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China Suppliers Customizable High Temperature Hot Press Boron Nitride Ceramic 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
Processing of Boron Nitride Ceramics
Applications of Boron Nitrides Ceramics
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. |