Pyrolytic Boron Nitride Sheet , PBN Sheet

Categories Boron Nitride, Ceramics Materials

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Additional information

Material	Pyrolytic Boron Nitride (PBN)
Thickness	0.5mm~4mm
Purity	99.99%
Shape	Sheet

Description:

Pyrolytic Boron Nitride (PBN) Sheets from GESmaterials are produced through the Chemical Vapor Deposition (CVD) process, where BCl₃ and NH₃ gases react at high temperatures and low pressures to form ultra-pure boron nitride. This process ensures purity levels above 99.99%, with total metallic impurities less than 100 ppm. Compared to conventional hot-pressed BN ceramics, PBN sheets deliver exceptional purity, uniform microstructure, and near-theoretical density, making them highly reliable in demanding applications.

Key Properties

Ultra-High Purity: >99.99%, ensuring contamination-free performance in sensitive environments.
High Density & Strength: Near-theoretical density with excellent mechanical stability.
Outstanding Thermal Stability: Operates reliably at temperatures exceeding 2000 °C in inert atmospheres.
Thermal Shock Resistance: Capable of withstanding rapid heating and cooling cycles without damage.
Superior Chemical Resistance: Inert against most molten metals, acids, and corrosive environments.
Low Outgassing: Suitable for UHV (ultra-high vacuum) and semiconductor processes.

Applications:

Substrates in Semiconductor Manufacturing: Provides a stable, non-reactive base for thin film deposition and epitaxial growth.
Insulators in High-Temperature Furnaces: Ensures thermal stability and insulation at extreme operating conditions.
Microwave and RF Components: Serves as a high-purity dielectric material in electronic and communication devices.
Vacuum Sealing and Gasket Material: Used in UHV systems where contamination control is critical.
Protective Barriers in Chemical Processing: Functions as a chemically inert shield in corrosive and high-purity environments.

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
bend strength(ab)	197.76	N/mm2
elastic modulus	235690
thermal conductivity	“a” direction “c” direction
thermal conductivity(200℃)	60 2.60	W/m·k
thermal conductivity(900℃)	43.70 2.80	W/m·k
dielectric strength（at room temperature）	56	KV/mm

Why Choose GESmaterials PBN Sheets?
With superior purity, reliability, and thermal performance, GESmaterials PBN Sheets are the preferred choice for industries including semiconductors, electronics, high-temperature processing, and advanced materials research, where both performance and purity are essential.

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