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作者:

Xi, Wang (Xi, Wang.) | Zhang, Hongguo (Zhang, Hongguo.) | Li, Meijun (Li, Meijun.) | Liu, Weiqiang (Liu, Weiqiang.) | Yue, Ming (Yue, Ming.) (学者:岳明)

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摘要:

A rotation coating technique was used to apply Zn layer onto MQP-S Nd-Fe-B spherical powders, aiming to enhance their anti -oxidation properties while maintaining their high magnetic performance. As the coating temperature increases and duration extends, the Zn layer thickness grows, subsequently leading to a reduction in powder magnetization primarily due to the introduction of nonmagnetic Zn. A certain level of degradation of the original Nd-Fe-B powders also occurs during coating, which appears to be relatively minor, as the powders ' coercivity remains almost unchanged after coating. All powders coated under different conditions effectively prevent further oxidation, maintaining almost unaltered magnetization during high -temperature tests. It demonstrates that rotation coating using lower melting point metals is a simple yet effective method to enhance the anti -oxidation capability of Nd-Fe-B powders. Moreover, this approach is easily scalable, which is important for applications in fabricating metal injection molding or bonded magnets.

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作者机构:

  • [ 1 ] [Xi, Wang]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Hongguo]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Meijun]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Liu, Weiqiang]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 5 ] [Yue, Ming]Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 6 ] [Xi, Wang]Beijing Technol & Business Univ, Coll Light Ind Sci & Engn, Beijing 100048, Peoples R China

通讯作者信息:

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

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来源 :

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

ISSN: 0304-8853

年份: 2024

卷: 597

2 . 7 0 0

JCR@2022

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