Product Properties
Silicon Nitride (Si3N4) nanopowder/nanoparticles (nm & um)
Size | Type | Particle size（nm） | Purity（%） | Specific surface area（m2/g） | Bulk density（g/cm3） | Polymorphs | Color |
nm | JB-Si3N4-001 | 30 | >99.9 | 59.8 | 0.09 | amorphous | white |
sub um | JB-Si3N4-002 | 800 | >99.9 | 10.5 | 1.16 | face-centered cubic | greyish white |
Custom | Acccording to customers requirment. (30-800nm etc) | ||||||
Silicon Nitride (Si3N4) Nanopowder Features
Exceptional Hardness and Strength: Silicon nitride nanopowder exhibits outstanding hardness and mechanical strength, surpassing many metals and standard ceramics. This makes it ideal for use in high-stress, high-wear applications.High-Temperature Resistance: Si₃N₄ maintains its strength and structural integrity at high temperatures, making it suitable for components in high-temperature environments, such as gas turbines and engine parts.Low Thermal Expansion Coefficient: Its low thermal expansion coefficient minimizes dimensional changes with temperature variations, crucial for applications requiring high dimensional stability.Abrasion Resistance: The hardness and strength of silicon nitride contribute to its excellent resistance to wear and abrasion, making it a preferred material for bearings, cutting tools, and other components subject to high wear.Corrosion Resistance: Silicon nitride is resistant to corrosion and oxidation, even at high temperatures. This resistance extends to many acids and alkalis, making it suitable for chemical processing environments.
Silicon Nitride (Si3N4) Nanopowder Applications
- Engine Components: Si₃N₄ is used in high-temperature engine parts for aerospace and automotive applications, including turbocharger rotors and exhaust valves, due to its high temperature resistance and strength.
- Bearings and Seals: The excellent wear resistance and mechanical strength make silicon nitride ideal for bearings, seals, and other components that require long service life under high stress and high-speed conditions.
- Cutting Tools: The hardness and thermal stability of silicon nitride enable its use in cutting tools for high-speed machining of metals, providing longer tool life and improved performance.
- Wear Parts: Components subject to high wear, such as guides, nozzles, and balls for ball valves, benefit from the wear resistance and durability of Si₃N₄.
- Substrates and Insulators: Silicon nitride‘s electrical insulation properties, combined with its thermal conductivity, make it suitable for electronic substrates and insulators, particularly in applications requiring heat dissipation alongside electrical isolation.
- MEMS (MicroElectroMechanical Systems): The material’s mechanical strength and chemical stability are advantageous in the fabrication of MEMS devices, where precision and reliability are critical.