PBN Coating

Pyrolytic boron nitride is an advanced inorganic non-metallic material produced through a pyrolysis reaction at extremely high temperatures. It has a graphite-like layered structure and offers advantages such as high hardness, mechanical strength, high purity, low friction coefficient, high-temperature resistance, and excellent electrical insulation.

Characteristic

Ultra-high purity (>99.999%) and excellent hermeticity

Excellent electrical insulation

Extremely low outgassing rate at elevated temperatures

Excellent chemical inertness: no reaction with acids, alkalis, salts, or organic solvents at high temperatures

The coating adheres tightly to the substrate and is not easily peeled off

Parameter

Performance Performance Unit Value
Density Density g/cm³ 1.95-2.20
Tensile Strength Tensile Strength N/mm² 102
Flexural Strength Flexural Strength N/mm² 243
Compressive Strength Compressive Strength N/mm² 244
Thermal Conductivity (at 200℃) W/(m·K) 60 (a-direction); 2.60 (c-direction)
Coefficient of Thermal Expansion (at 200℃) T.α/(1/K) 2.0×10⁻⁶ (a-direction)
Dielectric Constant (Room Temperature) Dielectric Constant (Room Temperature) / 5.81
Resistivity Resistivity Ω·cm 2.4×10¹⁵

Application field solutions

High-temperature heating and insulation components: PBN-coated heaters for wafer annealing processes, etc., featuring excellent heating uniformity and long service life.

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