In high-temperature scientific research and precision experiments, silicon nitride (Si₃N₄) crucibles are the ideal choice due to their exceptional resistance to heat, chemical inertness, and high mechanical strength. Their outstanding properties not only enhance laboratory safety and reliability but also save researchers significant time and cost.
Key Technical Parameters
| Property | Typical Value | Practical Benefit |
|---|---|---|
| Maximum Working Temperature (Air) | 1200 °C | Suitable for most high-temperature reactions |
| Maximum Working Temperature (Inert Atmosphere) | 1600 °C | Enables use in specialized environments |
| Thermal Expansion Coefficient (RT–1000 °C) | 3.2 ×10⁻⁶ /K | Excellent thermal stability, minimal dimensional change |
| Thermal Conductivity | 20–30 W/m·K | Faster heat transfer, shorter experiment cycles |
| Flexural Strength | ≥ 600 MPa | Strong and durable, reducing breakage |
| Compressive Strength | ≥ 2500 MPa | Reliable under high-pressure conditions |
| Fracture Toughness | 6–7 MPa·m¹/² | Superior crack resistance |
| Chemical Resistance | Acid/alkali/molten metals | Maintains sample purity, avoids contamination |
Typical Laboratory Applications
- High-Temperature Chemical Reactions
- Ideal for synthesis and analysis of ceramics, powder metallurgy, and advanced materials.
- Chemically inert, ensuring contamination-free results and reliable experimental data.
- Metal and Alloy Melting Experiments
- Suitable for melting titanium, nickel-based superalloys, and other high-temperature metals.
- More durable and reusable than quartz crucibles.
- Single Crystal Growth and Semiconductor Research
- Widely used in silicon ingot melting and crystal growth experiments.
- High purity and thermal conductivity ensure superior crystal quality and energy efficiency.
- Furnace Experiments and Thermal Analysis
- Compatible with tube furnaces and box furnaces.
- Commonly used for TGA/DSC thermal analysis, where stable performance is essential.
Conclusion
With their thermal resistance, chemical inertness, mechanical strength, and contamination-free performance, silicon nitride crucibles are becoming the preferred choice for research laboratories and industrial R&D worldwide.
At GESMaterials, we offer high-quality Si₃N₄ crucibles designed to meet the needs of both laboratories and enterprises. Custom sizes and shapes are available, helping researchers achieve more precise, efficient, and reliable experimental results.