KR20010070453A - 자석 분말 및 등방성 결합 자석 - Google Patents
자석 분말 및 등방성 결합 자석 Download PDFInfo
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- KR20010070453A KR20010070453A KR1020010000828A KR20010000828A KR20010070453A KR 20010070453 A KR20010070453 A KR 20010070453A KR 1020010000828 A KR1020010000828 A KR 1020010000828A KR 20010000828 A KR20010000828 A KR 20010000828A KR 20010070453 A KR20010070453 A KR 20010070453A
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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
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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
- 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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- 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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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
- Y10S977/775—Nanosized powder or flake, e.g. nanosized catalyst
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/832—Nanostructure having specified property, e.g. lattice-constant, thermal expansion coefficient
- Y10S977/838—Magnetic property of nanomaterial
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/902—Specified use of nanostructure
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- Crystallography & Structural Chemistry (AREA)
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- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
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Abstract
Description
샘플 No. | w | ρ(Mg/㎥) | Br(T) | HcJ(kA/m) | (BH)max(kJ/㎥) | Br/ρ(×10-6T·㎥/g) | χirr(×10-7H/m) | 불가역 감자율(%) |
1(비교예) | 0 | 6.27 | 0.82 | 319 | 70.7 | 0.131 | 7.7 | -7.0 |
2(본발명) | 0.04 | 6.26 | 0.87 | 390 | 100.1 | 0.139 | 4.9 | -5.2 |
3(본발명) | 0.1 | 6.32 | 0.90 | 462 | 108.3 | 0.142 | 4.2 | -4.5 |
4(본발명) | 0.2 | 6.29 | 0.91 | 480 | 111.1 | 0.145 | 3.5 | -3.9 |
5(본발명) | 0.5 | 6.30 | 0.88 | 503 | 106.9 | 0.140 | 3.0 | -3.5 |
6(본발명) | 1.5 | 6.33 | 0.83 | 542 | 93.7 | 0.131 | 2.7 | -3.1 |
7(비교예) | 2.2 | 6.31 | 0.76 | 538 | 76.2 | 0.120 | 3.8 | -4.0 |
샘플 No. | 혼련 온도(℃) | 성형방법 | 성형 온도(℃) | ρ(Mg/㎥) | Br(T) | HcJ(kA/m) | (BH)max(kJ/㎥) | Br/ρ(×10-6T·㎥/g) | χirr(×10-7H/m) | 불가역 감자율(%) |
8(본발명) | 200 | 사출성형 | 230 | 5.30 | 0.78 | 532 | 80.4 | 0.147 | 2.2 | -2.4 |
9(본발명) | 203 | 사출성형 | 245 | 5.50 | 0.80 | 521 | 85.2 | 0.145 | 2.5 | -2.7 |
10(본발명) | 211 | 사출성형 | 260 | 5.67 | 0.82 | 513 | 89.8 | 0.144 | 2.8 | -3.0 |
11(본발명) | 216 | 사출성형 | 275 | 5.80 | 0.83 | 506 | 93.2 | 0.143 | 2.9 | -3.2 |
12(본발명) | 220 | 압축성형 | 210 | 5.95 | 0.84 | 501 | 97.3 | 0.141 | 3.1 | -3.5 |
13(본발명) | 224 | 압축성형 | 215 | 6.21 | 0.87 | 495 | 105.2 | 0.140 | 3.7 | -4.0 |
14(본발명) | 230 | 압축성형 | 220 | 6.48 | 0.90 | 481 | 113.4 | 0.139 | 4.4 | -4.6 |
Claims (20)
- 화학식 Rx(Fe1-yCoy)100-x-z-wBzAlw(여기서, R은 1종 이상의 희토류 원소이고, x는 7.1 내지 9.9원자%이며, y는 0 내지 0.30이고, z는 4.6 내지 6.9원자%이며, w는 0.02 내지 1.5원자%이다)의 합금 조성으로 이루어지며, 소프트 자성상(磁性相) 및 하드 자성상을 갖는 복합 조직으로 구성되는 자석 분말에 있어서,결합 수지와 혼합 성형하여 밀도 ρ[Mg/㎥]의 등방성 결합 자석을 형성하는 경우, 실온에서의 잔류 자속 밀도 Br[T]가 수학식 Br/ρ[× 10-6T·㎥/g] ≥ 0.125의 관계를 만족시키고, 상기 등방성 결합 자석은, 실온에서의 자기 특성을 나타내는 J-H도의 감자 곡선(demagnetization curve)에서 상기 J-H도 중의 원점을 통과하고 기울기(J/H)가 -3.8 × 10-6H/m인 직선과의 교점을 출발점으로 하여 측정되는 비가역 대자율(χirr)이 5.0 × 10-7H/m 이하이며, 실온에서의 고유 보자력(HcJ)이 320 내지 720kA/m인 것을 특징으로 하는 자석 분말.
