Influence mechanism of Fe content on the magnetic properties of Sm2Co17-type sintered magnets: Microstructure and Microchemistry
Influence mechanism of Fe content on the magnetic properties of Sm2Co17-type sintered magnets: Microstructure and Microchemistry
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Fe含量对Sm2Co17型烧结磁体磁性能的影响机制：显微组织和微观化学
DOI：
10.1016/j.jallcom.2019.152908
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发表时间：
2020-03
影响因子：
6.2
通讯作者：
Ge Hongliang
中科院分区：
文献类型：
--
作者：
Yu Nengjun;Gao Wuyi;Pan Minxiang;Yang Hangfu;Wu Qiong;Zhang Pengyue;Ge Hongliang
研究了Fe含量对Sm（Co0.925-xFexCu0.05Zr0.025）7.74（x = 0.21-0.31）烧结磁体磁性能和显微结构的影响。通过对胞状/片层结构、胞相和胞壁相元素分布的综合分析，研究了Fe含量对磁体剩磁（Br）和内禀矫顽力（Hcj）的影响机理。分析认为，胞状结构不完整、胞壁相Cu含量低、Fe含量高是x = 0.31时磁体矫顽力低的主要原因。x在0.27 ~ 0.31范围内的磁体的Br线性增加斜率比x在0.21 ~ 0.27范围内的磁体的Br线性增加斜率小，表明磁体的Brenhancement效率较低，这主要是由于x > 0.27的磁体的胞壁相Fe含量较高所致。Sm（Co_（0.655）Fe_（0.27）Cu_（0.05）Zr_（0.025））_（7.74）磁体的最大磁能积（BH）_（max））为32.36 MGOe，aHcj为34.62 kOe。
The effects of the Fe content on the magnetic properties and the microstructures of the Sm(Co0.925-xFexCu0.05Zr0.025)7.74(x = 0.21–0.31) sintered magnets were investigated. The influence mechanism of the Fe content on the remanence (Br) and intrinsic coercivity (Hcj) of the magnets were studied depending on the comprehensive analysis of the cellular/lamellar structures and the element distribution of the cell and cell wall phases. The incomplete cellular structure, lower Cu content and higher Fe content of the cell wall phases were considered as the main reasons for the lowHcjof the magnet with x = 0.31. The slope of linear increase of theBrof the magnet with x range from 0.27 to 0.31 is lower than that of the magnet with x range from 0.21 to 0.27 indicating a lowerBrenhancement efficiency which is mainly caused by the high Fe content of the cell wall phase of the magnet with x > 0.27. A high maximum energy product ((BH)max) of 32.36 MGOe with aHcjof 34.62 kOe was obtained for the Sm(Co0.655Fe0.27Cu0.05Zr0.025)7.74magnet.
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影响因子：
6
作者：
X. Zhiqin;L. Liu;Zhuang Liu;M. Li;Don Lee;R. Chen;Y. Guo;A. Yan
通讯作者：
X. Zhiqin;L. Liu;Zhuang Liu;M. Li;Don Lee;R. Chen;Y. Guo;A. Yan
影响因子：
6.2
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1.2
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影响因子：
6.2
作者：
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Y. Fang;H. Chang;Zhanhu Guo;Tao Liu;X. Li;Wei Li;W. Chang;B. Han
晶界Cu再分布对Sm(Co0.665Fe0.25Cu0.06Zr0.025)7永磁体磁性能的影响
影响因子：
6.2
作者：
Wang, Y. Q.;Yue, M.;Du, Y. H.
通讯作者：
Du, Y. H.