JP4552090B2 - 希土類ボンド磁石、及びその製造方法 - Google Patents
希土類ボンド磁石、及びその製造方法 Download PDFInfo
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- JP4552090B2 JP4552090B2 JP2007266554A JP2007266554A JP4552090B2 JP 4552090 B2 JP4552090 B2 JP 4552090B2 JP 2007266554 A JP2007266554 A JP 2007266554A JP 2007266554 A JP2007266554 A JP 2007266554A JP 4552090 B2 JP4552090 B2 JP 4552090B2
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Classifications
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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
- H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
-
- 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
- H01F1/0572—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 with a protective layer
-
- 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
- H01F41/0266—Moulding; Pressing
-
- 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
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together bonded together
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
- Y10T29/49076—From comminuted material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Description
R(m-n)−M−X(n) …(1)
(式中、Rは炭化水素基を有する1種又は2種以上の有機基、Xは加水分解性基、MはSi、Al、TiまたはZrから選ばれるいずれかの金属元素である。Rが2種以上の有機基を含む場合、有機基は同一でも異なっていても良い。mはMの結合手の数であって2から4の整数、またnは1から4の整数を示す。)。ここで、炭化水素基とは、炭素数1〜15のアルキル基、アリル基、アリール基であり、これらは直鎖状、分岐状、環状のいずれであってもよい。一方、加水分解性基とは、炭素数1から5のアルコキシ基、グリコール基などである。
有機溶剤に、樹脂バインダである熱硬化性樹脂と、硬化剤と、有機リン系化合物とを溶解させ、前記有機リン系化合物を均一に分散させた溶液を作製する工程(以下「工程A」とする。)と、
前記溶液を、粉粒の粒径範囲が30μmから500μmの希土類磁石粉末に混合し、混合物を作製する工程(以下「工程B」とする。)と、
前記有機溶剤を揮発し、前記混合物を乾燥させる工程(以下「工程C」とする。)と、
前記乾燥させた混合物を解砕し、解砕された混合物に潤滑剤を添加して混練し、コンパウンドを作製する工程(以下「工程D」とする。)と、
前記コンパウンドを、所定の圧力にて圧縮成形して成形物を作製する工程(以下「工程E」とする。)と、及び、
前記成形物を、所定温度に加熱、硬化し、希土類ボンド磁石を得る工程と(以下「工程F」とする。)を含み、
前記希土類ボンド磁石のうちの該樹脂バインダ中に該有機リン系化合物が均一に分散されていることを特徴とする。
以下、当該製造法を、工程Aから工程Fを、各工程に分けて説明することとする。
実施例1、2のそれぞれの耐熱性を確認するため、得られた円柱形状の希土類ボンド磁石を着磁した後、高温環境(180℃、120時間)に放置し加熱試験を行い、試験の前後における総フラックスの減少率(%)を測定した(測定結果は、表2及び3の下から二つ目の欄参照)。
Claims (9)
-
粉粒の粒径範囲が30μmから500μmの希土類磁石粉末と、熱硬化性樹脂からなる樹脂バインダと、前記希土類磁石粉末の重量に対して0.05から2重量%である亜リン酸エステル類の有機リン系化合物と、を含むコンパウンドを作製し、該コンパウンドを圧縮成形して加熱、硬化してなる希土類ボンド磁石であって、前記樹脂バインダ中に前記亜リン酸エステル類の前記有機リン系化合物が均一に分散されていることを特徴とする希土類ボンド磁石。 - 前記熱硬化性樹脂の量は、前記希土類磁石粉末の重量に対して、0.5から5重量%であることを特徴とする請求項1に記載の希土類ボンド磁石。
- 前記熱硬化性樹脂と、前記亜リン酸エステル類の有機リン系化合物と、カップリング剤と、の合計重量が0.56から10重量%となるように、さらにカップリング剤を含むことを特徴とする請求項1又は2に記載の希土類ボンド磁石。
- 前記希土類ボンド磁石が、車載用モータに用いられることを特徴とする請求項1から3のいずれか1項に記載の希土類ボンド磁石。
- 有機溶剤に、樹脂バインダである熱硬化性樹脂と、硬化剤と、亜リン酸エステル類の有機リン系化合物と、を溶解させ、該亜リン酸エステル類の有機リン系化合物を均一に分散させた溶液を作製する工程と、
前記溶液を、粉粒の粒径範囲が30μmから500μmの希土類磁石粉末に混合し、混合物を作製する工程と、
