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| 钆对烧结钕铁硼磁体磁性能和相结构的影响 | |
| 引用本文： | 刘国征,赵明静,赵瑞金,刘小鱼,鲁富强,李波. 钆对烧结钕铁硼磁体磁性能和相结构的影响[J]. 稀有金属, 2010, 34(1). DOI: 10.3969/j.issn.0258-7076.2010.01.023 |
| 作者姓名： | 刘国征 赵明静 赵瑞金 刘小鱼 鲁富强 李波 |
| 作者单位： | 1. 包头稀土研究院功能材料研究中心,内蒙古,包头,014030;钢铁研究总院安泰功能材料事业部,北京,100083 2. 稀土冶金及功能材料国家工程研究中心功能材料工程化实验室,内蒙古,包头,014030 3. 包头稀土研究院功能材料研究中心,内蒙古,包头,014030 4. 钢铁研究总院安泰功能材料事业部,北京,100083 |
| 基金项目： | 国家自然科学基金项目 |
| 摘 要： | 通过电弧炉冶炼合金,采用球磨制粉,在磁场下取向成型,真空烧结和热处理制备了Nd17-xRxFe76.5B6.5磁体,研究了在钕铁硼永磁体中用稀土Gd部分地代替钕时对永磁体的磁性能随Gd含量的变化。实验结果表明:在一定的烧结及热处理工艺条件下,Nd17-xRxFe76.5B6.5磁体在Gd含量小于5%(原子分数)时,Gd对磁体的剩磁和内禀矫顽力影响相对较小,当Gd含量5%时,磁体磁性能急剧下降。显微成分分析表明,在合金铸态下,Gd可抑制合金的α-Fe相的析出;在磁体中,Gd进入主相是降低磁体矫顽力的主要原因。 |
| 关 键 词： | 钕铁硼 磁性能 相结构 钆 |
Influence of Substitution of Gd for Nd on Microstructure and Properties of Sintered Nd-Fe-B Magnets |
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| Liu Guozheng,Zhao Mingjing,Zhao Ruijin,Liu Xiaoyu,Lu Fuqiang,Li Bo. Influence of Substitution of Gd for Nd on Microstructure and Properties of Sintered Nd-Fe-B Magnets[J]. Chinese Journal of Rare Metals, 2010, 34(1). DOI: 10.3969/j.issn.0258-7076.2010.01.023 | |
| Authors: | Liu Guozheng Zhao Mingjing Zhao Ruijin Liu Xiaoyu Lu Fuqiang Li Bo |
| Affiliation: | Liu Guozheng1,3,Zhao Mingjing2,Zhao Ruijin1,Liu Xiaoyu1,Lu Fuqiang2,Li Bo3 (1. Research Center of Function Materials,Baotou Research Institute of Rare Earth,Baotou 014030,China,2. Laboratory of Function Materials Engineerization,National Engineering Research Centre of Rare Earth Metallurgy , Functional Materials,3. Department of Function Materials,Advanced Technology , Materials Co.,Ltd,China Iron & Steel Research Institute Group,Beijing 100081,China) |
| Abstract: | The influence of substitution of Gd for Nd on microstructure and properties of Nd17-xRxFe76.5B6.5(x=0~12) magnets was investigated. Alloys with the composition of Nd17-xRxFe76.5B6.5 were smelted into ingots in electric arc furnace in Ar gas. Powders were obtained by ball-milling and were oriented in a magnetic field magnet and pressed under pressure,and then sintered and annealed in vacuum environment. The results showed that the remanence and intrinsic coercivity decreased slowly for Nd17-xRxFe76.5B6.5,whe... |
| Keywords: | sintered NdFeB magnet magnetic properties microstructure gadolinium |
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