以雾化Fe粉和FeSi合金粉末为原料,采用放电等离子烧结(SPS)制备Fe-6.5%Si高硅硅钢片,通过XRD,SEM等测试手段对样品进行分析。结果表明,铁硅合金的烧结过程可以分为4个阶段;当温度为1 100℃时气孔率为1.48%;烧结过程中主要发生以Fe3Si颗粒为核心反应扩散,烧结初期为颗粒间的紧密结合,烧结中期颗粒的界面处有Fe3Si相生成,形成FeSi过渡层,烧结后期直接形成了Fe(Si)的单一固溶体相。 Fe-6.5% Si high-silicon-silicon steel sheets were prepared by spark plasma sintering (SPS) using atomized Fe powder and FeSi alloy powder as raw materials. The samples were analyzed by XRD and SEM. The results show that the sintering process of Fe-Si alloy can be divided into four stages; when the temperature is 1 100 ℃, the porosity is 1.48%; Fe3Si particles as the core react and diffuse mainly during the sintering process; , Fe3Si phase was formed at the interface of particles in the middle stage of sintering, a FeSi transition layer was formed, and a single solid solution phase of Fe (Si) was formed directly in the late stage of sintering.