What is Silicon Nitride (Si₃N₄) Nanopowder/Nanoparticles?

Silicon Nitride (Si₃N₄) nanopowder/nanoparticles are advanced ceramic materials characterized by exceptional mechanical strength, thermal stability, chemical resistance, and excellent electrical insulation properties. Due to their unique properties, Si₃N₄ nanoparticles are widely used in electronics, automotive, aerospace, biomedical, and industrial applications.

Chemical Properties and CAS Number

• Chemical Formula: Si₃N₄
• CAS Number: 12033-89-5
• Appearance: White to greyish-white powder
• Density: Approximately 3.2 g/cm³
• Particle Size: Typically 20-100 nm (customizable)
• Thermal Stability: Excellent, stable up to ~1800°C
• Electrical Conductivity: Highly insulating
• Chemical Stability: Resistant to oxidation, acids, alkalis, and corrosion

Applications of Silicon Nitride (Si₃N₄) Nanopowder/Nanoparticles

1. Electronics and Semiconductors

Used as an insulating layer, dielectric material, and substrate in semiconductor devices, microelectronics, and integrated circuits.

2. Automotive and Aerospace

Applied in high-performance components such as bearings, turbochargers, and engine parts due to superior mechanical properties, thermal stability, and wear resistance.

3. Biomedical Applications

Employed in orthopedic implants, medical devices, and bioactive coatings for their biocompatibility, mechanical strength, and chemical stability.

4. Industrial Applications

Utilized in cutting tools, mechanical seals, and wear-resistant coatings, enhancing durability and efficiency in industrial operations.

5. Energy Systems

Used in components for solar energy, fuel cells, and batteries, benefiting from their thermal stability, chemical inertness, and mechanical strength.

Pricing of Silicon Nitride (Si₃N₄) Nanopowder/Nanoparticles

Pricing varies based on purity, particle size, and specific application needs:

• Standard Grade: Typically ranges from $50 – $200 per kilogram
• High-Purity/Specialized Grade: Prices range from $200 – $600 per kilogram, tailored for critical applications in electronics, biomedical, and aerospace industries.

Factors Influencing Pricing

• Purity levels and particle size
• Production complexity and techniques
• Specific application and quality requirements
• Market demand in electronics, automotive, aerospace, biomedical, and industrial sectors

Conclusion

Silicon Nitride (Si₃N₄) nanopowder/nanoparticles offer outstanding mechanical, thermal, chemical, and electrical properties, making them ideal for advanced applications across various industries. Pricing is influenced by material purity, particle size, and industry-specific requirements.