Pyrolytic Boron Nitride PBN
Product Overview
Our Pyrolytic Boron Nitride / Pyrolytic Graphite (PBN/PG) composite ceramic heater combines the electrical conductivity of pyrolytic graphite (PG) with the electrical insulation and chemical inertness of pyrolytic boron nitride (PBN). Unlike metal or SiC heaters, the all‑pyrolytic construction provides ultra‑high purity, excellent temperature uniformity, and zero outgassing – essential for sensitive semiconductor, optoelectronic, and OLED manufacturing processes.
The typical structure consists of a PG heating layer fully encapsulated by PBN, or a PG heater body with a PBN coating, ensuring that only inert, non‑reactive PBN is exposed to the process environment.
Key Features & Benefits
High‑Purity Construction – Both PBN and PG are >99.999% pure, eliminating metal contamination (Fe, Cr, Ni, etc.) common in Nichrome, Kanthal, or graphite‑metal hybrid heaters.
Excellent Thermal Uniformity – PG's anisotropic thermal conductivity (high in‑plane, low through‑thickness) combined with PBN’s tailored properties delivers uniform heat distribution across the heater surface.
Fast Thermal Response – PG offers low thermal mass and high electrical‑to‑thermal conversion efficiency, enabling rapid ramp‑up and cool‑down cycles.
Outgassing‑Free – CVD‑deposited PBN and PG have extremely low gas permeability, preserving high vacuum (≤10⁻⁷ Torr or better).
Chemical Inertness – PBN encapsulation resists attack from most molten metals, organics, and reactive gases used in MBE or MOCVD.
High Operating Temperature – Continuous use up to 1,400°C in vacuum or inert atmospheres; peak temperatures to 1,600°C possible for short durations.
Customizable Geometry – Available as flat plate, cylindrical, conical, or custom‑shaped heaters; multiple zones possible.
PBN Product Range
PBN with unique properties and high structural and physicochemical stability can be the best choice as:
PBN crucibles for the Vertical Gradient Freezing (VGF) process
PBN crucibles for the Liquid Encapsulation Czochralski (LEC) process
PBN containers for the Molecular Beam Epitaxy (MBE) process
PBN boats for compound semiconductors and alloy processing
PBN Metal-Organic CVD (MOCVD) insulation boards and MBE insulation rings
PBN electrical insulation bushings for high-temperature vacuum equipment
PBN traveling wave tube (TWT) with spiral structure
PBN-PG composite heaters
GDMS Analysis
Analytical Element | Result(μg/g) | Analytical Element | Result(μg/g) |
Li | <0.005 | Si | 1.7 |
F | <0.005 | CI | <0.005 |
Na | <0.005 | S | <0.005 |
Pakkaus & Toimitus
Xiamen Wintrustek Advanced Materials Co., Ltd.
OSOITE:No.987 Huli Hi-Tech Park, Xiamen, Kiina 361009
Puhelin:0086 13656035645
Puh:0086-592-5716890
MYYNTI
Sähköposti:sales@wintrustek.com
Whatsapp/Wechat:0086 13656035645
