Comprehensive Overview of Boron Nitride Plates
Boron nitride plate is a high-performance material. It has excellent high-temperature resistance and can be kept stable in a high-temperature environment, has good insulation, and can effectively prevent the passage of electric current; it also has high hardness, high strength characteristics, and wear-resistant performance is excellent. In addition, boron nitride plate has strong chemical stability and is not easily eroded by chemicals. It has a wide range of applications in aerospace, electronics, metallurgy and many other fields and is one of the important materials to promote the development of modern industry.
Boron Nitride Plates
Characteristics of Boron Nitride Plates
High-Temperature Resistance: Boron nitride plates have a high melting point and good thermal stability. They can operate for extended periods in high-temperature environments without deformation or melting, withstanding temperatures exceeding 1000°C. This makes them widely used in high-temperature industrial sectors like metallurgy and glass manufacturing.
Excellent Insulating Properties: boron nitride is an excellent electrical insulating material with high resistivity and low dielectric constant, which can effectively prevent the current from passing through and can be used as an insulating part of electronic devices to ensure the safe operation of equipment.
Strong Chemical Stability: Boron nitride plates exhibit strong corrosion resistance to acids, alkalis, and other chemicals. They are unlikely to undergo chemical reactions with other substances in harsh chemical environments and can maintain stable performance. This makes them suitable for corrosion-resistant equipment in industries such as chemicals and pharmaceuticals.
Good Lubricity: The crystal structure of boron nitride plates gives them lubrication characteristics similar to graphite, with a low coefficient of friction. They can serve as solid lubricants under special conditions like no lubrication or high-temperature, high-speed environments. This reduces wear and tear between mechanical parts and enhances equipment lifespan.
High Mechanical Strength: Boron nitride plates have high hardness and strength, as well as excellent wear resistance. They can withstand significant pressure and impact, making them suitable for manufacturing wear-resistant components and molds.
Specifications Table of Boron Nitride Plates
| Items |
Details |
| Grade |
bn99 (grade ax05), bn-bo (grade a), bncb (grade hp), bns io (m&m 26), bn-aln, zs bn |
| Composition |
hbn > 99.5% for bn99; hbn > 98% for bn-bo; hbn > 90% for bncb; calcium borate for some grades; hbn 40%, sio2 60% (m) for bns io; hbn 60%, sio2 40% (m26) for another form of bns io; bn + aln for bn-aln; albo3, hbn > 45%, zro2 < 45%, borosilicate < 10% for zs bn |
| Color |
White for most grades like bn99, bn-bo, bncb, bns io; gray for zs bn |
| Density |
1.9 g/cm³ for bn99; 2.1 g/cm³ for bn-bo; 2.0 g/cm³ for bncb; 2.1 - 2.3 g/cm³ for bns io; 2.5 - 2.6 g/cm³ for another related type; 2.9 g/cm³ for zs bn |
| Shape |
Plate/sheet, and can also be made into custom parts such as rod, tube, crucible, nozzle etc |
| Size |
Customizable, for example, up to 410 mm x 495 mm x 245 mm in some cases |
| Melting Point |
2973 °C |
| Refractive Index |
1.8 (h-bn); 2.1 (c-bn) |
| Electrical Resistivity |
13 to 15 10x ω - m |
| Features |
Excellent corrosion resistance, high thermal conductivity, thermal shock resistance, excellent moisture resistance, low thermal expansion, spallation resistance, high-temperature resistance, easy machining, good wear resistance, chemical stability, high thermal shock stability |
| Applications |
Electric insulators in vacuum systems, spacers for glass melting, components for ion injection equipment, insulators for high-temperature furnaces etc. |
|
Applications of Boron Nitride Plates
Electronics: Due to its good insulating properties and thermal stability, boron nitride plate can be used to manufacture insulating brackets and substrates for electronic components, which can effectively isolate circuits, prevent short circuits, and help dissipate heat to ensure the stable operation of electronic equipment. In semiconductor manufacturing, it can also be used as a bearing material for high-temperature diffusion. In semiconductor manufacturing, they also serve as bearing materials for high-temperature diffusion.
Aerospace: Boron nitride plates, with their high-temperature resistance and high strength, are ideal for manufacturing aero-engine components and thermal protection systems for spacecraft. They can withstand extreme temperatures and pressures, safeguarding the safety performance of vehicles in harsh environments.
Metallurgy: The boron nitride plate has strong chemical stability and can be used as a crucible and shunt ring in metallurgical processes to resist the erosion of high-temperature metal liquid and improve the service life of the container. And can also be used as the lining of a continuous casting crystallizer to improve the surface quality of the casting billet.
Mechanical Processing: Utilizing their lubricity and high hardness, boron nitride plates can be made into tool coatings and wear-resistant components. Tool coatings reduce cutting forces and improve tool wear resistance and lifespan, while wear-resistant components are applied in high-friction, high-wear mechanical moving parts to reduce wear and enhance mechanical efficiency.
Optics: Boron nitride plates, with their good optical properties, can be used to manufacture optical instrument components such as lens holders and reflector bases. They ensure the precision and stability of optical instruments in various environments.
Company Profile
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, ceramic products, 3D printing powder, etc.
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5 FAQs About Boron Nitride Plates
Q1: What are the latest research directions for boron nitride plates?
Superhydrophobic coatings: Composite coatings of hexagonal boron nitride and wollastonite can achieve self-cleaning and long-lasting corrosion resistance, suitable for marine engineering.
Nanocomposites: Incorporating boron nitride nanosheets into epoxy resin can enhance the impact resistance and thermal conductivity of coatings.
Semiconductor applications: Cubic boron nitride, as a third-generation semiconductor material, has demonstrated the ability to operate at high temperatures of 650°C in deep-ultraviolet LEDs.
Q2: How can the lifespan of boron nitride plates be extended?
Avoid sudden cooling and heating: Although boron nitride plates have a low coefficient of thermal expansion (2.0 - 6.5 × 10⁻⁶/°C), drastic temperature changes may cause cracking.
Regular cleaning: Wipe the surface with a soft cloth dipped in alcohol to prevent corrosion from residual metal debris.
Storage conditions: Store in a dry environment to prevent moisture absorption, which could affect insulation performance.
Q3: Are there any safety hazards associated with boron nitride plates?
Dust hazards: Nano-scale dust generated during processing may irritate the respiratory tract. It is recommended to wear a dust mask during operations.
High-temperature protection: Above 2000°C, boron nitride may react with carbon to form boron carbide. Avoid contact with graphite and other carbon-containing materials in high-temperature environments.
Q4: Can boron nitride plates be cut and drilled?
Yes, but specialized processes are required. Conventional machining methods such as CNC milling and laser cutting can achieve high-precision shaping. For example, the Huanuo laser cutter can create micron-level holes in boron nitride ceramics. 3M's boron nitride sintered parts even support ultrasonic-assisted machining, suitable for customizing complex shapes.
Q5: How to select the purity of boron nitride plates?
The choice depends on the application scenario:
95% - 98% purity: Suitable for general high-temperature lubrication and refractory additives.
Above 99% purity: Ideal for electronic devices (e.g., CPU heat dissipation films) and precision optical components.
Nano-scale purity: Used in high-end thermal conductive interface materials, such as 3M's boron nitride cooling fillers.
