Silicon nitride (Si₃N₄) is a high-performance inorganic ceramic material recognized for its exceptional mechanical strength, thermal resistance, and low density. Among all ceramic materials, hot-pressed silicon nitride ranks among the hardest, making it a preferred choice for high-stress industrial applications.
Key Properties of Silicon Nitride Ceramics:
- Color: Grey to dark grey
- Density: 3.15–3.25 g/cm³
- Hardness: HRA 92–94
- Maximum Operating Temperature: 1300–1600°C
- Thermal Conductivity: 23–25 W/(m·K)
- Flexural Strength: ≥900 MPa
- Fracture Toughness: 6–8 MPa·m¹ᐟ²
- Thermal Expansion (0–1400°C): 2.95–3 × 10⁻⁶/°C
These characteristics make silicon nitride one of the most thermodynamically stable ceramic materials with excellent wear resistance and thermal shock tolerance.
Main Applications:
- Bearings: Rotating balls and roller elements
- Cutting Tools: Durable tools for machining
- Automotive & Aerospace: Engine valves, rocker arm pads, and sealing faces
- Induction Heating: Coil supports for high-temperature operations
- Turbomachinery: Turbine blades, rotors, and buckets
- Welding & Brazing: Fixtures and jigs
- Heating Systems: Heating element components
- High-Temperature Processing: Crucibles for metal and chemical industries
With a balance of strength, toughness, and resistance to high temperatures, silicon nitride ceramics continue to play a critical role in advancing technologies across multiple industries.
More Product Information:Si3N4 Ceramic Structural Components,Silicon Nitride Ceramic Structural Parts,Si3N4 Ceramic Structural Parts