Boron Nitride  Manufacturers, Traders, Suppliers

Boron Nitride Powder (Hexagonal) , Bn, Hbn

Synonyms: Hexagonal Boron Nitride Powder, White Graphite
CAS No.: 10043-11-5
EINECS: 233-136-6
Molecular Formula: BN
BN: 98/99% min.
Average Particle Size (D< Sub>50< /sub>): From 1.4 to 15 micron (particle size from 0.8 micron to 15 micron)
Appearence: White Powder
Boron Nitride Powder (hBN) is also known as 'White Graphite', has similar (hexagonal) crystal structure as of Graphite. This crystal structure provides excellent lubricating properties.
Excellent Lubricating Properties due to low Coefficient of Friction at 0.15 to 0.70Good Chemical Inertness
*Electrical Insulator
*Thermal Conductor (result: Better heat dissipation)
*High Temperature Stability, 1000º C in Air, 1400º C in Vacuum and 1800º C in Inert gas
*Low Thermal Expansion
*Low Dielectric Constant
*High Load bearing properties
*Non-Wetting: HBN is not wetted by Glasses, Salts and (most) metals, therefore it provides strong resistance to chemical attack Easy Machineability (in hot pressed state). Complex shapes can be machined from hot pressed structure.

Applications:
Thermal Additive, lubrication, ceramic composite, hot press etc

Boron nitride is an advanced engineering ceramic material. Its high heat capacity and excellent thermal conductivity, easy processing, lubricity, low dielectric constant and excellent dielectric strength make BN ceramics an excellent advanced ceramic material.

• BN Content: ＞99.3%
• Density: 2.27 (g/cm³)
• Vickers Hardness(HV50): 2(Gpa)
• Maximum Temperature: 900(℃)
• Thermal Conductivity @ 20°C:33(W/mK)
• Dielectric Strength: 30(KV/mm)
• Volume Resistivity @ 20°C : ＞1014(Ω.cm)

Boron nitride is an advanced ceramic material that can be present in both solid and powder forms. It not only has high heat capacity and excellent thermal conductivity, but also exhibits excellent processing performance, lubricity, low dielectric constant and excellent dielectric strength. These unique advantages make it perform well in many fields.

Thermal Shock Resistance: Excellent
Electrical Insulation: High resistivity (excluding aerosols, paints, and ZSBN grade)
Density: Low
Thermal Conductivity: High
Anisotropy: Thermal conductance varies with direction
Corrosion & Chemical Resistance: Outstanding
Temperature Stability: Suitable for high-temperature use
Wetting: Non-wetting
Dielectric Properties: High breakdown strength (>40 KV/mm) and low dielectric constant (k=4)
Machinability: Excellent

Break rings for continuous casting
Crucibles and containers for high-purity molten metals and glasses
Deck plates and setter plates for high-temperature furnaces
Heat treatment fixtures
High-temperature lubricants and valves
Vacuum furnace supports with electrical resistivity requirements
Plasma chamber linings and fittings