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首页> 外文期刊>Magnetics, IEEE Transactions on >Enhanced Magnetic Properties and Thermal Stability of Nd2Fe14B/SmCo5 Composite Permanent Magnets Prepared by Spark Plasma Sintering
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Enhanced Magnetic Properties and Thermal Stability of Nd2Fe14B/SmCo5 Composite Permanent Magnets Prepared by Spark Plasma Sintering

机译：火花等离子体烧结制备Nd 2 Fe 14 B / SmCo 5 复合永磁材料的增强磁性能和热稳定性

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摘要

Nanocomposite NdFeB/SmCo permanent magnets with different weight ratios have been prepared by spark plasma sintering mixtures of homemade amorphous SmCo powders and commercially available NdFeB powders. The magnetic properties of the nanocomposite magnets are sensitive to the ratio of the two hard phases. The peak (BH) value of 14.4 MGOe is obtained at the SmCo/NdFeB ratio of 4:1, which is % higher than that of the single-phase SmCo magnet prepared under the same preparation conditions. Hysteresis loop of the nanocomposite magnet shows the characteristics of single-phase magnet due to strong exchange coupling between the two phase grains. At high temperatures, the nanocomposite magnets exhibit greatly improved thermal stability compared with the single-phase NdFeB magnet.
机译：通过火花等离子体烧结自制无定形SmCo粉末和市售NdFeB粉末的混合物，可以制备出具有不同重量比的纳米复合NdFeB / SmCo永磁体。纳米复合磁体的磁性对两个硬相的比率敏感。在4：1的SmCo / NdFeB比下获得14.4 MGOe的峰值（BH），比在相同制备条件下制备的单相SmCo磁体的峰值高％。由于两相晶粒之间的强交换耦合，纳米复合磁体的磁滞回线显示出单相磁体的特性。在高温下，与单相NdFeB磁体相比，纳米复合磁体表现出极大的热稳定性。

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