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合金成分对Pr_2Fe_(14)B/α-Fe纳米复合永磁材料组织与磁性的影响 被引量：6

Influence of compositions on microstructure and magnetic properties of nanocomposite Pr_2Fe_(14)B/α-Fe permanent alloys
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摘要 用XRD、TEM、Mossbauer谱和VSM等实验方法,研究了不同Pr含量、B含量和Cu含量的Pr2Fe14B/α Fe型纳米复合快淬带的显微结构与磁性。结果表明:PrxFe94-xB6合金在x=8(α Fe体积分数约30%)时磁性能最佳,Br=1.29T,Hci=461.7kA/m,(BH)max=165.6kJ/m3;Pr8.5(Fe0.8Co0.2)86.5-xCuxB5合金在x=0.5时获得最佳的磁性能;随B含量增加,富B相在晶界分布,Pr8Fe92-xBx交换耦合减弱,磁性能单调下降。 Microstructure and magnetic properties of nanocomposite Pr2Fe14B/αFe ribbons with different Pr, B and Cu contents, prepared by meltspinning or subsequent annealing were investigated by the methods of XRD, TEM, Mossbauer and VSM. As a result, the excellent magnetic properties with Br=1.29 T, Hci=461.7 kA/m, (BH)max =165.6 kJ/m3 are obtained in PrxFe94-xB6 ribbons with x=8. High performance is also achieved in Pr8.5(Fe0.8Co0.2)86.5-xCuxB5 ribbons with x=0.5. As the content of B in Pr8Fe92-xBx ribbons increases, the distribution of Brich phases at intergranular regions results in the weakening of exchange coupling and the decreasing of magnetic properties.
作者 包小倩 周寿增 王佐诚 张茂才 乔祎 刘湘华
机构地区 北京科技大学新金属材料国家重点实验室
出处 《中国有色金属学报》 EI CAS CSCD 北大核心 2003年第2期414-418,共5页 The Chinese Journal of Nonferrous Metals
基金 国家自然科学基金资助项目(10074005)
关键词 纳米复合水磁 熔体快淬 磁性能 永磁材料 合金成分 显微结构 nanocomposite permanent magnets melt-spinning magnetic properties
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15

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中国有色金属学报
2003年 第2期

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