| NdFeB磁粉对粘结NdFeB/锶铁氧体复合磁体性能的影响 |
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| 引用本文： | 钟喜春,黄有林,刘云鹤,刘仲武,曾德长.NdFeB磁粉对粘结NdFeB/锶铁氧体复合磁体性能的影响[J].电子元件与材料,2012(10):41-44. |
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| 作者姓名： | 钟喜春 黄有林 刘云鹤 刘仲武 曾德长 |
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| 作者单位： | 华南理工大学材料科学与工程学院 |
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| 基金项目： | 广东省教育部产学研结合项目资助(No.2010A090200042;No.2009B090300273);国家自然科学基金资助项目(No.U0734001;No.50874050);中央高校基本科研业务费专项资金资助项目(No.2012ZZ0013;No.2011ZM0014) |
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| 摘 要： | 采用流动温压成型技术制备了各向同性粘结NdFeB/锶铁氧体复合磁体。研究了不同类型NdFeB磁粉对粘结NdFeB/锶铁氧体复合磁体磁性能和交换耦合作用的影响。结果表明,粘结贫稀土NdFeB/锶铁氧体复合磁体的综合磁性能最好,当NdFeB和铁氧体的质量比为3:2时,其磁性能Br=0.38 T,Hcj=524 kA/m,(BH)max=21.9 kJ/m3;另外,其Henkel曲线为典型的S型曲线。粘结纳米双相NdFeB/锶铁氧体复合磁体内的交换耦合作用近乎消失,磁体内以静磁交互作用为主。
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| 关 键 词： | 粘结复合磁体 磁性能 Henkel曲线 矫顽力温度系数 |
Effects of NdFeB powder on the magnetic properties of bonded NdFeB/Sr-ferrite hybrid magnets |
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| ZHONG Xichun,HUANG Youlin,LIU Yunhe,LIU Zhongwu,ZENG Dechang.Effects of NdFeB powder on the magnetic properties of bonded NdFeB/Sr-ferrite hybrid magnets[J].Electronic Components & Materials,2012(10):41-44. |
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| Authors: | ZHONG Xichun HUANG Youlin LIU Yunhe LIU Zhongwu ZENG Dechang |
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| Affiliation: | (School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | Isotropic bonded NdFeB/Sr-ferrite hybrid magnets were synthesized by using the warm flow compaction(WFC) technique.The effects of different types of NdFeB powder on the magnetic properties of and the exchange-coupling interaction in the bonded NdFeB/Sr-ferrite hybrid magnets were studied.The results show that the magnet made with the lean rare earth NdFeB powder shows the best performance;its Henkel plot is a typical S-curve,and its Br,Hcj and(BH)max are 0.38 T,524 kA/m and 21.9 kJ/m3 respectively when the mass ratio of NdFeB to ferrite is 3:2.In the magnet made with the nano-duplex NdFeB powder,there is almost no exchange-coupling interaction found and the magnetic interaction is mainly the magnetostatic interaction. |
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| Keywords: | bonded hybrid magnet magnetic properties Henkel plot temperature coefficient of coercivity |
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