PBN/PG Heater-Heeger Materials Inc View larger

PBN/PG Heater

New product

With ultra-fast response and low thermal mass, the PBN/PG Heater shows a power output of 35 watts/cm 2 (225 watts/in 2) and higher. Custom sizes, please let me know the operating temperature, current, and voltage.

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Data sheet

Purity 99.99%-99.999% (4N-5N)
Size 0.5 - 5 inch
Production Method CVD

More info

The PBN/PG ceramic heater combines three layers of ultra-high purity ceramics, PBN-PG-PBN. the PBN acts as the insulating substrate and the PG acts as the resistive element. Our PBN heaters (pyrolytic boron nitride) and PG heaters (pyrolytic graphite) are manufactured by high-temperature CVD. These high-performance elements exhibit excellent thermal properties in ceramic heaters, including high thermal conductivity and anisotropy.

High purity 99.99% PBN pyrolytic boron nitride ceramic part

Hexagonal Boron Nitride has a microstructure similar to that of Graphite. In both materials, this structure, made up of layers of tiny platelets, is responsible for excellent machinability and low-friction properties. we called hexagonal boron nitride (HBN) or white graphite.
Hot pressed BN is compacted at temperatures up to 2000°C and pressures up to 2000 psi to form a dense, strong engineering material that is easily machined. It is available in standard and custom hot pressed shapes and has several unique characteristics and physical properties which make it valuable for solving tough problems in a wide range of industrial applications.

PBN/PG HeaterCcharacteristic

  1. High purity, 99.999%
  2. Fast temperature increase rate, 200℃ / min
  3. Corrosion resistance, no powder and no gas release at high temperature
  4. The small temperature difference in the temperature area and long service life
  5. Customized production design can be realized

Item

Unit

 PBN Ceramic Part

Apparent Density

g/cm3

2.15-2.19

Gas permeability(He)

cm3/s

<1*10-10

Microhardness(Knoop)

N/mm2

691.88(a-b plane)

Tensile strength

N/mm2

153.86(parallel)

Bending strength

N/mm2

243.63(parallel)

197.76(parallel)

Modulus of elasticity

N/mm2

235690

Specific heat capacity

Cal/g.

0.371(@ 200℃)

0.442(@ 900℃)

Thermal conductivity 200

W/cm.k

0.6(parallel)

0.026(perpendicular)

Thermal conductivity 900

W/cm.k

0.4370(parallel)

0.028(perpendicular)

Dielectric Strength(RT)

KV/mm

56

Volume Resistivity

Cm

3.11*1011

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