| z值影响Sm(CoFeCuZr)z磁性能的机理研究 |
| |
| 引用本文： | 张天丽,王文龙,徐成,王慧,张伟,张志宏,蒋成保.z值影响Sm(CoFeCuZr)z磁性能的机理研究[J].稀有金属材料与工程,2019,48(5):1567-1572. |
| |
| 作者姓名： | 张天丽 王文龙 徐成 王慧 张伟 张志宏 蒋成保 |
| |
| 作者单位： | 北京航空航天大学;包头稀土研究院白云鄂博稀土资源研究与综合利用国家重点实验室 |
| |
| 基金项目： | 国家自然科学基金资助(项目号No.51471016)和北京市自然科学基金资助(项目号No.2151002) |
| |
| 摘 要： | 通过粉末冶金法制备了不同z值(z=7.5～8.5)的Sm(CoFeCuZr)_z磁体。利用磁性能测量系统、X射线衍射分析、电子探针以及透射显微镜等对磁体的性能、组成相、析出相含量、微观结构及元素分布进行表征,通过分析解释了磁性能随z值变化的内在机理。结果表明:随z值增大,胞状结构尺寸增大,高饱和磁化强度的2:17R相增多导致剩磁Br升高;z值增大导致富Zr析出相增多,引起方形度H_k/H_(cj)下降;z值通过改变Cu元素在2:17R相界面位置的富集程度来改变矫顽力H_(cj)的大小,在一定范围内(z8.2)该位置Cu含量越高,矫顽力越大。
|
| 关 键 词： | Sm(CoFeCuZr)z磁体 z值 磁性能 微观结构 Cu元素分布 |
| 收稿时间： | 2017/11/23 0:00:00 |
| 修稿时间： | 2017/12/22 0:00:00 |
Mechanism research of z Value Affecting Magnetic Properties of Sm(CoFeCuZr)z |
| |
| Zhang Tianli,Wang Wenlong,Xu Cheng,Wang Hui,Zhang Wei,Zhang Zhihong and Jiang Chengbao.Mechanism research of z Value Affecting Magnetic Properties of Sm(CoFeCuZr)z[J].Rare Metal Materials and Engineering,2019,48(5):1567-1572. |
| |
| Authors: | Zhang Tianli Wang Wenlong Xu Cheng Wang Hui Zhang Wei Zhang Zhihong and Jiang Chengbao |
| |
| Affiliation: | School of Materials and Engineering,Beihang University,School of Materials and Engineering,Beihang University,School of Materials and Engineering,Beihang University,School of Materials and Engineering,Beihang University,State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou,School of Materials and Engineering,Beihang University |
| |
| Abstract: | The Sm (CoFeCuZr)z permanent magnets with different z values (z=7.5~8.5) were prepared by powder metallurgy. The properties, constituent phase, precipitated-phase content, microstructure and element distribution of the magnet were characterized by magnetic measurement system, X ray diffraction analysis, electron probe and transmission electron microscope. Magnetic properties change with z value, and the inherent mechanism is explained in this essay. The results show that the increase of z value leads to the increase in the size of cell structure and the 2:17R phase with high saturation magnetization, which finally results in the improvement of remanence Br. The precipitated Zr-riched phase increases with the z value increases, which has a weakening effect on the squareness Hk/Hcj. The z value changes the enrichment of Cu element at the edge of 2: 17R phase, which has a significant effect to the coercivity Hcj. Within the certain range (z <8.2), the higher the content of Cu at that edge, the larger the coercivity is. |
| |
| Keywords: | Sm(CoFeCuZr)z z value magnetic property microstructure distribution of Cu element |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 |
|
点击此处可从《稀有金属材料与工程》下载全文 |
|
