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Nd-(Fe,Co,Zr)-B纳米复合磁体的研究

Study on Nd-(Fe,Co,Zr)-B Nanocomposite Magnets
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摘要 利用XRD,TEM和DTA研究了不同淬火辊速度、晶化处理温度与时间对α-Fe/Nd2Fe14B型Nd10.5Fe78.8-xCo5.0ZrxB5.7纳米晶复合磁体结构和磁性能的影响规律。冷却辊速为25 m.s-1的Nd10.5Fe78.3Co5.0Zr0.5B5.7快淬态条屑具有纳米晶复合磁体结构,不经晶化处理就可获得较好的永磁性能。研究了Zr的添加和晶粒尺寸对性能的影响规律。添加0.5%(原子分数)Zr的合金进行700℃×10 min的晶化处理后可获得较好的永磁性能。分析了微观结构和性能变化的机制。 The effects of different quenching wheel speed, crystallizing treatment temperature and time on microstructures and magnetic properties of Nd10.5Fe78.8-xCo5.0ZrxB5.7 nanocomposite magnets were in-vestigated using XRD, TEM and DTA etc. tech-niques. At quenching wheel speed of 25 m·s^-1, asquenched Nd10.5Fe78.8-xCo5.0ZrxB5.7 alloy could obtain the microstructure of nanocomposite magnets and rea-sonable magnetic properties without crystallizing treat- ment. The effect of Zr addition and grain size on magnetic properties was studied. For the alloy added with 0.5 % Zr, good magnetic properties were obtained after 700℃×10 min crystallizing treatment. The variation mechanism of microstructure and properties of the nanocomposite magnets was also analyzed.
作者 连法增 尤俊华 裴文利 支起铮 杨彬
机构地区 东北大学材料与冶金学院
出处 《中国稀土学报》 CAS CSCD 北大核心 2008年第3期346-350,共5页 Journal of the Chinese Society of Rare Earths
基金 国家科技攻关项目(2004BA31051)资助
关键词 Nd-(Fe CO Zr)-B 纳米复合磁体 结构 磁性 稀土 Nd-（Fe, Co, Zr）-B nanocomposite magnet microstructures magnetic properties rare earths
分类号 TM273 [一般工业技术—材料科学与工程]
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参考文献17

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中国稀土学报
2008年 第3期

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