Boron Nitride Ceramics
Boron nitride is similar to graphite, but has a whitish colour. For this reason, it is also known as "white graphite". Surprising benefits can be achieved in applications by combining ceramics and other materials.
Boron Nitride (BN) custom machined parts are specially designed components made from high-purity boron nitride material. They are known for their excellent thermal and electrical insulation properties, high-temperature resistance, and exceptional chemical inertness.
BN custom machined parts can be produced in a variety of shapes, sizes, and configurations to suit specific industrial and research applications. Some common BN custom machined parts include insulators, heating elements, crucibles, thermocouple sheaths, and reaction vessels.
These parts are made using a variety of precision machining processes, such as diamond grinding, laser cutting, and waterjet cutting. The high purity of the boron nitride material ensures that the machined parts are free from impurities, making them ideal for use in demanding applications that require high thermal and electrical stability.
Material of Boron Nitride Ceramics:
- Pyrolytic Boron Nitride: 99.99% Boron Nitride*
- UHB: >99.7% Boron Nitride
- HB: >99% Boron Nitride
- BC: >97.5% Boron Nitride
- BAN: Boron Nitride + Aluminum Nitride
- BMZ: Boron Nitride + Zirconium Oxide
- BMA: Boron Nitride + Zirconium Oxide + Aluminum Oxide
- BSC: Boron Nitride + Silicon Carbide
- BMS: Boron Nitride +Silicon Oxide+Aluminum Oxide
Applications:
- Foundries
- Electronics
- Oil & Gas
- Automotive
- Aerospace
Comparison of Boron Nitride Ceramics:
Grade BN BN-BO BN-AL BN-SZr BN-Zr BN-AlN Composition BN＞99% BN>98% BN+Al BN+SiC+ZrO₂ BN+ZrO₂ BN+AlN Density 1.95 g/cm³ 2.1-2.2 g/cm³ 2.3 g/cm³ 2.3-3.0 g/cm³ 2.9 g/cm³ 2.65 g/cm³ Resistivity >10¹⁴Ω·cm >10¹³ Ω·cm >10¹³ Ω·cm >10¹² Ω·cm >10¹² Ω·cm >10¹⁴Ω·cm Max. Use Temperature(°C)
Air:
Inert gas:
Vacuum:900
2100
1900900
2000
18001000
1700
1700900
1700
17001000
1800
1800900
2100
1900Flexural Strength (MPa) 30 75 85 100 120 130 Compressive Strength(MPa) 55 100 145 300 200 250 Coefficient of Thermal Expansion, 25°C⭢1000°C 1.5 x 10⁻⁶/K 2.0 x 10⁻⁶/K 1.9 x 10⁻⁶/K 4.0 x 10⁻⁶/K 3.5 x 10⁻⁶/K 4.5 x 10⁻⁶/K Thermal Conductivity(W/m⋅K) 30 30 35 40 30 60 Boron Nitride Custom Parts Available Materials:
Material Description Availability BN99 Hot pressed at high temperature (1900℃).
Excellent corrosion resistance and thermal conductivity. Limited wear resistance
Self-bonded and high purity(>99%)Machinable Blanks
Finished PartsBNBO General purpose material
Bonded by boric oxideFinished Parts BNCB Calcium borate bonded boron nitride
Enhanced moisture resistanceFinished Parts BN60 BN 60%, SiO₂ 40% Finished Parts BN40 BN 40%, SiO₂ 60% Finished Parts ZSBN BN-45%, ZrO₂ 45% Finished Parts
