Boron nitride components for MOCVD

By -

Hot-pressed hexagonal Boron Nitride is often referred to as “white graphite” since it has similar layer structure as graphite. It has outstanding thermal characteristics: high thermal conductivity and excellent thermal shock resistance. It is stable up to 2000 °C in reducing atmospheres, and up to 900 °C in oxidizing atmospheres. It has features such as highly machinable, low thermal expansion, microwave transparency and high wet resistance to molten metals, slags and glass. Boron nitride ceramic parts are widely used as PVD, MOCVD, MBE system, furnace components, melting crucibles, insulators, washers, nozzles, microwave tubes, heat sink and heat radiation shielding.

BN Plate
An MOCVD reactor is a chamber made of a material that does not react with the chemicals being used. It must also withstand high temperatures. This chamber is composed of reactor walls, a liner, a susceptor, gas injection units, and temperature control units.
In the MOCVD reactor, the substrate is supported by a pedestal, which also acts as a susceptor. The pedestal/susceptor is the primary origin of heat energy in the reaction chamber. Only the susceptor is heated, so gases do not react before they reach the hot wafer surface. The reaction chamber walls in a cold-wall reactor, however, may be indirectly heated by heat radiating from the hot pedestal/susceptor, but will remain cooler than the pedestal/susceptor and the substrate the pedestal/susceptor supports. So Boron Nitride is a good choice because the power density, operating temperature, insulation grade and dielectric strength of heating elements can be greatly improved by using Boron Nitride as an insulator. It is also more economical and reduces thermal inertia. The annular shape reduces the size of the heating system and improves heat transfer.

BN
What should I pay attention to when I use Boron Nitride products?
1. Keep BN products in vacuum package before usage.
2. After vacuum package is removed, store BN products in dry and cool environment. Keep container tightly closed while not in use.
3. BN products are brittle. Please handle with care.

Comments

Post a Comment

Popular posts from this blog

Silicon Nitride Heater

By -
Image
Source: https://www.innovacera.com/news/silicon-nitride-ceramic-heater.html Silicon Nitride Heater has the properties of high-temperature resistance, rapid speed-up, high thermal conductivity, which makes it widely apply for parking heater, heating element for central heating system, spark sensor, etc. Silicon Nitride Heater Features: High-temperature resistance Excellent thermal conductivity Rapid heating-up speed and high working temperature Good startup performance at low temperature, can be start-up at -30℃ Wide applications: high-speed diesel, high-temperature ignition device, ignition for oil medium, gas, burner, Preheater, etc. Application Mold heater Packaging Machinery Tobacco equipment Industrial equipment heating Burner ignition system Petrochemical industry Various high-temperature ignition devices
Read more

What makes the ceramic heating element the core part of a Vaporizer?

By -
Image
Source: https://www.innovacera.com/news/ceramic-heater-coil-for-vaporizer.html Not every dry herb vaporizers are the same! Especially those used ceramic heating element. The ceramic heating element is a safety and healthiest option for dry herb vaporizers, so every vaper is preferred to choose those vaporizers that carry ceramic heating element. The proponents believe that the heating element is the core of the vaporizer and primarily dictates the experience of the taste. Let's more specific, when a vaper burns tobacco, marijuana, or hemp during traditional smoking to release the active component, whatever it's nicotine, CBD, or THC, they inhale the smoke. We all know that's not good for health. Rather than burning, Vaporizer heats the liquid, wax or even dry herb to release a vapour, and a vaper inhales the vapour without any damage to their lungs or throat. And why the ceramic heating element is becoming the core part of the vaporizer? It's mainly because: 1. Ceramic ...
Read more

Machinable Aluminum Nitride BAN

By -
Image
BAN combines  Aluminum Nitride with Boron Nitride , a hybrid machinable Aluminum Nitride ceramic with excellent thermal conductivity, high strength, and resistance to thermal shock. Innovacera provides BAN, and it has very similar properties to SHAPAL material. SHAPAL is a trademark of Tokuyama Corporation.   These ceramics are used in various industries, including electronics, semiconductor manufacturing, aerospace, automotive and medical. BAN ceramics have properties that make them suitable for applications such as  heat sinks , heater substrates, semiconductor processing components, and optical equipment.   Material Advantages : High mechanical strength. High thermal conductivity. Low thermal expansion. Low dielectric loss. Excellent electrical insulation. High corrosion resistance–non-wetted by molten metals. Excellent Machinabilit–BAN can be machined to high-precision complex shapes. It has excellent sealing ability to vacuum and hasn’t given off much gas. High-...
Read more