CN105658835A - 一种低b的稀土磁铁 - Google Patents

一种低b的稀土磁铁 Download PDF

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CN105658835A
CN105658835A CN201480053744.8A CN201480053744A CN105658835A CN 105658835 A CN105658835 A CN 105658835A CN 201480053744 A CN201480053744 A CN 201480053744A CN 105658835 A CN105658835 A CN 105658835A
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rare
earth magnet
phases
magnet
low
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CN105658835B (zh
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永田浩
喻荣
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Fujian Jinlong Rare Earth Co ltd
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Xiamen Tungsten Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
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    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
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    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
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    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes

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Abstract

本发明公开了一种低B的稀土磁铁，所述稀土磁铁含有R2T14B主相，包括如下的原料成分：R：13.5at％～14.5at％、B：5.2at％～5.8at％、Cu：0.3at％～0.8at％、Co：0.3at％～3at％、以及余量为T和不可避免的杂质，所述的R为包括Nd的至少一种稀土元素，所述T为主要包括Fe的元素。该稀土磁铁通过复合添加0.3～0.8at％的Cu和适量的Co，使得晶界中形成3种富Cu相，这种在晶界中存在的3种富Cu相的磁性效果和对晶界中B不足问题的修复，可显著改善磁铁的方形度和耐热性能。

Description

PCT国内申请，说明书已公开。

Claims (10)

  1. PCT国内申请，权利要求书已公开。
CN201480053744.8A 2013-11-27 2014-11-26 一种低b的稀土磁铁 Active CN105658835B (zh)

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CN201310639023.2A CN104674115A (zh) 2013-11-27 2013-11-27 一种低b的稀土磁铁
CN2013106390232 2013-11-27
PCT/CN2014/092225 WO2015078362A1 (zh) 2013-11-27 2014-11-26 一种低b的稀土磁铁

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US (1) US10115507B2 (zh)
EP (1) EP3075874B1 (zh)
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CN112614641A (zh) * 2019-10-04 2021-04-06 大同特殊钢株式会社 烧结磁体和烧结磁体的生产方法

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CN104674115A (zh) * 2013-11-27 2015-06-03 厦门钨业股份有限公司 一种低b的稀土磁铁
CN106531382B (zh) * 2015-09-10 2019-11-05 燕山大学 一种永磁材料及其制备方法
JP6578916B2 (ja) 2015-12-03 2019-09-25 Tdk株式会社 Ｒ−ｔ−ｂ系希土類焼結磁石用合金の製造方法およびｒ−ｔ−ｂ系希土類焼結磁石の製造方法
JP6645219B2 (ja) * 2016-02-01 2020-02-14 Tdk株式会社 Ｒ−ｔ−ｂ系焼結磁石用合金、及びｒ−ｔ−ｂ系焼結磁石
JP2020095989A (ja) * 2017-03-30 2020-06-18 Tdk株式会社 希土類磁石及び回転機
JP6828623B2 (ja) * 2017-07-07 2021-02-10 Tdk株式会社 Ｒ−ｔ−ｂ系希土類焼結磁石及びｒ−ｔ−ｂ系希土類焼結磁石用合金
CN109609731B (zh) * 2018-12-21 2021-04-06 宁国市华丰耐磨材料有限公司 一种高铬磨锻等温淬火热处理工艺方法
JP7293772B2 (ja) * 2019-03-20 2023-06-20 Tdk株式会社 Ｒ－ｔ－ｂ系永久磁石
US20200303100A1 (en) * 2019-03-22 2020-09-24 Tdk Corporation R-t-b based permanent magnet
JP7408921B2 (ja) * 2019-03-27 2024-01-09 Tdk株式会社 Ｒ－ｔ－ｂ系永久磁石
JP2020161692A (ja) * 2019-03-27 2020-10-01 Tdk株式会社 Ｒ−ｔ−ｂ系永久磁石
CN111863369B (zh) * 2019-04-29 2023-04-25 广东省稀有金属研究所 一种磁性粘结剂及其制备方法、复合永磁材料的制备方法
CN110571007B (zh) * 2019-09-03 2021-06-11 厦门钨业股份有限公司 一种稀土永磁材料、原料组合物、制备方法、应用、电机
CN111009369B (zh) * 2019-10-29 2021-08-27 厦门钨业股份有限公司 一种稀土永磁材料及其制备方法和应用
CN110993233B (zh) * 2019-12-09 2021-08-27 厦门钨业股份有限公司 一种r-t-b系永磁材料、原料组合物、制备方法、应用
CN111180159B (zh) * 2019-12-31 2021-12-17 厦门钨业股份有限公司 一种钕铁硼永磁材料、制备方法、应用
CN111243808B (zh) * 2020-02-29 2022-02-01 厦门钨业股份有限公司 一种钕铁硼材料及其制备方法和应用
CN112420372A (zh) * 2020-11-23 2021-02-26 浙江英洛华磁业有限公司 一种稀土永磁体材料的制备方法
CN113066624A (zh) * 2021-02-24 2021-07-02 浙江英洛华磁业有限公司 一种R-T-B-Si-M-A系稀土永磁体
CN117012487A (zh) * 2022-04-29 2023-11-07 福建省长汀金龙稀土有限公司 钕铁硼磁体材料及其制备方法、应用
CN118248426B (zh) * 2024-05-29 2024-08-13 南通正海磁材有限公司 一种具有高磁性能且高电阻率的烧结钕铁硼磁体及其制备方法和应用

Citations (7)

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