. Based on the above excellent properties, Boron Nitride Strip is an ideal choice in a wide range of industries, such as:

-Break rings for horizontal casting machine

-Insulators for high temperature furnace

-Feed through for high voltage equipment

-Electric insulators in the vacuum system

-Boron Nitride components for PVD, MOCVD, MBE system.

-Nozzles for nonferrous metals metallurgy industry

-Spacers for glass melting




As a ceramic material, boron nitride is quite fragile in a lot of cases. Our Pyrolytic Boron Nitride Strip 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.


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