Origin of the coercivity difference in sintered Nd-Fe-B magnets by grain boundary diffusion process using TbH3 nanoparticles and TbF3 microparticles - 文章详情页

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摘要：

Nd-Fe-B　sintered　magnets　with　different　thicknesses　of　up　to　10　mm　were　fabricated　by　combining　TbH3　nanoparticles　as　diffusion　sources　and　the　grain　boundary　diffusion　(GBD)　technique.　TbF3　microparticle-diffused　magnets　were　also　prepared　for　comparison.　TbH3　nanoparticles　diffusion　increased　the　coercivity　by　6.9　kOe　for　the　magnets　with　thicknesses　of　10　mm,　which　is　5.21　kOe　larger　than　that　of　TbF3　microparticle-diffused　magnets.　Deeper,　thicker　and　consecutive　(Nd,Tb)(2)Fe14B　layers　are　observed　in　TbH3　nanoparticle-diffused　magnets　compared　to　TbF3　microparticles,　indicating　the　superiority　of　TbH3　nanoparticles　in　the　GBD　process,　which　can　effectively　inhibit　the　nucleation　of　reversed　domains　and　thus　enhance　the　coercivity.

关键词：

Grain boundary diffusion Magnetic domain Nd-Fe-B sintered magnets TbF3 microparticle TbH3 nanoparticles Thickness

作者机构：

[ 1 ] [Zhou, Zhao]Beijing Univ Technol, Coll Mat Sci & Engn, Minist Educ China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
[ 2 ] [Liu, Weiqiang]Beijing Univ Technol, Coll Mat Sci & Engn, Minist Educ China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
[ 3 ] [Wu, Dan]Beijing Univ Technol, Coll Mat Sci & Engn, Minist Educ China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
[ 4 ] [Yue, Ming]Beijing Univ Technol, Coll Mat Sci & Engn, Minist Educ China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
[ 5 ] [Lu, Qingmei]Beijing Univ Technol, Coll Mat Sci & Engn, Minist Educ China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
[ 6 ] [Zhang, Dongtao]Beijing Univ Technol, Coll Mat Sci & Engn, Minist Educ China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
[ 7 ] [Zhang, Hongguo]Beijing Univ Technol, Coll Mat Sci & Engn, Minist Educ China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
[ 8 ] [Zhou, Zhao]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
[ 9 ] [Zhao, Jinliang]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
[ 10 ] [Liu, Youhao]State Key Lab Rare Earth Permanent Magnet Mat, Hefei 231500, Anhui, Peoples R China
[ 11 ] [Zha, Shanshun]State Key Lab Rare Earth Permanent Magnet Mat, Hefei 231500, Anhui, Peoples R China
[ 12 ] [Yi, Xiaofei]State Key Lab Rare Earth Permanent Magnet Mat, Hefei 231500, Anhui, Peoples R China
[ 13 ] [Wang, Gongping]Jiangxi Normal Univ, Sch Phys Elect & Commun, Jiangxi Key Lab Nanomat & Sensors, Nanchang 330022, Jiangxi, Peoples R China

通讯作者信息：

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

电子邮件地址：

yueming@bjut.edu.cn

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