采用粉末冶金工艺制备了 Sm2Fe17Nx永磁粉末 ,研究了工艺参数对 Sm2Fe17合金的显微组织 及 Sm2Fe17Nx粉末磁特性的影响.结果表明, 铸态合金的均匀化、粉末的氮化以及粉碎过程是获 得高性能磁粉的关键因素.采用最佳工艺条件制备的磁粉的磁特性为: 4π Mr=1.24T, iHc= 756kA/m, (BH)max=220kJ/m3.
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