前記有機溶剤を揮発し、前記混合物を乾燥させる工程と、
前記乾燥させた混合物を解砕し、解砕された混合物に潤滑剤を添加して混練し、コンパウンドを作製する工程と、
前記コンパウンドを、所定の圧力にて圧縮成形して成形物を作製する工程と、及び、
前記成形物を、所定温度に加熱、硬化し、希土類ボンド磁石を得る工程と、
を含むことを特徴とする希土類ボンド磁石の製造方法。 - 前記熱硬化性樹脂の量が、前記希土類磁石粉末の重量に対して、0.5から5重量%であることを特徴とする請求項5に記載の希土類ボンド磁石の製造方法。
- 前記有機溶剤の量が、前記希土類磁石粉末の重量に対して、50から200重量%であることを特徴とする請求項6に記載の希土類ボンド磁石の製造方法。
- 前記亜リン酸エステル類の有機リン系化合物の量が、前記希土類磁石粉末の重量に対して0.05から2重量%であることを特徴とする請求項6又は7に記載の希土類ボンド磁石の製造方法。
- 前記圧縮成形における所定の圧力が、0.1GPaから1.5GPaであることを特徴とする請求項6から8のいずれか1項に記載の希土類ボンド磁石の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007266554A JP4552090B2 (ja) | 2007-10-12 | 2007-10-12 | 希土類ボンド磁石、及びその製造方法 |
US12/078,038 US20090096561A1 (en) | 2007-10-12 | 2008-03-26 | Rare earth bonded magnet and production method thereof |
EP08005733A EP2048674A1 (en) | 2007-10-12 | 2008-03-27 | Rare earth bonded magnet and production method thereof |
Applications Claiming Priority (1)
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JP2007266554A JP4552090B2 (ja) | 2007-10-12 | 2007-10-12 | 希土類ボンド磁石、及びその製造方法 |
Publications (2)
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JP2009099580A JP2009099580A (ja) | 2009-05-07 |
JP4552090B2 true JP4552090B2 (ja) | 2010-09-29 |
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Family Applications (1)
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JP2007266554A Expired - Fee Related JP4552090B2 (ja) | 2007-10-12 | 2007-10-12 | 希土類ボンド磁石、及びその製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20090096561A1 (ja) |
EP (1) | EP2048674A1 (ja) |
JP (1) | JP4552090B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5499738B2 (ja) * | 2009-02-03 | 2014-05-21 | 戸田工業株式会社 | 表面処理された希土類系磁性粉末、該希土類系磁性粉末を含有するボンド磁石用樹脂組成物並びにボンド磁石 |
JP5257614B2 (ja) * | 2009-03-27 | 2013-08-07 | ミネベア株式会社 | 希土類ボンド磁石 |
GB0912349D0 (en) * | 2009-07-16 | 2009-08-26 | Magnequench Internat Inc | Process for manufacture of a bonded magnet |
EP2550666A2 (en) * | 2010-03-23 | 2013-01-30 | Basf Se | Composition for producing magnetic or magnetizable moldings, and process for producing the same |
US9380733B2 (en) * | 2013-02-20 | 2016-06-28 | Mitsubishi Electric Corporation | Cooling device and power module equipped with cooling device |
CN110070985B (zh) * | 2018-01-22 | 2022-11-22 | 日亚化学工业株式会社 | 粘结磁体和粘结磁体用混合物的制造方法 |
CN111029073A (zh) * | 2019-12-27 | 2020-04-17 | 成都银河磁体股份有限公司 | 一种高电阻磁粉、粘结磁体及其制备方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS63281409A (ja) * | 1987-05-13 | 1988-11-17 | Nippon Steel Chem Co Ltd | Fe−Nd−B系磁性粉末の表面処理方法 |
JPH01114006A (ja) * | 1987-10-28 | 1989-05-02 | Sankyo Seiki Mfg Co Ltd | 樹脂結合型磁石の製造方法 |
