KR20010062566A - 철기합금 영구자석분말 및 그 제조방법 - Google Patents
철기합금 영구자석분말 및 그 제조방법 Download PDFInfo
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- KR20010062566A KR20010062566A KR1020000079369A KR20000079369A KR20010062566A KR 20010062566 A KR20010062566 A KR 20010062566A KR 1020000079369 A KR1020000079369 A KR 1020000079369A KR 20000079369 A KR20000079369 A KR 20000079369A KR 20010062566 A KR20010062566 A KR 20010062566A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
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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
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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
- H01F1/0578—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
-
- 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
- H01F1/0579—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B with exchange spin coupling between hard and soft nanophases, e.g. nanocomposite spring magnets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Nanotechnology (AREA)
- Composite Materials (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
No. | 합금조성(원자%) | 롤표면속도Vs(m/s) | 열처리온도(℃) | 합금후(㎛) | ||||
R | Fe | B | M | |||||
실시예 | 1 | Nd3 | 잔부 | 18.5 | - | 12 | 620 | 87 |
2 | Nd4 | 잔부 | 18.5 | - | 8 | 640 | 144 | |
3 | Nd4.5 | 잔부 | 17.0 | Co1 | 2 | 650 | 255 | |
4 | Nd5.5 | 잔부 | 19.0 | Co5+Cr5 | 6 | 680 | 170 | |
5 | Nd2.5+Pr2 | 잔부 | 16.0 | Co3+Ga1 | 9 | 630 | 120 | |
6 | Nd3.5+Dy1 | 잔부 | 18.5 | Co3+Si1 | 7 | 640 | 150 | |
비교예 | 7 | Nd3 | 잔부 | 18.5 | - | 15 | 620 | 61 |
8 | Nd4.5 | 잔부 | 17.0 | Co1 | 20 | 650 | 30 | |
9 | Nd3.5+Dy1 | 잔부 | 18.5 | Co3+Si1 | 30 | 640 | 22 |
No. | 자석분의 자기특성 | 단축/장축 | |||
Br(T) | HcJ(kA/m) | (BH)max(kJ/㎥) | |||
실시예 | 1 | 1.22 | 242 | 76 | 0.33 |
2 | 1.08 | 265 | 82 | 0.58 | |
3 | 1.11 | 300 | 95 | 0.83 | |
4 | 0.79 | 610 | 72 | 0.92 | |
5 | 1.20 | 310 | 98 | 0.44 | |
6 | 1.15 | 360 | 102 | 0.75 | |
비교예 | 7 | 1.21 | 250 | 72 | 0.21 |
8 | 1.09 | 305 | 89 | 0.14 | |
9 | 1.14 | 358 | 98 | 0.08 |
No. | 압축성형본드자석의 자기특성 | 자분충진율(%) | |||
Br(T) | HcJ(kA/m) | (BH)max(kJ㎥) | |||
실시예 | 1 | 0.99 | 243 | 56 | 81 |
2 | 0.89 | 264 | 61 | 82 | |
3 | 0.93 | 297 | 71 | 84 | |
4 | 0.67 | 598 | 54 | 85 | |
5 | 0.98 | 310 | 72 | 82 | |
6 | 0.95 | 358 | 76 | 83 | |
비교예 | 7 | 0.93 | 248 | 50 | 77 |
8 | 0.83 | 299 | 59 | 76 | |
9 | 0.86 | 354 | 65 | 75 |
Claims (15)
- Fe-R-B계 합금의 용탕을 급랭법에 의하여 냉각되고, 그것에 의하여 두께 80㎛ 이상 300㎛ 이하의 급랭응고합금(rapidly solidified alloy)를 형성하는 냉각공정과;열처리에 의하여 상기 급랭응고합금을 결정화하고, 영구자석특성을 구비하는 합금을 생성하는 공정과;상기 합금을 분쇄하는 것에 의하여, 평균입경 50㎛ 이상 300㎛ 이하이고, 더욱이 분말입자의 장축방향의 사이즈에 대한 단축방향의 사이즈의 비가 0.3 이상 1.0 이하의 분말을 형성하는 공정을 포함하는 철기합금 영구자석분말의 제조방법.
- 제1항에 있어서, 상기 열처리 전에 급랭응고합금을 조분쇄하는 공정을 더 포함하는 철기합금 영구자석분말의 제조방법.
- 제1항에 있어서, 상기 분쇄는, 핀밀장치에서 수행하는 철기합금 영구자석분말의 제조방법.
- 제1항에 있어서, 상기 급랭응고합금은, 상기 열처리 전에 있어서 Fe23B6, Fe3B, R2Fe14B, 및 R2Fe23B3로 되는 군 중에서 선택되는 적어도 하나의 준안정상 및/또는 비정질상을 함유하고 있는 철기합금 영구자석분말의 제조방법.
- 제1항에 있어서, 상기 영구자석특성을 구비하는 합금은, Fe100-x-yRxBy(R은 Pr, Nd, Dy, 및 Tb로 되는 군에서 선택되는 적어도 1종의 희토류 원소)의 조성식으로 표시되는 영구자석으로, 상기 조성식 중의 x 및 y가, 1원자% ≤x≤6원자%, 및 15원자%≤y≤25원자%의 관계를 만족하고, 더욱이 구성상으로서 Fe, Fe와 B의 합금, 및 R2Fe14B형 결정구조를 구비하는 화합물을 포함하고, 각 구성상의 평균결정입경이 150nm 이하인 철기합금 영구자석분말의 제조방법.
- 제1항에 있어서, 상기 급랭공정에 있어서, 롤표면속도가 1m/초 이상 13m/초 이하의 범위에서 회전하는 롤에 상기 용탕을 접촉시키고, 이것에 의하여 상기 급랭응고합금을 형성하는 철기합금 영구자석분말의 제조방법.
