Description
Silicon Nitride (Si₃N₄) Nanopowder / Nanoparticles – Amorphous (99+%, 80 nm)
Silicon Nitride (Si₃N₄) nanoparticles are super-hard ceramic nanomaterials with outstanding mechanical strength, wear resistance, and thermal stability. Produced in amorphous form with a purity of 99+% and an average particle size of 80 nm, these nanoparticles exhibit a white color, spherical morphology, and high specific surface area (40–60 m²/g).
Manufactured via Plasma Arc Vapor Synthesis, Si₃N₄ nanopowder delivers superior corrosion resistance, thermal shock resistance, and anti-oxidation properties, making it an ideal material for aerospace, energy, metallurgy, and advanced structural ceramics. With a hardness of 9–9.5 (Mohs) and excellent dimensional stability, Si₃N₄ is recognized as one of the most reliable advanced ceramic materials.
Technical Properties
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Chemical Formula: Si₃N₄
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Phase: Amorphous
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Purity: 99+%
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Average Particle Size (APS): 80 nm
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Color: White
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Bulk Density: 0.15 g/cm³
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True Density: 3.4 g/cm³
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Specific Surface Area (SSA): 40–60 m²/g
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Zeta Potential: -21.8 mV
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Morphology: Spherical
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Manufacturing Method: Plasma Arc Vapor Synthesis
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CAS Number: 12033-89-5
Certificate of Analysis (% – metal basis)
| Component | Value |
|---|---|
| Si₃N₄ Purity | >99% |
| Free Si | <0.5 |
| Cl | <0.25 |
| O | <1.25 |
Mechanical & Physical Features
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Hardness: 9–9.5 (Mohs); Knoop hardness: ~2200
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Microhardness: 32,630 MPa
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Modulus: 28,420–46,060 MPa
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Bending Strength: 147 MPa
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Compressive Strength: 490 MPa (reaction-sintered)
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Melting Point: 1900 °C (under pressure)
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Thermal Conductivity: 16.7 W/(m·K)
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Thermal Shock Resistance: Can withstand heating above 1000 °C followed by rapid cooling without fracturing.
Applications
Silicon Nitride Nanoparticles are widely used as advanced structural ceramic materials:
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Structural Devices: Bearings, sleeves, valves, and wear-resistant high-temperature components in metallurgy, chemical, aviation, and energy industries.
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Surface Treatments: Coatings for molds, cutting tools, turbine blades, rotors, and cylinder walls.
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Composite Materials: Reinforcement in metals, ceramics, rubbers, plastics, coatings, adhesives, and polymers.
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Protective Films: Used in transparent, self-lubricating, wear-resistant coatings for electronics, automotive, and mobile devices.
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High-Performance Parts: Applied in ball bearings, ball valves, insulating parts, grinding wheels, turbine components, and rocket/missile spray nozzles.
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Advanced Engineering: Strengthening agent for aluminum and high-performance alloys.