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PBN0953 Pyrolytic Boron Nitride Heaters (PBN/PG Heater)

PBN/PG Heater Properties

PBN PG Composite Heating Elements

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

 

 

PBN/PG Heater Description

High purity and high performance pyrolytic boron nitride is used as the substrate for the PBN heating element. Pyrolytic graphite(PG) is placed on the surface of PBN plates by CVD method as conductor and heater. Dependends on different requirements of applications, the PG heating element could be covered by PBN again or just stay open.

As both PG and PBN are extremely pure (99.99% or even higher) and very stable in vaccum or inert atmosphere, the PBN-PG heating element could be very durable and keep the chamber clean. It could be heated to 1600C in very short time without emmision of any gas component. These heating elements are ideal products for semiconductor industry and applications that requires high temperature, high vaccumn and high purity.

PBN Heating Elements

Diameter 0.5”~4”
Power 150~3000W
Max. Working Temp. 2400 `C

 

PBN/PG Composite Heating Element 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/PG Heater Advantages

  • PBN composite heating element has an operating temperature to = 1600°C.
  • High mechanical durability and dimensional stability.
  • Dimensionally compact. PBN layer provides electrical insulation.
  • Thermal gradients can be tailored to meet specific requirements.
  • Eliminate outgassing and contaminations.
  • High thermal shock resistance.
  • Chemically inert to almost all metals, liquids and gas.
  • Large variety of PG heater and PGN heater shapes available.

 

PBN/PG Heater Applications

Boron Nitride ceramic 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 PBN/PG Composite Heating Elements 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/PG Heaters)
Average rating:  
 1 reviews
by William Smith on Pyrolytic Boron Nitride (PBN/PG Heaters)

So much high quality for such a cheap price. Came exactly as described and good quality.