Boron nitride (powder)
Also known as "white graphite", the fine ceramic crystals possess characteristics far superior to other materials.These characteristics include lubricity and releasing properties stable in high temperatures, electrical insulating properties and chemical stability.For this reason, h-BN is used as an ingredient in cosmetics and also in a wide range of industrial products.
Boron nitride is the future-oriented industrial material for which the development of further applications by making full use of its characteristics is expected.
At Mizushima Ferroalloy, the manufacture of boron nitride is conducted via a stringent process. Quality control ensures a consistent flow of high-purity and stability, whilst our product is subjected to stringent inspections to guarantee complete safety.
For resin fillers
Characteristics
• High thermal conductance
Thermal conductivity similar to iron
• Electrical insulating properties
High electrical resistance
• Low dielectric constant
Low amount of dielectric loss; minimal in ceramics familys
• Low density
Approximately twice the density of resin
• Low coefficient of friction
Usable for operations at temperatures of up to 900°C
Comparison of key characteristics of all resin filler types
| Key characteristics | BN | Al2O3 | AlN |
| Thermal conductivity (w/mK) | 40 to 60 | 20 | 100 |
| Dielectric constant | 4 | 9 | 9 |
| Density (g/cm3) | 2.2 | 4.0 | 3.2 |
Industrial applications
Characteristics
• Lubricity
Superior lubricity stable for temperatures of up to 900°C
• Releasing properties
High resistance to wetting with metallic glass and bearing excellent mold-releasing properties
• Heat resistance
2,200°C in inert atmospheres; atmospheric stability at temperatures of up to 900°C
• Corrosion resistance
Boasts high resistance to most molten metals
• Sinterability
Impalpable powder grade possessing high sinterability
• Chemical stability
Boron nitride is chemically stable; does not yield carburization even in applications that are exposed to high temperatures
Example applications
• Mold release agents for glass
• Solid lubricants
• Additives for oils and greases
• Powder metallurgy compounding agent
• Raw material for sintered bodies
Cosmetic applications
Characteristics
• Extremely high lubricity
• Superior hiding properties
• Revolutionary coverage
• High adhesion
• High safety levels
Our BN is approved by the Comprehensive Licensing Standards of Cosmetics by Category 1994 and is licensed worldwide for use in cosmetic applications.
Its superior lubricative and covering properties make it a popular ingredient for a wide variety of cosmetic products.
Example applications
• Various makeup products
Foundation and eye shadow
• Skin care products
Moisturizing gels, liquid cosmetics
BN powder grades for various applications
| Description | Uses | |||||||
| Resin fillers | Industrial | Cosmetics | ||||||
| Agglomerated type |
Spherical type |
Scaly type | Lubricant, mold release |
Ceramics | Spherical type | Scaly type | Spherical type | |
| Purity (BN%) |
>98 | >98 | >98 | >98 | >93 | >98 | >98 | >98 |
| Average particle size (μm) |
5 to 40 | 40 to 100 | 0.2 to 20 | 5 to 15 | 0.1 to 0.5 | 30 to 60 | 3 to 18 | 30 to 60 |
| Specific surface area (m2/g) |
2 to 5 | 3 to 10 | 1 to 25 | 3 to 10 | 25 to 90 | 4 to 6 | 4 to 10 | 3 to 5 |
| Bulk density (g/cc) |
0.5 to 0.8 | 0.5 | 0.2 to 0.4 | 0.2 to 0.6 | 0.2 to 0.6 | 0.5 | 0.3 to 0.4 | 0.5 |
| Appearance, Specific gravity |
White powder, true gravity 2.26 | |||||||