JP7548043B2 - 希土類磁石接合体の製造方法及び希土類磁石接合体 - Google Patents
希土類磁石接合体の製造方法及び希土類磁石接合体 Download PDFInfo
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- 150000002910 rare earth metals Chemical class 0.000 title claims description 124
- 238000004519 manufacturing process Methods 0.000 title description 12
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- 229920005989 resin Polymers 0.000 description 28
- 239000011347 resin Substances 0.000 description 28
- 229910001172 neodymium magnet Inorganic materials 0.000 description 16
- 239000010408 film Substances 0.000 description 15
- 239000007788 liquid Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
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- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
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- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/0221—Mounting means for PM, supporting, coating, encapsulating PM
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
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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
-
- 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
- H01F1/0578—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 bonded together
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Hard Magnetic Materials (AREA)
Description
1. 複数の希土類磁石を接合した希土類磁石接合体において、該希土類磁石接合体を構成する少なくとも一対の希土類磁石について、一面同士が互いに接触し接合された接合面の縁部を挟んで隣接する両希土類磁石の隣接面の少なくとも一部に、インクジェット方式により塗布された樹脂組成物の硬化被膜が、上記接合面の縁部を跨いで上記両隣接面に渡り連続して形成されており、かつ該被膜の平均膜厚が30~90μmであり、該被膜により希土類磁石同士が接合されていることを特徴とする希土類磁石接合体。
2. 上記被膜の硬度が、JIS K 5600に規定の鉛筆硬度で6H以上である1の希土類磁石接合体。
本発明の希土類磁石接合体の製造方法では、上述のように、互いに接合する希土類焼結磁石同士を両磁石に渡る被膜を形成して接合することにより、複数の希土類磁石が接合してなる希土類磁石接合体を製造するものである。
インクジェット方式により被膜を形成する方法には、(A)ヘッドから液滴を射出するインクジェット方式により、ヘッドの先端から紫外線硬化樹脂組成物の液滴を射出して希土類磁石表面に付着させる工程、および、(B)希土類磁石表面に付着した紫外線硬化樹脂組成物に紫外線を照射して、紫外線硬化樹脂を硬化させる工程が含まれる。
直方体形状(14.23mm×7.06mm×5.16mm)のNd-Fe-B焼結磁石を用意し、2つ一組として治具で固定した後、UV-LED硬化フラットヘッドインクジェットプリンタUFJ-6042MkII((株)ミマキエンジニアリング製)を使用して、図1(B)に示した例と同様に、両磁石(1a,1b)の接触面(接合面)(3ab)の縁部を挟んで隣接する両隣接面(4a,4b)に、上記接触面(接合面)(3ab)の縁部を跨いで上記両隣接面(4a,4b)に渡って連続する被膜(2)を形成した。被膜を形成する紫外線硬化樹脂組成物は、アクリル酸エステルを主成分とし、反応希釈材として二アクリル酸ヘキサメチレン、重合開始剤、および着色料としてカーボンブラックを含むものを用いた。上記インクジェットプリンタで吐出させる紫外線硬化樹脂組成物の液滴の液量は10pLとし、解像度は1200dpi×1200dpiとした。被膜形成作業は、次の通りに行った。
紫外線硬化樹脂組成物の液滴の液量を6pLとし、解像度を600dpi×600dpiとした以外は実施例1と同様にして、希土類磁石接合体を3個得た。
紫外線硬化樹脂組成物の液滴の液量を8pLとした以外は実施例1と同様にして、希土類磁石接合体を3個得た。
11 希土類磁石接合体
2 被膜
3a,3b 希土類磁石の一面
3ab 接触面(接合面)
4a,4b 隣接面
Claims (2)
