INNOVACERA | technical ceramic solutions

  INNOVACERA manufactures a wide range of PBN ceramic components, including discs, sheets, filament rings, VGF crucibles, LEC crucibles, MBE crucibles, conical crucibles, and custom-machined parts. Pyrolytic Boron Nitride (PBN) is a high-purity material derived from hexagonal boron nitride (hBN) using a chemical vapor deposition (CVD) process. This method aligns boron nitride crystals parallel to the substrate, resulting in exceptional purity (99.99%) and durability. PBN’s CVD structure limits wall thickness to 3mm but provides high mechanical strength, making it ideal for high-vacuum environments and molten metal applications. Its unique thermal properties, such as anisotropic thermal conductivity and resistance to high temperatures, make PBN the preferred material for vacuum furnace components and crystal growth crucibles. In molecular beam epitaxy (MBE), a standard process for gallium arsenide (GaAs) crystal production, PBN crucibles excel due to their superior performance. Key ...

  How does a PBN heater work? What is the insulation material? What is a PBN heater? PBN material refers to  pyrolytic boron nitride  material obtained by CVD high-temperature deposition. BN refers to cubic boron nitride, which is obtained by hot pressing. The common thickness of PBN parts is less than or equal to 3mm due to the different acquisition processes. PBN heater   refers to a graphite heater formed by depositing a thin layer of graphite on a PBN substrate and forming a graphite band by machining (laser engraving). Finally, the graphite layer is covered with a layer of PBN cover layer (exposed electrode part) to become a complete graphite heater.   How many ways are there to process? Generally, there are two ways: 1 st : PBN sheet to make a good groove, and then coated with pyrolytic graphite, add a layer of PBN coating (outside the circuit engraved by the pbn disk, deposition of pyrolytic graphite on the circuit, and then a layer of pbn deposited on th...

Source: https://www.innovacera.com/news/pbn-pg-heater-performance-and-applications.html The PBN-PG ceramic heater combines three layers of ultra-high purity ceramics, PBN-PG-PBN to produce an advanced micro-ceramic heating element system. PBN as an insulating substrate and PG as the resistive element. Both our PBN heater (Pyrolytic Boron Nitride) and PG heater (Pyrolytic Graphite) are manufactured by high temperature CVD. These high performance elements exhibit outstanding thermal properties in a ceramic heater, including high thermal conductivity and anisotropy. Mechanically durable and thermally shock resistant, PBN-PG heaters are unaffected by vibration under most conditions and can be tailored to thermal gradients for specific requirements. With an ultra-fast response and low thermal mass, PBN-PG heaters demonstrate a power output of 35 watts/cm 2 (225 watts/in 2) and higher. PBN-PG Performance Advantages: Micro-ceramic heating element has an operating temperature of 1600°C. High m...