Metal Casting HBN Hexagonal Boron Nitride Ceramic Ring BN99
Brand Name:ZG
Certification:CE
Model Number:MS
Minimum Order Quantity:1 piece
Delivery Time:3 working days
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Zhengzhou Henan China
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No. 26, Dongqing Street, High-tech Zone, Zhengzhou ,Henan, China
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Hot Press Boron Nitride HBN Ceramic Ring for Metal Casting
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 make 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 are easier machinable to desired shapes and sizes. - High Temperature Environments
Temperature stability and excellent resistance to thermal shock make BN 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.
Comparison of Boron Nitride Ceramics
| Grade | BN997 | BN99 | BN-SI | BN-AL | BN-SIC | BN-ZR | BN-ALN |
| Main Composition | BN>99.7% | BN>99% | BN+AL+SI | BN+ZR+AL | BN+SIC | BN+ZRO2 | BN+ALN |
| Bonding Composition | B2O3 | B2O3 | Boron oxide silicon | Boron oxide aluminum | Boron oxide aluminum | B2O3 | Boron oxide aluminum |
| Density (g/cm3) | 1.6 | 2 | 2.2-2.3 | 2.25-2.35 | 2.4-2.5 | 2.8-2.9 | 2.8-2.9 |
| Room Temperature Electric Resistivity (Ω·cm) | >1014 | >1014 | >1013 | >1013 | >1012 | >1012 | >1013 |
| Max Using Temperature (℃) In Atmosphere In Inactive Gas In High Vacuum (Long Time) | 900 2100 1800 | 900 2100 1800 | 900 1750 1750 | 900 1750 1750 | 900 1800 1800 | 900 1800 1800 | 900 1750 1750 |
| Three-Point Bending Strength (MPA) | 18 | 35 | 65 | 65 | 80 | 90 | 90 |
| Compressive Strength (MPA) | 45 | 85 | 145 | 145 | 175 | 220 | 220 |
| Thermal Expansion Coefficient (20-1000℃) (10-6/K) | 1.5 | 1.8 | 2.0 | 2.0 | 2.8 | 3.5 | 2.8 |
| Thermal Conductivity (W/m·k) | 35 | 40 | 35 | 35 | 45 | 30 | 85 |
| Typical Application: | High Temperature Furance | High Temperature Furance | Powder Metallurgy | Powder Metallurgy | Powder Metallurgy | Metal Casting | High Temperature Equipment |
| High Temperature Electrical Furnace Components (High Temperature Insulator Sleeve Tube etc) | Y | Y | Y | Y | Y | Y | |
| Metal Vaporize Crucible | Y | Y | |||||
| The Container Of Metal or Glass Melting | Y | Y | Y | Y | Y | Y | Y |
| The Casting Mould Components Of The Precious Metal And Special Alloy. | Y | Y | |||||
| High Temperature Support Part | Y | Y | Y | ||||
| Nozzle And Transport Tube Of The Melting Metal | Y | Y | Y | Y | Y | Y | |
| Remark: The value is just for review, different using conditions will have a little difference. | |||||||
Metal Casting HBN Hexagonal Boron Nitride Ceramic Ring BN99
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