- 제6항에 있어서, 상기 냉각공정은, 감압분위기 하에 있어서 상기 Fe-R-B계 합금의 용탕을 급랭하는 공정을 포함하는 철기합금 영구자석분말의 제조방법.
- 제7항에 있어서, 상기 감압분위기의 절대압력은 50kPa 이하인 것을 특징으로 하는 철기합금 영구자석분말의 제조방법.
- 제1항에 있어서, 상기 열처리에 의하여 결정화된 상기 합금은, 나노컴포지트 자석인 철기합금 영구자석분말의 제조방법.
- 제1항 내지 제9항 중 어느 한 항에 기재된 철기합금 영구자석분말의 제조방법에 의하여 제조되는 상기 철기합금 영구자석분말을 준비하는 공정과;상기 철기합금 영구자석분말을 성형하는 공정을 포함하는 본드자석(bonded magnet)의 제조방법.
- 제10항에 있어서, 압축성형법에 의하여 80%를 넘는 충진율로 상기 철기합금 영구자석분말을 성형하는 것을 특징으로 하는 본드자석의 제조방법.
- 제10항에 있어서, 사출성형법에 의하여 65%를 넘는 충진율로 상기 철기합금 영구자석분말을 성형하는 것을 특징으로 하는 본드자석의 제조방법.
- Fe100-x-yRxBy(Fe는 철, B는 보론, R은 Pr, Nd, Dy, 및 Tb로 되는 군에서 선택되는 적어도 1종의 희토류 원소)의 조성식으로 표시되는 철기합금 영구자석분말로서,상기 조성식 중의 x 및 y가, 1원자% ≤x≤6원자%, 및 15원자%≤y≤25원자%의 관계를 만족하고, 더욱이 각 구성상의 평균결정입경이 150nm 이하, 평균입경은 300㎛ 이하이고,분말의 장축방향 사이즈에 대한 단축방향 사이즈의 비가 0.3 이상 1.0 이하의 철기합금 영구자석 분말.
- 제13항에 기재된 철기합금 영구자석분말을 포함하는 본드자석.
- 제14항에 기재된 본드자석을 구비하는 전기기기.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP??11-362103 | 1999-12-21 | ||
JP36210399 | 1999-12-21 |
Publications (2)
Publication Number | Publication Date |
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KR20010062566A true KR20010062566A (ko) | 2001-07-07 |
KR100745198B1 KR100745198B1 (ko) | 2007-08-01 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020000079369A KR100745198B1 (ko) | 1999-12-21 | 2000-12-20 | 철기재 합금 영구자석분말 및 그 제조방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US6478889B2 (ko) |
KR (1) | KR100745198B1 (ko) |
CN (1) | CN1162870C (ko) |
DE (1) | DE10064024A1 (ko) |
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KR100562681B1 (ko) | 2000-05-24 | 2006-03-23 | 가부시키가이샤 네오맥스 | 복수의 강자성상을 포함하는 영구자석 및 그 제조방법 |
US7217328B2 (en) * | 2000-11-13 | 2007-05-15 | Neomax Co., Ltd. | Compound for rare-earth bonded magnet and bonded magnet using the compound |
RU2250524C2 (ru) * | 2001-05-15 | 2005-04-20 | Неомакс Ко., Лтд. | Нанокомпозитные магниты из содержащего редкоземельный элемент сплава на основе железа |
DE60215665T2 (de) * | 2001-07-31 | 2007-02-08 | Neomax Co., Ltd. | Verfahren zum herstellen eines nanozusammensetzungsmagneten unter verwendung eines atomisierungsverfahrens |
JP4069727B2 (ja) * | 2001-11-20 | 2008-04-02 | 日立金属株式会社 | 希土類系ボンド磁石用コンパウンドおよびそれを用いたボンド磁石 |
EP1446816B1 (en) * | 2001-11-22 | 2006-08-02 | Neomax Co., Ltd. | Nanocomposite magnet |
JP4089212B2 (ja) * | 2001-11-28 | 2008-05-28 | 日立金属株式会社 | 希土類合金の造粒粉の製造方法および希土類合金焼結体の製造方法 |
JP4179973B2 (ja) * | 2003-11-18 | 2008-11-12 | Tdk株式会社 | 焼結磁石の製造方法 |
TW200536788A (en) * | 2004-05-07 | 2005-11-16 | Spin Technology Corp | Magnetic material containing praseodymium |
DE102006028389A1 (de) * | 2006-06-19 | 2007-12-27 | Vacuumschmelze Gmbh & Co. Kg | Magnetkern und Verfahren zu seiner Herstellung |
GB2454822B (en) * | 2006-07-12 | 2010-12-29 | Vacuumschmelze Gmbh & Co Kg | Method for the production of magnet cores, magnet core and inductive component with a magnet core |
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2000
- 2000-12-13 US US09/734,884 patent/US6478889B2/en not_active Expired - Lifetime
- 2000-12-20 KR KR1020000079369A patent/KR100745198B1/ko active IP Right Grant
- 2000-12-20 CN CNB001358693A patent/CN1162870C/zh not_active Expired - Fee Related
- 2000-12-21 DE DE10064024A patent/DE10064024A1/de not_active Ceased
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Publication number | Publication date |
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US20010015239A1 (en) | 2001-08-23 |
KR100745198B1 (ko) | 2007-08-01 |
CN1303108A (zh) | 2001-07-11 |
CN1162870C (zh) | 2004-08-18 |
US6478889B2 (en) | 2002-11-12 |
DE10064024A1 (de) | 2001-06-28 |
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