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PBN Heater, Pyrolytic Boron Nitride Heaters

PBN Heater, Pyrolytic Boron Nitride Heaters

Pyrolytic Boron Nitride (PBN) heaters are high-temperature heating elements used in various applications such as semiconductor manufacturing, crystal growth, and advanced materials processing. PBN heaters are made from pyrolytic boron nitride material which is deposited in a high-temperature chemical vapor deposition process.

PBN heaters have excellent thermal stability and high-temperature resistance, making them ideal for use in harsh environments. They can reach temperatures up to 2000°C in vacuum and 1700°C in air. PBN heaters also have excellent chemical stability, low thermal conductivity, and low dielectric constant.

PBN heaters come in various shapes and sizes, including rods, tubes, and custom-designed shapes. They can be used in both horizontal and vertical orientations, making them suitable for a wide range of applications. PBN heaters can also be coated with other materials such as platinum for enhanced performance in specific applications.

Boron Nitride Ceramics Specification

CG Material production formulations are developed to address the varied application problems in which ceramic components are commonly used. Many industrial applications push the envelope on specific requirements leading to the development of new formulations to successfully address them.

Item No. Description Purity Lot Size
CG-NI05-98 Boron Nitride Powder
Particle Size: 3 µm, 200 mesh or 325mesh
BN > 98 %,
B2O3 < 0.6%,
Ca < 0.015%,
Si < 0.12%
100 kg
CG-NI05-99 Boron Nitride Powder
Particle Size: 3 µm, 200 mesh or 325mesh
BN > 99 %,
B2O3 < 0.4%,
Ca < 0.01%,
Si < 0.10%
100 kg

Comparison of Boron Nitride Ceramics

Compositions BN>98% BN+SiC+ZrO2 BN+AIN
Binder B2O3 / AlBO3
Density 2.1-2.2 g/cm3 2.3-3.0 g/cm3 2.5-2.6 g/cm3
25°C Volume Resistivity >1013 Ω·cm >1012 Ω·cm >1014 Ω·cm
Max. Service Temp. (°C)
Inert Gas;
High Vacuum










Flexural Strength 75 Mpa 100 Mpa 130 Mpa
Compressive Strength 100 Mpa 300 Mpa 250 Mpa
Coefficient of Thermal Expansion
2.0 x 10–6/K 4.0 x 10–6/K 4.5 x 10–6/K
Thermal Conductivity 30 W/mK 40 W/mK 60 W/mK


PBN 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 Heater Applications

Boron Nitride ceramic from CG Material 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


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.


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