Ferrosilicon nitride (Fe-Si?N?) is mainly Si?N? with dispersed iron, residual silicon, and trace elements, giving it unique properties.

Synthesis Methods and Processes

Ferrosilicon nitride is produced by various methods, including direct nitridation, carbothermal reduction, flash combustion, and molten silicon-iron nitridation, each yielding different phase compositions and microstructures.
Flash combustion synthesis—originally for metal nitridation—is now used in refractory production. In this process, ferrosilicon and silicon powder are fed into a 1200°C reactor under nitrogen. The particles disperse, rapidly heat up, and react exothermically in the combustion zone. The self-sustaining reaction produces high-purity, free-silicon-free material suitable for large-scale manufacturing.

Product Specifications (%)

Si: 47–51%
N: 28–31%
Fe: 12–17%
S, P: ≤0.03%
C: ≤0.5%
Particle Sizes: Commonly available as 200 mesh, 0–3 mm, and 5–50 mm. Custom sizes can be provided based on specific customer requirements.

Key Properties of Ferrosilicon Nitride

Thermal Stability: Maintains structural integrity at high temperatures with minimal thermal expansion, widely used in metallurgy, glass, and other high-temperature industries.

High Hardness and Wear Resistance: Offers superior hardness and wear resistance compared to conventional hard alloys, enhancing tool life and processing efficiency in cutting and grinding applications.

Chemical Stability: Resists corrosion from acids and alkalis, making it suitable for chemical equipment and refractory linings.

Thermal Conductivity: Exhibits high thermal conductivity, enabling efficient heat transfer in thermal management systems and heat-conducting components.

Electrical Insulation: Maintains stable electrical insulation performance under high-temperature and high-voltage conditions, used in insulators and power equipment.

Conclusion

With continuous advancements in technology and manufacturing, the application of ferrosilicon nitride is expanding—from traditional heavy industries to modern electronics—becoming an increasingly essential material.

LSFerroalloy, with over 20 years of experience in ferroalloy production, is committed to delivering high-quality, high-performance materials that offer customers cost-effective and efficient solutions. For more information or to discuss collaboration opportunities, please contact our professional team.