| SPS制备SmCo7-xFex块状纳米晶磁体的研究 |
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| 引用本文： | 潘利军,张东涛,岳 明,李扬超,许 刚,张久兴.SPS制备SmCo7-xFex块状纳米晶磁体的研究[J].稀有金属材料与工程,2009,38(1):161-163. |
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| 作者姓名： | 潘利军 张东涛 岳 明 李扬超 许 刚 张久兴 |
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| 作者单位： | 北京工业大学,新型功能材料教育部重点实验室,北京,100022 |
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| 基金项目： | 国家自然科学基金，北京市自然科学基金重点项目，国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用高能球磨法制得SmCo7-xFex非晶粉末,然后采用放电等离子技术将其烧结为块状纳米晶磁体,对磁体的微观结构和磁性能进行了观察和测试.结果表明,SmCo7-xFex球磨5 h后成为非晶粉末,经SPS烧结后得到1:7相.TEM观察表明,磁体晶粒尺寸在20～50 nm.另外,磁体具有较好的磁性能,当x=0.4时,矫顽力为992.8 kA/m,剩磁为0.634T,(BH)max为69.75KJ/m3.
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| 关 键 词： | SmCo TbCu7 SPS |
| 收稿时间： | 2008/1/27 0:00:00 |
Bulk Nanocrystalline SmCo7-xFex Sintered Magnets Prepared by Spark Plasma Sintering |
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| Pan Lijun,Zhang Dongtao,Yue Ming,Li Yangchao,Xu Gang and Zhang Jiuxing.Bulk Nanocrystalline SmCo7-xFex Sintered Magnets Prepared by Spark Plasma Sintering[J].Rare Metal Materials and Engineering,2009,38(1):161-163. |
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| Authors: | Pan Lijun Zhang Dongtao Yue Ming Li Yangchao Xu Gang and Zhang Jiuxing |
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| Affiliation: | The Key Laboratory of Advanced Functional Materials;Ministry of Education;Beijing University of Technology;Beijing 100022;China |
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| Abstract: | SmCo7-xFex(x=0, 0.4, 1, 2) amorphous powders prepared by high-energy milling were sintered into bulk nanocrystalline magnets using spark plasma sintering technique (SPS). XRD patterns show that the powder becomes amorphous after milled for 5 h; and the magnet exhibits stable TbCu7 structure after sintered by SPS. TEM observation indicates that the microstructure of the magnet is composed of SmCo7-xFex single phase grains with an average grain size of 20~50 nm. Magnetic measurement shows that the SmCo6.6Fe0.... |
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| Keywords: | SmCo TbCu7 SPS |
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