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作者:

Shang, Zhifeng (Shang, Zhifeng.) | Zhang, Dongtao (Zhang, Dongtao.) | Xie, Zhihong (Xie, Zhihong.) | Wang, Yunqiao (Wang, Yunqiao.) | Haseeb, Muhammad (Haseeb, Muhammad.) | Qiao, Pengbiao (Qiao, Pengbiao.) | Liu, Weiqiang (Liu, Weiqiang.) | Yue, Ming (Yue, Ming.) (学者:岳明)

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摘要:

The evolution of the microstructure, microchemistry and magnetic properties of the Sm(CobalFe0.28-CuyZrx)(7.6) magnets with different Zr and Cu contents was investigated. It is found that the coercivity of the Sm(Co,Fe,Cu,Zr)z magnets is sensitive to Zr content. The deficiency of Zr content causes heterogeneity of Cu and Fe distributions, while an excessive Zr content leads to the formation of a SmCoZr impurity phase. The cellular structure and distribution of Cu concentration gradient between the cell boundary phase and cell phase are destroyed by inappropriate Zr content, which results in a reduction of coercivity. The Cu concentration difference between the cell boundary phase and cell phase increases with increasing Cu content. The coercivity of the Sm(CobalFe0.28CuyZr0.02)(7.6) magnets increases from 10.4 to 25.4 kOe for y = 0.05 and y = 0.07. However, the excess of Cu element destroys the cell boundary phase and enlarges the cell size, resulting in a significant decrease of squareness and energy density. The optimum performance (remanence of 11.4 kG, coercivity of 25.4 kOe, maximum magnetic energy product of 30.4 MGOe) was obtained for the Sm(Co0.63Fe0.28Cu0.07Zr0.02)(7.6) magnet. (C) 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.

关键词:

Microstructure Zr Magnetic properties Composition distribution Cu Sm(CoFeCuZr)(z) permanent magnets

作者机构:

  • [ 1 ] [Shang, Zhifeng]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Dongtao]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
  • [ 3 ] [Xie, Zhihong]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Yunqiao]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
  • [ 5 ] [Haseeb, Muhammad]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
  • [ 6 ] [Qiao, Pengbiao]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
  • [ 7 ] [Liu, Weiqiang]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
  • [ 8 ] [Yue, Ming]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China

通讯作者信息:

  • 岳明

    [Yue, Ming]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China

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来源 :

JOURNAL OF RARE EARTHS

ISSN: 1002-0721

年份: 2021

期: 2

卷: 39

页码: 160-166

4 . 9 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:96

JCR分区:1

被引次数:

WoS核心集被引频次: 20

SCOPUS被引频次: 24

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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