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利用X射线衍射仪(XRD)和振动样品磁强计(VSM)分别研究了Zr添加对快淬法制备的α-Fe/Pr2Fe14B纳米复合材料的微结构和磁性能的影响规律。通过测量样品的退磁曲线和回复曲线,分析了样品的磁化行为及其交换耦合作用机制。磁性能测试结果表明,当添加1 at%Zr时,磁性能明显得到提升,尤其是矫顽力从470.7 kA/m提升到793.2 kA/m,磁能积从66.8 kJ/m3提高到90.8kJ/m3。回复曲线研究表明,当α-Fe/Pr2Fe14B合金在外磁场的作用下时,1 at%Zr添加的合金具有最小的磁能量损失。
The effects of Zr addition on the microstructure and magnetic properties of α-Fe / Pr2Fe14B nanocomposites prepared by rapid quenching were investigated by X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) respectively. By measuring the demagnetization curve and the recovery curve of the sample, the magnetization behavior and exchange coupling mechanism of the sample were analyzed. The results of the magnetic properties test show that the magnetic properties obviously increase when 1 at% Zr is added, especially the coercivity increases from 470.7 kA / m to 793.2 kA / m, and the magnetic energy product increases from 66.8 kJ / m3 to 90.8 kJ / m3 . Response curve studies show that the alloy with 1 at% Zr has the least loss of magnetic energy when the α-Fe / Pr2Fe14B alloy is exposed to an external magnetic field.