JP7234082B2 - 磁石材料、永久磁石、回転電機、及び車両 - Google Patents
磁石材料、永久磁石、回転電機、及び車両 Download PDFInfo
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- JP7234082B2 JP7234082B2 JP2019168882A JP2019168882A JP7234082B2 JP 7234082 B2 JP7234082 B2 JP 7234082B2 JP 2019168882 A JP2019168882 A JP 2019168882A JP 2019168882 A JP2019168882 A JP 2019168882A JP 7234082 B2 JP7234082 B2 JP 7234082B2
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
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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
- H01F1/0555—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
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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
- H01F1/059—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2
- H01F1/0596—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2 of rhombic or rhombohedral Th2Zn17 structure or hexagonal Th2Ni17 structure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/10—Electrical machine types
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
-
- 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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
実施形態の磁石材料は、R元素(Rは1種類以上の希土類元素)と、M元素(Fe及びCoからなる群より選ばれる少なくとも一つの元素)と、を含む。上記磁石材料は、主相を有する金属組織を具備する。主相は、磁石材料中の各結晶相及び非晶質相のうち、最も体積占有率が高い相である。
A元素の添加量cは0≦c≦18原子%を満足する数であり、好ましくは0≦d≦10原子%を満足する数である。A元素の添加量が18原子%を超えると飽和磁化の低下を招く。
RM5-1/3(R-2M)=R2/3M(5+2/3)=R2M17
第1の実施形態の磁石材料を用いた永久磁石は、各種モータや発電機に使用することができる。また、可変磁束モータや可変磁束発電機の固定磁石や可変磁石として使用することも可能である。上記永久磁石を用いることによって、各種のモータや発電機が構成される。上記永久磁石を可変磁束モータに適用する場合、可変磁束モータの構成やドライブシステムには、例えば特開2008-29148号公報や特開2008-43172号公報に開示されている技術を適用することができる。
以下の表1に示す実施例1~18の組成を得るために原料を秤量し、アーク溶解法によりインゴット合金を作製した。次にインゴット合金を用いて、単ロール型液体急冷凝固装置を用いたストリップキャスト法により急冷薄帯を作製した。ロール周速は2m/sとした。この急冷薄帯に対し、Ar雰囲気において1100℃の温度で4時間熱処理を実施した。熱処理後の薄帯を乳鉢で粉砕し、CuKαを線源とするX線によるX線回折(XRD)測定により結晶構造解析を行ったところ、全ての試料で主相がTh2Ni17相であることが確認された。また、全ての試料において、α-(Fe,Co)相の析出量はSEM像の面積比から、10体積%未満であることが確認された。
次に、表1に示す比較例1、2の組成を得るために原料を秤量し、アーク溶解法により合金を作製した。組成が異なる以外は実施例1~18と同様の手順で試料を作製した。実施例1~18及び比較例1、2の測定結果を表1に示す。
Claims (11)
- 組成式:(R1-xYx)aMbAc
(式中、Rは1種類以上の希土類元素であり、MはFe及びCoからなる群より選ばれる少なくとも一つの元素であり、AはN、C、B、H及びPからなる群より選ばれる少なくとも一つの元素であり、xは0.01≦x≦0.8を満足する数であり、aは4≦a≦20原子%を満足する数であり、bはb=100-a―c原子%を満足する数であり、cは0≦c≦18原子%を満足する数である)により表される磁石材料であって、
Th2Ni17型結晶構造を有する主相を具備し、
前記主相中のM元素の濃度は、89.6原子%以上であり、
M元素のうち、前記磁石材料の組成の0.89原子%以下がTiに置換されている、磁石材料。 - M元素の一部は、さらに、V、Cr、Nb、Ta、Mo、及びWからなる群より選ばれる少なくとも一つの元素に置換されている、請求項1に記載の磁石材料。
- R元素は、La、Ce、Pr、Nd、Sm、及びEuからなる群より選ばれる少なくとも一つの元素である、請求項1又は請求項2に記載の磁石材料。
- Y元素の50原子%以下は、Zr及びHfからなる群より選ばれる少なくとも一つの1種以上の元素に置換されている、請求項1ないし請求項3のいずれか一項に記載の磁石材料。
- M元素の20原子%以下は、Al、Si、Cr、Mn、Ni、Cu、及びGaからなる群より選ばれる少なくとも一つの元素で置換されている、請求項1ないし請求項4のいずれか一項に記載の磁石材料。
- 請求項1ないし請求項5のいずれか一項に記載の磁石材料を含む永久磁石。
- 請求項1ないし請求項5のいずれか一項に記載の磁石材料の焼結体を具備する永久磁石。
- ステータと、
ロータと、を具備し、
前記ステータ又は前記ロータは、請求項6又は請求項7に記載の永久磁石を有する、回転電機。 - 前記ロータは、シャフトを介してタービンに接続されている、請求項8に記載の回転電機。
