| Nb添加对Nd-Ce-Fe-B合金的磁性能及晶间交换耦合作用的影响 |
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| 引用本文： | 何伦可,权其琛,胡贤君,江庆政,RehmanSajjad Ur,钟明龙,黎业生. Nb添加对Nd-Ce-Fe-B合金的磁性能及晶间交换耦合作用的影响[J]. 有色金属科学与工程, 2018, 9(5): 103-108. DOI: 10.13264/j.cnki.ysjskx.2018.05.017 |
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| 作者姓名： | 何伦可 权其琛 胡贤君 江庆政 RehmanSajjad Ur 钟明龙 黎业生 |
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| 作者单位： | a.江西理工大学，江西省稀土磁性材料及器件重点实验室 江西 赣州 341000 |
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| 基金项目： | 国家自然科学基金资助项目51661011江西省研究生创新专项项目7C2016-B078 |
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| 摘 要： | 研究了不同含量的Nb添加对(Nd0.5Ce0.5)13Fe82-xNbxB5快淬合金的磁性能、物相组成、交换耦合作用及其初始磁化机制的影响.发现Nb添加能抑制α-Fe的形成，显著改善合金的磁性能.当Nb的添加量(原子分数)为0.5%时，合金获得较优的磁性能.随着Nb的添加量(原子分数)从0增加到0.5%，合金的矫顽力由未添加时的777 kA/m提升到900 kA/m, 最大磁能积也从未添加Nb时的64 kJ/m3增加到78 kJ/m3，而合金的剩磁仅由未添加Nb时的0.71 T轻微下降到0.70 T.合金中晶粒间的交换耦合作用随着Nb的添加而增强.合金的初始磁化机制也有了显著地变化.
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| 关 键 词： | Nb添加 磁性能 交换耦合作用 初始磁化机制 Nd-Ce-Fe-B合金 |
| 收稿时间： | 2018-04-24 |
Effect of Nb doping on the magnetic properties and exchange coupling ofNd-Ce-Fe-B alloy |
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| Affiliation: | a.Jiangxi University of Science and Technology, Jiangxi KeyLaboratory for Rare Earth Magnetic Materials and Devices (IREMMD), Ganzhou 341000, Chinab.Jiangxi University of Science and Technology, School of Materials Science and Engineering, Ganzhou 341000, China |
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| Abstract: | The effects of Nb additions on the magnetic properties, phase composition, exchange coupling and initial magnetization curve of (Nd0.5Ce0.5)13Fe82-xNbxB5melt-spun alloys were investigated in this paper.It is found that the addition of Nb can inhibit the forming of α-Fe and improve significantly the magnetic properties of the alloys.The optimum magnetic properties has been obtained with 0.5 %Nb additions.ThecoercivityHcj and maximum energy product (BH)max increased with increasing Nb content from 0 to 0.5 %.The coercivity increased from 777 kA/m for Nb-free sampleto 900 kA/m for 0.5 % Nb additions sample, and the maximum energy product also varied from 64 kJ/m3 for x=0 to 78 kJ/m3 for x=0.5, while the remanence of alloys decreased from 0.71 to 0.70T, only a slight difference from the Nb-free alloy.The exchange coupling between the grains in the alloy with the addition of Nb has also been enhanced.The obvious difference among the initial magnetization mechanism of the alloy has appeared. |
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