JP6919788B2 - 希土類焼結磁石 - Google Patents
希土類焼結磁石 Download PDFInfo
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- JP6919788B2 JP6919788B2 JP2018554245A JP2018554245A JP6919788B2 JP 6919788 B2 JP6919788 B2 JP 6919788B2 JP 2018554245 A JP2018554245 A JP 2018554245A JP 2018554245 A JP2018554245 A JP 2018554245A JP 6919788 B2 JP6919788 B2 JP 6919788B2
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- rare earth
- earth sintered
- sintered magnet
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims description 124
- 150000002910 rare earth metals Chemical class 0.000 title claims description 116
- 239000002245 particle Substances 0.000 claims description 156
- 239000013078 crystal Substances 0.000 claims description 93
- 239000000203 mixture Substances 0.000 claims description 32
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 229910052779 Neodymium Inorganic materials 0.000 claims description 10
- 238000010298 pulverizing process Methods 0.000 description 43
- 239000000843 powder Substances 0.000 description 41
- 239000002994 raw material Substances 0.000 description 41
- 238000000034 method Methods 0.000 description 34
- 238000005245 sintering Methods 0.000 description 32
- 229910045601 alloy Inorganic materials 0.000 description 27
- 239000000956 alloy Substances 0.000 description 27
- 238000009826 distribution Methods 0.000 description 20
- 230000004907 flux Effects 0.000 description 14
- 230000007423 decrease Effects 0.000 description 13
- 238000000465 moulding Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000002441 X-ray diffraction Methods 0.000 description 10
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 9
- 239000011324 bead Substances 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 8
- 229910000765 intermetallic Inorganic materials 0.000 description 8
- 239000011362 coarse particle Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 230000005415 magnetization Effects 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910052772 Samarium Inorganic materials 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000002490 spark plasma sintering Methods 0.000 description 4
- 229910052723 transition metal Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 239000011882 ultra-fine particle Substances 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011802 pulverized particle Substances 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
-
- 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
-
- 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
-
- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- 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
- H01F1/0536—Alloys characterised by their composition containing rare earth metals 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
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
Description
<希土類焼結磁石の製造方法>
まず、希土類焼結磁石の原料合金を準備し、表1に示す組成を有する希土類焼結磁石が得られるように、ストリップキャスティング法により原料合金を準備し、調製し、鋳造した。
表1に示す組成の希土類焼結磁石が得られるように原料を配合し、実験例1と同様にして、原料合金の準備、鋳造および水素粉砕処理を行った。
希土類焼結磁石の原料合金を準備し、表3に示す各組成の希土類焼結磁石が得られるように原料を配合し、原料合金の鋳造、粉砕、成形、焼結を実験例1と同様に行い、表4に示す実験例16〜18の各希土類焼結磁石を得た。また、表3に示す各組成ごとに原料合金の鋳造、粉砕、成形、焼結を実験例4と同様に行い、実験例19〜21の各希土類焼結磁石を得た。
表5に示す各組成の希土類焼結磁石が得られるように原料を配合し、実験例4と同様にして、原料合金の鋳造、粉砕、成形、焼結を行い、表6に示す実験例22〜25の各希土類焼結磁石を得た。
希土類焼結磁石の原料合金を準備し、表7に示す各組成の希土類焼結磁石が得られるように原料を配合し、原料合金の鋳造、粉砕、成形、焼結を実験例1と同様に行い、表8に示す実験例α〜実験例ιの各希土類焼結磁石を得た。また、表7に示す各組成の原料合金の鋳造、粉砕、成形、焼結を実験例4と同様に行い、表8に示す実験例κ〜実験例σの各希土類焼結磁石を得た。
希土類焼結磁石の原料合金を準備し、表9に示す各組成の希土類焼結磁石が得られるように原料を配合し、原料合金の鋳造、粉砕、成形、焼結を実験例1と同様に行い、表10に示す実験例τ〜実験例υを得た。また、表9に示す各組成の原料合金の鋳造、粉砕、成形、焼結を実験例4と同様に行い、表10に示す実験例φ〜実験例χを得た。
