| SPS制备各向异性微米晶SmCo_5烧结磁体的研究 |
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| 引用本文： | 王辉,张东涛,岳明,刘卫强,张久兴.SPS制备各向异性微米晶SmCo_5烧结磁体的研究[J].金属功能材料,2014(3):5-9. |
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| 作者姓名： | 王辉 张东涛 岳明 刘卫强 张久兴 |
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| 作者单位： | 北京工业大学 |
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| 基金项目： | 国家863项目(2012AA603201);新金属材料国家重点实验室开放基金(2011-ZD02);留学人员回国启动基金的支持 |
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| 摘 要： | 采用放电等离子烧结技术制备了各向异性微米晶SmCo_5磁体,研究了磁体的烧结工艺及添加Fe纳米粉对磁体结构和磁性能的影响。研究发现,SmCo_5烧结磁体的最佳烧结温度为830℃,此时磁体的室温磁性能最佳:B_r=8.19 kGs,H_(cj)=10.6 kOe,(BH)_(max)=13 MGOe;而添加Fe纳米粉的烧结磁体,饱和磁化强度升高,但剩磁和矫顽力降低。XRD结果表明,未添加Fe纳米粉的烧结磁体具有单相CaCu_5结构,而添加Fe纳米粉的烧结磁体出现了2∶17相和Fe-Co软磁相。SEM及能谱分析发现,添加的Fe纳米粉扩散进入了1∶5相,形成Sm(Fe,Co)_5和Sm_2(Fe,Co)_(17))。
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| 关 键 词： | SmCo5 放电等离子烧结 Fe纳米粉 |
Study on the Preparation of Anisotropic SmCo_5Sintered Magnet by Spark Plasma Sintering |
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| WANG Hui,ZHANG Dong-tao,YUE Ming,LIU Wei-qiang,ZHANG Jiu-xing.Study on the Preparation of Anisotropic SmCo_5Sintered Magnet by Spark Plasma Sintering[J].Metallic Functional Materials,2014(3):5-9. |
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| Authors: | WANG Hui ZHANG Dong-tao YUE Ming LIU Wei-qiang ZHANG Jiu-xing |
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| Affiliation: | (The Key Laboratory of Advanced Functional Materials,Ministry of Education, Beijing University of Technology, Beijing 100124,China) |
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| Abstract: | Anisotropic microgram SmCo_5 sintered magnet was prepared by spark plasma sintering technique（SPS）.The preparation process of the SmCo_5 magnets was studied as well as the properties and structure of SmCo_5 magnets doping with Fe nano-powders.The optimal magnetic properties of the SmCo_5 magnet are B_r of 8.19 kGs,H_（cj） of10.6 kOe and（BH）_（max） of 13 MGOe when the sintering temperature is 830 ℃.Moreover,the SmCo_5 magnet doping with Fe nano-powders shows higher magnetization,but lower remanence and coercivity.XRD patterns showed that the SmCo_5 magnet exhibits CaCu_5 structure,however,2：17 phase and Fe-Co phase appear in the SmCo_5 magnet doping with Fe nano-powders.SEM and EDS analysis indicate that the microstructure of the SmCo_5 magnet doping with Fe nano-powders is composed of 1：5 phase and 2：17 phase. |
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| Keywords: | SmCo_5 spark plasma sintering Fe nano-powders |
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