Pyrolytic Boron Nitride Crucible Feature
1. No gas is released at high temperature.
2. Uniform thickness, good heating consistency.
3. Excellent thermal conductivity and thermal shock resistance.
4. High interlayer strength, easy to clean and repeated use.
5. Chemically inert, does not react with acids, alkalis, salts and organic solvents at high temperatures.
Pyrolytic Boron Nitride Crucible Applications
• Crucibles for in-situ synthesis of GaAs, InP, GaP and other semiconductor single crystals.
• Crucibles and boats for the synthesis of single crystals or polycrystals of other III-V compounds.
• MBE crucible for molecular beam epitaxy.
• Special-shaped crucible and special-shaped graphite parts coating.
• Crucible for special metallurgy.
Pyrolytic Boron Nitride Crucible Technical Data
| Color | White |
|---|---|
| Specific Density | 2.0~2.05 g/cm³ |
| Dielectric Constant @ 14 GHz | “a” – 5.2 to 5.4 |
| “c”- 3.4 | |
| Thermal Conductivity | “a” – Direction 60 W/m ˚C |
| “c” – Direction 2 W/m ˚C | |
| Loss Tangent | “a” – 5.4×10-4 |
| “c” – 0.0001 | |
| Dielectric Strength | 2×10⁵ Volts/mm (min) |
Pyrolytic Boron Nitride Crucible Standard Sizes
| Code | Capacity | Diameter (mm) | Height (mm) |
|---|---|---|---|
| PC01 | 300CC | 70 | 160 |
| PC02 | 500CC | 82 | 190 |
| PC03 | 580CC | 84 | 186 |
| PC04 | 700CC | 85 | 240 |
What is Pyrolytic Boron Nitride Crucibles (PBN)?
Pyrolytic boron nitride is also written as PBN or pyrolytic BN. It is a highly pure ceramic that has high chemical resistance and commendable strength at high temperatures. Boron nitride is a compound made synthetically from boron and nitrogen. This material has good thermal conductivity and is commonly used to make electrical insulators and cutting tools. Pyrolytic Boron Nitride Overview: Properties, Production, and Uses.
What is Pyrolytic Boron Nitride Crucibles?
Pyrolytic Boron Nitride Crucibles are created by CVD process, whereby all boron nitride crystals grow parallel to the surface on which vapor is deposited. Thick-walled crucibles (>2mm) are typically unavailable due to the nature of the CVD process, resulting in most common PBN crucibles being 0.8~1.5mm thick. The CVD process imparts these PBN crucibles with a nearly perfect layered structure, resulting in anisotropic thermal conductivity ideal for crystal growth. PBN is the primary material for producing crucibles in GaAs crystal production.
