Fe-based cermets are of considerable research interest owing to their excellent physical and mechanical properties. In this study, a new process for the reduction and nitridation of Panzhihua ilmenite using NH₃ was proposed to prepare Fe-TiN composites, and the process was deemed feasible by thermodynamic calculations. The final products, Fe and TiN, could be formed based on the reaction conditions. The experimental results validated that metallic Fe could be easily formed, while MgTiO₃ was more difficult to reduce than FeTiO₃. The final products of Fe/TiN/MgO obtained at 1373–1473 K were consistent with those from the thermodynamic analysis. By increasing the reduction temperature or duration, the Fe particles increased in size and mixed with the TiN particles. The elemental content of Mg, Al, and Ca in the magnetic product was 5.85 wt% after magnetic separation. A Fe-TiN cermet was prepared from the magnetic product by hot-pressing (HP) sintering. Fe and TiN were uniformly distributed in the cermet, and the hardness of the obtained cermet reached 18.2 GPa. This work could offer a new approach to the preparation of Fe-based cermets from low-grade ilmenite.

铁基金属陶瓷由于其优异的物理和机械性能而引起了相当大的研究兴趣。本研究提出了利用NH ₃对攀枝花钛铁矿进行还原氮化制备Fe-TiN复合材料的新工艺，热力学计算认为该工艺可行。最终产物 Fe 和 TiN 可以根据反应条件形成。实验结果验证了金属Fe容易形成，而MgTiO _{3比FeTiO 3}更难还原。. 在 1373-1473 K 获得的 Fe/TiN/MgO 的最终产物与热力学分析的结果一致。通过增加还原温度或持续时间，Fe 颗粒尺寸增加并与 TiN 颗粒混合。磁选后磁性产品中Mg、Al和Ca的元素含量为5.85 wt%。通过热压（HP）烧结由磁性产品制备Fe-TiN金属陶瓷。Fe和TiN均匀分布在金属陶瓷中，得到的金属陶瓷硬度达到18.2 GPa。这项工作可以为从低品位钛铁矿制备铁基金属陶瓷提供一种新方法。