| 添加Ga、Nb对NdDyTb-FeCo-B烧结磁体显微组织和磁性能的影响 |
| |
| 引用本文： | 周俊琪,张敏刚,孙纲.添加Ga、Nb对NdDyTb-FeCo-B烧结磁体显微组织和磁性能的影响[J].稀土,2005,26(4):79-81. |
| |
| 作者姓名： | 周俊琪 张敏刚 孙纲 |
| |
| 作者单位： | 太原科技大学,材料系,山西,太原,030024 |
| |
| 基金项目： | 山西省攻关项目(002106) |
| |
| 摘 要： | 研究了复合添加Ga、Nb对NdDyTb-FeCo-B烧结磁体的显微组织和磁性能的影响。结果表明:添加0.1%Ga、0.5%Nb磁体的矫顽力iHc、剩磁Br、最大磁能积(BH)max均较好。用SEM电镜对显微组织进行分析,发现添加Ga后晶粒大小均匀,形状规则化。在烧结过程中Ga原子置换Nd2Fe14B相中Fe原子形成Nd2Fe14-xGaxB二次主相,使反磁化核不易形成和扩展,从而改善磁体的磁性能。
|
| 关 键 词： | Nd-Fe-B永磁材料 磁性能 显微组织 |
| 文章编号： | 1004-0277(2005)04-0079-03 |
| 修稿时间： | 2004年6月28日 |
Effect of Ga and Nb on Magnetic Properties and Microstructure of NdDyTb-FeCo-B Sintered Magnet |
| |
| Zhou Jun-qi,ZHANG Min-gang,SUN Gang.Effect of Ga and Nb on Magnetic Properties and Microstructure of NdDyTb-FeCo-B Sintered Magnet[J].Chinese Rare Earths,2005,26(4):79-81. |
| |
| Authors: | Zhou Jun-qi ZHANG Min-gang SUN Gang |
| |
| Abstract: | Magnetic properties and microstructure of NdDyTb-FeCo-B sintered magnet by adding Ga and Nb were investigated. The result showed that, by adding 0.1%Ga,0.5%Nb (mass fraction), the _i H_c,B_r,(BH)_(max) were better. Microstructure analysis by SEM indicates that Ga,Nb addition leads to the homogenization and regularization of grain of the main phase Nd_2Fe_(14)B. Newborn Nd_2Fe_(14-x)Ga_xB hard phases was formed by addition of proper amount Ga,Nb, thus, the nucleation formation and expansion of reverse magnetization domain could be depressed, the magnetic properties of sintered magnet was improved. |
| |
| Keywords: | NdFeB permanent magnet magnetic property microstructure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
