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PBN0922 Pyrolytic Boron Nitride Crucible (PBN Crucible)

PBN Crucible Properties

Pyrolytic Boron Nitride (PBN) Crucibles

Compound Formula BN
Molecular Weight 24.82
Appearance Black solid in various forms
Melting Point 2973 °C
Density 2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN)
Solubility in H2O Insoluble
Refractive Index 1.8 (h-BN); 2.1 (c-BN)
Electrical Resistivity 13 to 15 10x Ω-m

 

Boron-Nitride-sds

 

 Download Boron Nitride SDS 

Pyrolytic Boron Nitride Description

Compared with normal boron nitride ceramic, pyrolytic boron nitride (PBN) has much better purity level. PBN crucibles 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, 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, which means the purity is better than 99.99%. With such a high purity level, PBN crucibles 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, the density of the products could almost reach the theoretical value. PBN products provided by Advanced Ceramic Materials also have great thermal shock resistance. Plates of PBN could be heated to more than 2000 degree and dropped into the water without getting broken.

Related: An overview of Pyrolytic Boron Nitride (PBN)

Pyrolytic Boron Nitride Specification

PBN Material 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

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

 

PBN Crucible Applications

Pyrolytic Boron Nitride Crucible from Advanced Ceramic Materials can withstand high temperature in 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:
– Crucibles for crystal growth
– Break rings for horizontal casting machine
– Insulators for high temperature furnace
– Electric insulators in vacuum system
– Feed through for high voltage equipment

Packing Service

ACM’s 99.99 purity PBN Crucibles are carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

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Pyrolytic Boron Nitride (PBN) Crucibles
Average rating:  
 2 reviews
by Tony Williamson on Pyrolytic Boron Nitride (PBN) Crucibles

Worked great for me. I melted down a bunch of scrap copper wire from old TVs in it with a mapp gas torch. It held up great, No cracking for an hour of being heated and didn't leave any ash residue/impurities on the copper. i would describe the size as economical, which is what I was looking for.

by Adam Gimp on Pyrolytic Boron Nitride (PBN) Crucibles
Very good quality. Heats up evenly. Great for aluminum.

This crucible is just the right size for a homemade foundry. We've been able to do dozens of aluminum melts using charcoal with no undue wear on the crucible. It looks like it will hold up for a good while.