Claims (3)
- Nd5Fe17型結晶構造を有する主相結晶粒子を含み、RおよびTからなる希土類焼結磁石(RはSmを必須とする1種以上の希土類元素、TはFeまたはFeおよびCoを必須とする1種以上の遷移金属元素)であって、前記希土類焼結磁石のRの組成比率が20at%以上40at%以下であり、前記希土類焼結磁石における前記R以外の残部が実質的に前記Tのみ、または、前記TおよびCのみであり、かつ前記希土類焼結磁石の一の切断面における前記主相結晶粒子の平均粒径をDv、個々の主相結晶粒子の粒径をDiとしたときに、前記Dvが1.0μm以上であり、前記希土類焼結磁石の切断面の面積に対する0.7Dv≦Di≦2.0Dvを満たす主相結晶粒子の面積率が80%以上であることを特徴とする希土類焼結磁石。
- さらにCを含有し、
Cの含有量が0at%より多く、15.0at%以下である請求項1に記載の希土類焼結磁石。 - R全体に占めるSmの割合が50at%以上99at%以下であり、R全体に占めるPrとNdとの合計の割合が1at%以上50at%以下である請求項1または2に記載の希土類焼結磁石。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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JP2016232112 | 2016-11-30 | ||
JP2016232112 | 2016-11-30 | ||
JP2017054942 | 2017-03-21 | ||
JP2017054942 | 2017-03-21 | ||
PCT/JP2017/043075 WO2018101409A1 (ja) | 2016-11-30 | 2017-11-30 | 希土類焼結磁石 |
Publications (2)
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JPWO2018101409A1 JPWO2018101409A1 (ja) | 2019-11-07 |
JP6919788B2 true JP6919788B2 (ja) | 2021-08-18 |
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JP2018554245A Active JP6919788B2 (ja) | 2016-11-30 | 2017-11-30 | 希土類焼結磁石 |
Country Status (4)
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---|---|
US (1) | US11081265B2 (ja) |
JP (1) | JP6919788B2 (ja) |
CN (1) | CN110024056B (ja) |
WO (1) | WO2018101409A1 (ja) |
Families Citing this family (2)
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JPWO2018101410A1 (ja) * | 2016-11-30 | 2019-11-07 | Tdk株式会社 | 希土類永久磁石 |
WO2018101408A1 (ja) * | 2016-11-30 | 2018-06-07 | Tdk株式会社 | 永久磁石および永久磁石粉末 |
Family Cites Families (14)
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KR100771676B1 (ko) * | 2000-10-04 | 2007-10-31 | 가부시키가이샤 네오맥스 | 희토류 소결자석 및 그 제조방법 |
JP2002270416A (ja) * | 2001-03-14 | 2002-09-20 | Shin Etsu Chem Co Ltd | バルク状異方性希土類永久磁石及びその製造方法 |
JP4623308B2 (ja) * | 2006-03-31 | 2011-02-02 | 戸田工業株式会社 | ボンド磁石用Sm−Fe−N系磁性粒子粉末及びその製造法、ボンド磁石用樹脂組成物並びにボンド磁石 |
JP4863377B2 (ja) | 2006-11-27 | 2012-01-25 | 学校法人千葉工業大学 | サマリウム−鉄系永久磁石材料 |
CN101265529A (zh) * | 2008-05-09 | 2008-09-17 | 北京工业大学 | 块状纳米晶SmCo系永磁材料的制备方法 |
CN102400191B (zh) * | 2011-11-22 | 2014-04-09 | 沈阳理工大学 | 强磁场下制备Sm-Fe合金磁性薄膜的方法 |
JP6257890B2 (ja) * | 2012-11-20 | 2018-01-10 | 株式会社東芝 | 永久磁石とそれを用いたモータおよび発電機 |
DE112014003674T5 (de) * | 2013-08-09 | 2016-05-12 | Tdk Corporation | R-T-B basierter gesinterter Magnet und Motor |
CN105679479B (zh) * | 2014-11-20 | 2017-08-25 | 有研稀土新材料股份有限公司 | 永磁材料及永磁材料的制备方法 |
JP2016134498A (ja) * | 2015-01-19 | 2016-07-25 | 住友電気工業株式会社 | 磁性材料の製造方法 |
JP6429021B2 (ja) * | 2015-03-20 | 2018-11-28 | Tdk株式会社 | 永久磁石 |
WO2018101408A1 (ja) * | 2016-11-30 | 2018-06-07 | Tdk株式会社 | 永久磁石および永久磁石粉末 |
JPWO2018101410A1 (ja) * | 2016-11-30 | 2019-11-07 | Tdk株式会社 | 希土類永久磁石 |
JP7124356B2 (ja) * | 2018-03-09 | 2022-08-24 | Tdk株式会社 | 希土類永久磁石 |
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2017
- 2017-11-30 CN CN201780074112.3A patent/CN110024056B/zh active Active
- 2017-11-30 JP JP2018554245A patent/JP6919788B2/ja active Active
- 2017-11-30 US US16/465,402 patent/US11081265B2/en active Active
- 2017-11-30 WO PCT/JP2017/043075 patent/WO2018101409A1/ja active Application Filing
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Publication number | Publication date |
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US20200005973A1 (en) | 2020-01-02 |
CN110024056A (zh) | 2019-07-16 |
JPWO2018101409A1 (ja) | 2019-11-07 |
CN110024056B (zh) | 2020-12-15 |
WO2018101409A1 (ja) | 2018-06-07 |
US11081265B2 (en) | 2021-08-03 |
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