Boron Nitride crucible for melting with customized size, BN crucible
Boron Nitride crucible for melting with customized size, BN crucible
Hexagonal Boron Nitride has a microstructure similar to that of Graphite. In both materials this structure, made up of layers of tiny platelets, is responsible for excellent machinability and low-friction properties. we called hexagonal boron nitride (HBN) or white graphite
Material of Boron Nitride Ceramics
- Pyrolytic Boron Nitride: 99.99% Boron Nitride*
- 99 Boron Nitride: Boron Nitride + Boric Oxide(B2O3)
- CABN: Boron Nitride + Calcium Borate
- ALBN: Boron Nitride + Al2BO3
- ZRBN: Boron Nitride + Zirconium Oxide + Boric Oxide(B2O3)
- ZABN: Boron Nitride + Zirconium Oxide + Aluminum Nitride + Al2BO3
- SCBN: Boron Nitride + Silicon Carbon + Al2BO3
Processing of Boron Nitride Ceramics
- Hot Pressed Sintering
- Chemical Vapor Deposition
Applications of Boron Nitrides Ceramics
- Thermal Management
Excellent electrical insulation and thermal conductivity makes BN very useful as a heat sink in high power electronic applications. Its properties compare favorably with beryllium oxide, aluminum oxide and other electronic packaging materials, and easier machinable to desired shapes and sizes . - High Temperature Environments
Temperature stability and excellent resistance to thermal shock makes BN as the ideal material in the toughest high temperature environments such as equipment for plasma arc welding, diffusion source wafers, and semiconductor crystal growth equipment & processing. - Molten Metal Handling
BN is inorganic, inert, nonreactive with halide salts and reagents, and is not wet by most molten metals and slags. These characteristics, combined with low thermal expansion, make it ideal for interface materials used in various molten metal processes.
Comparsion of Boron Nitride Ceramics
| Grade | BN99 | CABN | ALBN | ZRBN | ZABN | SCBN |
| Compositions | BN>98.5% | BN>97.5% | AlN+BN | ZrO2+BN | ZrO2+AlN+BN | SiC+BN |
| Binder | B2O3 | CaB2O3 | AlBO3 | B2O3 | AlBO3 | AlBO3 |
| Density(g/cm3) | 1.95~2.0 | 2.0~2.1 | 2.6 | 2.9~3.0 | 3.2~3.3 | 2.4~2.6 |
| 25°CVolume Resistivity (Ω·cm) | >1014 | >1013 | >1014 | >1012 | >1012 | >1012 |
| Max. Service Temp. (°C)Oxygen Inert Gas High Vacuum | 900 2400 2200 | 900 2400 2200 | 900 2100 1900 | 1000 1800 1800 | 900 1800 1800 | 900 1700 1700 |
| Three-point Flexural Strength(Mpa) | 30 | 70 | 130 | 120 | 130 | 91 |
| Compressive Strength(Mpa) | 100 | 100 | 250 | 280 | 300 | 300 |
| Coefficient of Thermal Expansion 25~1000°C (10-6/K) | 1.5 | 2.0 | 4.5 | 5.0 | 5.0 | 4.0 |
| Thermal Conductivity (W/mK) | 15 | 20 | 50 | 20 | 40 | 40 |
| High Temp. Furnace Accessories (High Temp Insulator Parts) | v | v | v | |||
| Metal Evaporation Crucible | v | v | v | |||
| Accessories for Melting Metals and Glasses | v | v | v | v | v | |
| Mould Parts for Noble Metals and Special Alloys Casting | v | v | v | v | v | v |
| High Temperature High-Loaded Supporting Components | v | v | v | v | ||
| Transfer Tube and Nozzle for Melting Metals. | x | x | x | x | x |
reference of the Boron Nitride crucible for melting with customized size, BN crucible
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