The evaluation of high-temperature oxidation for the original and recycled Nd-Fe-B sintered magnets - 文章详情页

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The　high-temperature　oxidation　resistance　is　a　critical　evaluation　index　for　the　practical　applications　of　Nd-Fe-B　sintered　magnets.　In　this　paper,　the　high　temperature　(＞　523　K)　oxidation　behavior　of　the　recycled　Nd-Fe-B　sintered　magnets　was　investigated　and　compared　with　the　original　magnets.　The　results　show　that　both　magnets　exhibit　similar　high-temperature　oxidation　characteristics.　The　recycled　magnets　oxidized　after　300　h　at　673　K　possesses　remanence　(B-r)　of　1.189　T,　coercivity　(H-ci)　of　1688　kA/m,　and　maximum　energy　product　[(BH)(max)]　of　268　kJ/m(3).　Compared　with　the　recycled　magnet　before　oxidizing,　the　oxidized　recycled　magnets　retain　96.0%　of　B-r,　85.2%　of　H-ci,　and　92.2%　of　(BH)(max),　respectively.　The　recycled　magnets　negatively　influence　the　high-temperature　oxidation　resistance　compared　with　the　original　magnets,　demonstrating　the　recycled　magnets＇　applicability.　(C)　2021　Published　by　Elsevier　B.V.

关键词：

High-temperature oxidation Oxidation mechanism Oxidation rate Recycled Nd-Fe-B sintered magnets

作者机构：

[ 1 ] [Li, X. T.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
[ 2 ] [Liu, W. Q.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
[ 3 ] [Yue, M.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
[ 4 ] [Zhang, D. T.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
[ 5 ] [Lu, Q. M.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
[ 6 ] [Zhang, H. G.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China
[ 7 ] [Liu, Y. H.]State Key Lab Rare Earth Permanent Magnet Mat, Hefei 231500, Peoples R China
[ 8 ] [Zha, S. S.]State Key Lab Rare Earth Permanent Magnet Mat, Hefei 231500, Peoples R China
[ 9 ] [Yi, X. F.]State Key Lab Rare Earth Permanent Magnet Mat, Hefei 231500, Peoples R China
[ 10 ] [Liu, Y. H.]Earth Panda Adv Magnet Mat Co Ltd, Hefei 231500, Peoples R China
[ 11 ] [Zha, S. S.]Earth Panda Adv Magnet Mat Co Ltd, Hefei 231500, Peoples R China
[ 12 ] [Yi, X. F.]Earth Panda Adv Magnet Mat Co Ltd, Hefei 231500, Peoples R China

通讯作者信息：

刘卫强岳明
[Liu, W. Q.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China;;[Yue, M.]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China

电子邮件地址：

liuwq@bjut.edu.cn |
yueming@bjut.edu.cn

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