JPH01147806A (ja) * | 1987-12-04 | 1989-06-09 | Sankyo Seiki Mfg Co Ltd | 樹脂結合型磁石の製造方法 |
JPH05308015A (ja) * | 1992-05-01 | 1993-11-19 | Asahi Chem Ind Co Ltd | 磁性材樹脂複合材料 |
JPH06163225A (ja) * | 1992-11-20 | 1994-06-10 | Sumitomo Metal Mining Co Ltd | ボンド磁石用組成物及びボンド磁石 |
JP2001176711A (ja) * | 1999-12-16 | 2001-06-29 | Ishizuka Glass Co Ltd | ボンド磁石の製造方法、ボンド磁石粉末の製造方法、ボンド磁石及びボンド磁石粉末 |
JP2002190421A (ja) * | 2000-10-13 | 2002-07-05 | Bridgestone Corp | 樹脂磁石成形物及びその製造方法 |
JP2004047872A (ja) * | 2002-07-15 | 2004-02-12 | Matsushita Electric Ind Co Ltd | シ−トからフィルムに至る希土類ボンド磁石の製造方法とその永久磁石型モ−タ |
Family Cites Families (5)
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US4668283A (en) * | 1984-06-25 | 1987-05-26 | Mitsui Toatsu Chemicals, Incorporated | Magnetic powder and production process thereof |
US5173206A (en) * | 1987-12-14 | 1992-12-22 | The B. F. Goodrich Company | Passivated rare earth magnet or magnetic material compositions |
JPH06349617A (ja) | 1993-06-04 | 1994-12-22 | Sumitomo Metal Mining Co Ltd | ボンド磁石用組成物及びボンド磁石 |
JP2001244106A (ja) | 2000-03-01 | 2001-09-07 | Dainippon Ink & Chem Inc | 希土類系磁性粉及びその表面処理方法 |
JP2002008911A (ja) * | 2000-06-22 | 2002-01-11 | Nichia Chem Ind Ltd | 希土類−鉄−窒素系磁粉の表面処理方法及びそれを用いたプラスチック磁石 |
-
2007
- 2007-10-12 JP JP2007266554A patent/JP4552090B2/ja not_active Expired - Fee Related
-
2008
- 2008-03-26 US US12/078,038 patent/US20090096561A1/en not_active Abandoned
- 2008-03-27 EP EP08005733A patent/EP2048674A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63281409A (ja) * | 1987-05-13 | 1988-11-17 | Nippon Steel Chem Co Ltd | Fe−Nd−B系磁性粉末の表面処理方法 |
JPH01114006A (ja) * | 1987-10-28 | 1989-05-02 | Sankyo Seiki Mfg Co Ltd | 樹脂結合型磁石の製造方法 |
JPH01147806A (ja) * | 1987-12-04 | 1989-06-09 | Sankyo Seiki Mfg Co Ltd | 樹脂結合型磁石の製造方法 |
JPH05308015A (ja) * | 1992-05-01 | 1993-11-19 | Asahi Chem Ind Co Ltd | 磁性材樹脂複合材料 |
JPH06163225A (ja) * | 1992-11-20 | 1994-06-10 | Sumitomo Metal Mining Co Ltd | ボンド磁石用組成物及びボンド磁石 |
JP2001176711A (ja) * | 1999-12-16 | 2001-06-29 | Ishizuka Glass Co Ltd | ボンド磁石の製造方法、ボンド磁石粉末の製造方法、ボンド磁石及びボンド磁石粉末 |
JP2002190421A (ja) * | 2000-10-13 | 2002-07-05 | Bridgestone Corp | 樹脂磁石成形物及びその製造方法 |
JP2004047872A (ja) * | 2002-07-15 | 2004-02-12 | Matsushita Electric Ind Co Ltd | シ−トからフィルムに至る希土類ボンド磁石の製造方法とその永久磁石型モ−タ |
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Publication number | Publication date |
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EP2048674A1 (en) | 2009-04-15 |
US20090096561A1 (en) | 2009-04-16 |
JP2009099580A (ja) | 2009-05-07 |
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