- 複数の希土類磁石を接合した希土類磁石接合体において、該希土類磁石接合体を構成する少なくとも一対の希土類磁石について、一面同士が互いに接触し接合された接合面の縁部を挟んで隣接する両希土類磁石の隣接面の少なくとも一部に、インクジェット方式により塗布された樹脂組成物の硬化被膜が、上記接合面の縁部を跨いで上記両隣接面に渡り連続して形成されており、かつ該被膜の平均膜厚が30~90μmであり、該被膜により希土類磁石同士が接合されていることを特徴とする希土類磁石接合体。
- 上記被膜の硬度が、JIS K 5600に規定の鉛筆硬度で6H以上である請求項1に記載の希土類磁石接合体。
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JP2021018902A JP7548043B2 (ja) | 2021-02-09 | 2021-02-09 | 希土類磁石接合体の製造方法及び希土類磁石接合体 |
US17/581,238 US20220254552A1 (en) | 2021-02-09 | 2022-01-21 | Rare earth magnet assembly and preparation method |
CN202210117187.8A CN114914045A (zh) | 2021-02-09 | 2022-02-08 | 稀土磁体组件和制备方法 |
JP2024105271A JP2024124467A (ja) | 2021-02-09 | 2024-06-28 | 希土類磁石接合体の製造方法及び希土類磁石接合体 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003134750A (ja) | 2001-10-24 | 2003-05-09 | Railway Technical Res Inst | 永久磁石の製造方法、永久磁石片、及び永久磁石 |
JP2006073557A (ja) | 2004-08-31 | 2006-03-16 | Nippon Steel Corp | 高性能表面被膜を有する永久磁石とその製造方法 |
JP2010029035A (ja) | 2008-07-23 | 2010-02-04 | Daido Electronics Co Ltd | モータ用電着塗装部品 |
WO2010038748A1 (ja) | 2008-10-02 | 2010-04-08 | 日産自動車株式会社 | 界磁極用磁石体、この界磁用磁石体の作製方法、及び永久磁石型回転電機 |
WO2012111065A1 (ja) | 2011-02-14 | 2012-08-23 | トヨタ自動車株式会社 | ロータ磁石、ロータ及びロータ製造方法 |
WO2019004368A1 (ja) | 2017-06-29 | 2019-01-03 | 信越化学工業株式会社 | 希土類磁石表面への被膜の形成方法及び希土類磁石 |
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JPH0533740U (ja) * | 1991-09-19 | 1993-05-07 | 住友精化株式会社 | 磁気治療器 |
JP3564993B2 (ja) * | 1998-02-09 | 2004-09-15 | 富士ゼロックス株式会社 | 現像剤層規制部材、一成分画像形成装置および画像形成方法 |
US20080050581A1 (en) * | 2004-03-31 | 2008-02-28 | Tdk Corporation | Rare Earth Magnet and Method for Manufacturing Same |
JP5364147B2 (ja) * | 2011-01-17 | 2013-12-11 | シナノケンシ株式会社 | 磁石及び磁石の製造方法 |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003134750A (ja) | 2001-10-24 | 2003-05-09 | Railway Technical Res Inst | 永久磁石の製造方法、永久磁石片、及び永久磁石 |
JP2006073557A (ja) | 2004-08-31 | 2006-03-16 | Nippon Steel Corp | 高性能表面被膜を有する永久磁石とその製造方法 |
JP2010029035A (ja) | 2008-07-23 | 2010-02-04 | Daido Electronics Co Ltd | モータ用電着塗装部品 |
WO2010038748A1 (ja) | 2008-10-02 | 2010-04-08 | 日産自動車株式会社 | 界磁極用磁石体、この界磁用磁石体の作製方法、及び永久磁石型回転電機 |
WO2012111065A1 (ja) | 2011-02-14 | 2012-08-23 | トヨタ自動車株式会社 | ロータ磁石、ロータ及びロータ製造方法 |
WO2019004368A1 (ja) | 2017-06-29 | 2019-01-03 | 信越化学工業株式会社 | 希土類磁石表面への被膜の形成方法及び希土類磁石 |
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US20220254552A1 (en) | 2022-08-11 |
JP2022121915A (ja) | 2022-08-22 |
CN114914045A (zh) | 2022-08-16 |
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