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.[Zhang Tianli,Wang Wenlong,Xu Cheng,Wang Hui,Zhang Wei,Zhang Zhihong,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.]
z值影响Sm(CoFeCuZr)z磁性能的机理研究
投稿时间:2017-11-23  修订日期:2017-12-22
中文关键词:  Sm(CoFeCuZr)z磁体  z值  磁性能  微观结构  Cu元素分布
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)
中文摘要:
      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Hk/Hcj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Hcj的大小,在一定范围内(z<8.2)该位置Cu含量越高,矫顽力越大。
Mechanism research of z Value Affecting Magnetic Properties of Sm(CoFeCuZr)z
英文关键词:Sm(CoFeCuZr)z  z value  magnetic property  microstructure  distribution of Cu element
英文摘要:
      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.
作者单位E-mail
张天丽 北京航空航天大学材料科学与工程学院 tlzhang@buaa.edu.cn 
王文龙 北京航空航天大学材料科学与工程学院 wangwenlooong@foxmail.com 
徐成 北京航空航天大学材料科学与工程学院  
王慧 北京航空航天大学材料科学与工程学院  
张伟 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  
张志宏 包头稀土研究院  
蒋成保 北京航空航天大学材料科学与工程学院  
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