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Ce掺杂Nd-Fe-B永磁合金的结构及磁性能研究
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南昌航空大学材料科学与工程学院,南昌航空大学材料科学与工程学院,南昌航空大学材料科学与工程学院,南昌航空大学材料科学与工程学院,南昌航空大学材料科学与工程学院,江西理工大学稀土磁性材料及器件研究所

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TM273

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国家自然科学(51401103和11304146以及51564037)和江西省自然科学基金(20151BAB216003和20151BAB212005以及 20161BAB206110)和航空基金(2014ZF56017)资助


Effects of Ce doping on the structure and magnetic properties for NdFeB alloy
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School of Materials Science and Engineering,Nanchang Hangkong University,School of Materials Science and Engineering,Nanchang Hangkong University,School of Materials Science and Engineering,Nanchang Hangkong University,School of Materials Science and Engineering,Nanchang Hangkong University,School of Materials Science and Engineering,Nanchang Hangkong University,Institute for Rare Earth Magnetic Materials and Devices,Jiangxi University of Science and Technology

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    摘要:

    本文通过电弧熔炼和熔体快淬技术制备了不同甩帯速度和Ce含量的(Nd1-xCex)2Fe14B合金薄带,研究发现,薄带主要由主相Nd2Fe14B和一定量α-Fe相组成。不同的甩带速度对样品的磁性能影响显著,其中甩带速度为30m/s所制备薄带的磁性能最佳。随着Ce含量的增加,薄带的磁性能整体呈下降趋势,矫顽力从x=0时的800kA/m下降到x=0.5时的413kA/m。但在x=0.2时,矫顽力可达594 kA/m,呈现反常增加现象,这与物质稀释定律相反,这可能归因于Ce混合价态所导致的相分离。x=0.25时,相比未添加Ce的样品,最大磁能积几乎没有下降,这表明Ce在稀土永磁中应用潜力巨大。

    Abstract:

    (Nd1-xCex)2Fe14B ribbons were prepared by arc melting followed by melt spinning. It is found that the ribbons are mainly composed of the main phase Nd2Fe14B and α-Fe phase. The optimum magnetic properties can be obtained using the wheel velocity of 30 m/s. With increasing the Ce content, the coercivity reduces from 800 kA/m when x=0 to 413 kA/m when x=0.5. However, the coercivity is anomalously high when the 20% Nd is replaced by Ce. It is attributed to the phase segregation induced by mixed valence state of Ce. No reduction in the maximum energy product is demonstrated when x=0.25. It is suggested that Ce has a great potential application in the permanent magnetic materials.

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汪元亮,张国清,黄有林,侯育花,郭开祥,钟震晨. Ce掺杂Nd-Fe-B永磁合金的结构及磁性能研究[J].稀有金属材料与工程,2018,47(1):146~150.[Wang Yuanliang, Zhang Guoqing, Huang Youlin, Hou Yuhua, Guo Kaixiang, Zhong Zhenchen. Effects of Ce doping on the structure and magnetic properties for NdFeB alloy[J]. Rare Metal Materials and Engineering,2018,47(1):146~150.]
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  • 收稿日期:2016-11-10
  • 最后修改日期:2017-01-16
  • 录用日期:2017-01-23
  • 在线发布日期: 2018-02-07
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