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用机械合金化的方法及退火和渗氮处理,用纯Fe粉和Sm粉制备出内禀矫顽力为33.1kA/cm(41.6kOe)和磁能积为98.7kJ/m~3(12.4MGOe)的Sm—Fe—N永磁材料.用X射线衍射方法对样品制备过程中的机械合金化、晶化、渗氮过程中所形成的相进行了分析,用脉冲磁强计测量磁性实验结果发现,采用高能球磨机是机械合金化的方法制备高矫顽力永磁体的较好工具晶粒尺度为几十nm是获得高矫顽力Sm—Fe—N永磁体的重要因素,样品中存在的软磁第二相是磁滞回线中出现蜂腰形状的主要原因。
By means of mechanical alloying and annealing and nitriding, the intrinsic coercivity of 33.1kA / cm (41.6kOe) and the energy product of 98.7kJ / m ~ 3 (12.4MGOe) were prepared with pure Fe powder and Sm powder. Of the Sm-Fe-N permanent magnet material by X-ray diffraction method for the preparation of the sample during the mechanical alloying, crystallization, nitriding during the formation of the phase were analyzed using a pulsed magnetometer to measure the magnetic experiment results found , The use of high-energy ball mill mechanical alloying method is a good tool for the preparation of high coercivity permanent magnet grain size of tens of nm is to obtain high coercivity Sm-Fe-N permanent magnet an important factor in the sample of the existing soft The second phase of magnetism is the main reason for the appearance of the bee waist in the hysteresis loop.