| 各向异性HDDR工艺Nd(Fe,Co)B粘结磁体的反磁化过程和矫顽力 |
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| 引用本文： | 高汝伟,孟宪洪,张永军,张建成.各向异性HDDR工艺Nd(Fe,Co)B粘结磁体的反磁化过程和矫顽力[J].功能材料,2000,31(2):134-135. |
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| 作者姓名： | 高汝伟 孟宪洪 张永军 张建成 |
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| 作者单位： | 1. 山东大学物理系,山东 济南250100
2. 山东省冶金科学研究院,山东 济南250014 |
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| 基金项目： | 国家自然科学基金，山东省自然科学基金 |
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| 摘 要： | 研究了取向磁场对ＨＤＤＲ工艺制备的各向异性Ｎｄ（Ｆｅ，Ｃｏ）Ｂ粘结磁体顽力的影响。实验指出：阴着施加取向磁场强度的逐渐增强，磁体的制磁和矫顽力不同程度的增加。磁体的反磁化过程包括晶粒内部的成核过程和晶粒之间的畴壁位移过程，矫力应由两种反磁化过程的共同作用决定。
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| 关 键 词： | HDDR 粘结磁体 反磁化过程 矫顽力 永磁材料 |
| 文章编号： | 1001－9731(2000)02－0134－02 |
| 修稿时间： | 1998－11－13 |
Demagnetization and the Coercivity for Nd(Fe, Co)B Bonded Magnets Made from HDDR Anisotropic Powders |
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| GAO Ruwei,MENG Xianhong,ZHANG Yongjun,ZHANG Jiancheng.Demagnetization and the Coercivity for Nd(Fe, Co)B Bonded Magnets Made from HDDR Anisotropic Powders[J].Journal of Functional Materials,2000,31(2):134-135. |
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| Authors: | GAO Ruwei MENG Xianhong ZHANG Yongjun ZHANG Jiancheng |
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| Affiliation: | GAO Ruwei
,ZHANG Jiancheng
(Physles Department, Shandong University, Ji'nan, 250100, China)MENG Xianhong
,ZHANG Yongjun
(Shandong Metallurgical Research Institute, Ji' nan,250014, China) |
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| Abstract: | The dependence of coercivity for Nd(Fe,Co)B bonded magnets made from HDDR anisotropic powders on the alignment magnetic field is studied.The experiments express that applying an alignment magnetic field while the powders are bonded,both remanence and coercivity of the magnet are increased in different degrees with strengthening alignment field.The demagnetization process of the magnet can be classified as the nucleaiton process inside the grains and the domain-wall displacement between the grains.The coercivity of the magnet should be determined by the collective effects of two processes. |
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| Keywords: | Nd(Fe Co)B HDDR anisotropic bonded magnets demagnetization process coercivity |
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