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发明公开
CN1943923A 钐铁氮－铁铂双相纳米磁性材料及其制备方法 失效 - 权利终止

钐铁氮－铁铂双相纳米磁性材料及其制备方法
摘要：
本发明钐铁氮－铁铂双相纳米磁性材料及其制备方法涉及按其矫顽力区分的无机材料磁体，该材料的组成为Sm2Fe17N3－Fe3Pt，晶粒尺寸d≤30nm，基体相是硬磁性相2∶17型稀土铁氮化物，它的易轴是取向的，软磁性相Fe3Pt具有纳米级体心立方相，高度弥散地分布在基体相内；其制备方法采用了原位自生制备方法，工艺过程如下：(1)母合金的熔炼，(2)合金的甩带(3)非晶合金薄带的晶化。本发明的磁性材料具有硬磁性相和软磁性相界面发生的交换耦合作用，发挥了磁性能的潜力，比单相硬磁材料有更高的磁学性能。
摘要（英）：

The present invention relates to inorganic magnetic material, and is especially double phase nanometer composite material of samarium-iron-nitrogen and iron-platinum. The double phase nanometer composite material has the composition of Sm2Fe17N3-Fe3Pt, crystal grain size not greater than 30 nm, base phase of hard magnetic RE-Fe nitride and soft of nanometer BCC Fe3Pt and dispersed in the base phase, and oriented easy axis. The double phase nanometer composite material is prepared through an in-situ autogenesis process including the steps of smelting mother alloy, forming alloy belt, and crystallizing. The magnetic material of the present invention possesses exchange coupling effect in the phase interface between the hard magnetic phase and the soft magnetic phase and high magnetic performance.

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