- 請求項8又は請求項9に記載の回転電機を具備する、車両。
- 前記ロータは、シャフトに接続されており、
前記シャフトに回転が伝達される、請求項10に記載の車両。
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JP2019168882A JP7234082B2 (ja) | 2019-09-17 | 2019-09-17 | 磁石材料、永久磁石、回転電機、及び車両 |
CN202010106497.0A CN112530653A (zh) | 2019-09-17 | 2020-02-21 | 磁铁材料、永磁铁、旋转电机及车辆 |
US16/809,624 US11677279B2 (en) | 2019-09-17 | 2020-03-05 | Magnet material, permanent magnet, rotary electrical machine, and vehicle |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002313614A (ja) | 2001-04-13 | 2002-10-25 | Toshiba Corp | 磁石材料 |
JP2018103211A (ja) | 2016-12-26 | 2018-07-05 | 日立金属株式会社 | 希土類−遷移金属系強磁性合金の製造方法および希土類−遷移金属系強磁性合金 |
JP2018125512A (ja) | 2016-08-24 | 2018-08-09 | 株式会社東芝 | 磁石材料、永久磁石、回転電機、及び車両 |
JP2019044259A (ja) | 2017-08-31 | 2019-03-22 | 日立金属株式会社 | 希土類磁石用合金 |
JP2019046857A (ja) | 2017-08-30 | 2019-03-22 | 株式会社東芝 | 永久磁石、回転電機、及び車両 |
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JPH08191006A (ja) | 1994-11-08 | 1996-07-23 | Toshiba Corp | 磁性材料 |
JP3171558B2 (ja) | 1995-06-30 | 2001-05-28 | 株式会社東芝 | 磁性材料およびボンド磁石 |
JP4320701B2 (ja) | 2001-11-09 | 2009-08-26 | 日立金属株式会社 | 永久磁石合金及びボンド磁石 |
JP2004263232A (ja) | 2003-02-28 | 2004-09-24 | Hitachi Metals Ltd | 永久磁石合金及びボンド磁石 |
JP6490821B2 (ja) * | 2015-09-15 | 2019-03-27 | 株式会社東芝 | 永久磁石、回転電機、および車 |
US10490325B2 (en) | 2016-08-24 | 2019-11-26 | Kabushiki Kaisha Toshiba | Magnetic material, permanent magnet, rotary electrical machine, and vehicle |
KR101935164B1 (ko) * | 2016-08-24 | 2019-01-03 | 가부시끼가이샤 도시바 | 자석 재료, 영구 자석, 회전 전기 기기, 및 차량 |
JP2018120942A (ja) * | 2017-01-25 | 2018-08-02 | 株式会社東芝 | 永久磁石、回転電機、及び車両 |
JP2020080335A (ja) * | 2017-03-22 | 2020-05-28 | 株式会社東芝 | 永久磁石、回転電機、及び車両 |
JP2020080336A (ja) * | 2017-03-22 | 2020-05-28 | 株式会社東芝 | 永久磁石、回転電機、及び車両 |
WO2019058588A1 (en) | 2017-09-20 | 2019-03-28 | Kabushiki Kaisha Toshiba | MAGNETIC MATERIAL, PERMANENT MAGNET, ROTATING ELECTRIC MACHINE AND VEHICLE |
JP7099924B2 (ja) * | 2018-09-21 | 2022-07-12 | トヨタ自動車株式会社 | 希土類磁石及びその製造方法 |
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- 2019-09-17 JP JP2019168882A patent/JP7234082B2/ja active Active
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- 2020-02-21 CN CN202010106497.0A patent/CN112530653A/zh active Pending
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002313614A (ja) | 2001-04-13 | 2002-10-25 | Toshiba Corp | 磁石材料 |
JP2018125512A (ja) | 2016-08-24 | 2018-08-09 | 株式会社東芝 | 磁石材料、永久磁石、回転電機、及び車両 |
JP2018103211A (ja) | 2016-12-26 | 2018-07-05 | 日立金属株式会社 | 希土類−遷移金属系強磁性合金の製造方法および希土類−遷移金属系強磁性合金 |
JP2019046857A (ja) | 2017-08-30 | 2019-03-22 | 株式会社東芝 | 永久磁石、回転電機、及び車両 |
JP2019044259A (ja) | 2017-08-31 | 2019-03-22 | 日立金属株式会社 | 希土類磁石用合金 |
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US20200204014A1 (en) | 2020-06-25 |
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US11677279B2 (en) | 2023-06-13 |
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