- 제 1 항에 있어서,결합 수지와 혼합 성형하여 등방성 결합 자석을 형성하는 경우, 비가역 감자율(초기 감자율)의 절대값이 6.2% 이하인 자석 분말.
- 제 1 항 또는 제 2 항에 있어서,상기 R이 Nd 및/또는 Pr을 주성분으로 하는 희토류 원소인 자석 분말.
- 제 1 항 또는 제 2 항에 있어서,상기 R이 Pr을 포함하고, 그 비율이 상기 R의 총량에 대해 5 내지 75%인 자석 분말.
- 제 1 항 또는 제 2 항에 있어서,상기 R이 Dy를 포함하고, 그 비율이 상기 R의 총량에 대해 14% 이하인 자석 분말.
- 제 1 항 또는 제 2 항에 있어서,용융 합금을 급냉시켜서 수득되는 자석 분말.
- 제 1 항 또는 제 2 항에 있어서,냉각 롤을 이용하여 제조된 급냉 리본(melt spun robbon)을 분쇄하여 수득되는 자석 분말.
- 제 1 항 또는 제 2 항에 있어서,제조 과정중에 또는 제조후에 1회 이상 열 처리되는 자석 분말.
- 제 1 항 또는 제 2 항에 있어서,평균 입경이 0.5 내지 150㎛인 자석 분말.
- Al을 함유하는 자석 분말을 결합 수지로 결합시켜 형성된 등방성 결합 자석에 있어서,등방성 결합 자석의 밀도 ρ를 [Mg/㎥]로 하는 경우, 실온에서의 잔류 자속 밀도 Br[T]가 수학식 Br/ρ[× 10-6T·㎥/g]≥0.125의 관계를 만족하고, 실온에서의 자기 특성을 나타내는 J-H도의 감자 곡선에서 상기 J-H도 중의 원점을 통과하고 기울기(J/H)가 -3.8 × 10-6H/m인 직선과의 교점을 출발점으로 하여 측정되는 비가역 대자율(χirr)이 5.0 × 10-7H/m 이하이며, 실온에서의 고유 보자력(HcJ)이 320 내지 720kA/m인 것을 특징으로 하는 등방성 결합 자석.
- 제 10 항에 있어서,상기 자석 분말이 R-TM-B-Al계 합금(여기서, R은 1종 이상의 희토류 원소이고, TM은 철을 주성분으로 하는 전이 금속이다)으로 이루어지는 등방성 결합 자석.
- 제 10 항 또는 제 11 항에 있어서,상기 자석 분말이 화학식 Rx(Fe1-yCoy)100-x-z-wBzAlw(여기서, R은 1종 이상의 희토류 원소이고, x는 7.1 내지 9.9원자%이며, y은 0 내지 0.30이고, z는 4.6 내지 6.9원자%이며, w는 0.02 내지 1.5원자%이다)의 합금 조성으로 이루어지는 등방성 결합 자석.
- 제 11 항에 있어서,상기 R이 Nd 및/또는 Pr을 주성분으로 하는 희토류 원소인 등방성 결합 자석.
- 제 11 항에 있어서,상기 R이 Pr을 포함하고, 그 비율이 상기 R의 총량에 대해 5 내지 75%인 등방성 결합 자석.
- 제 11 항에 있어서,상기 R이 Dy를 포함하고, 그 비율이 상기 R의 총량에 대해 14% 이하인 등방성 결합 자석.
- 제 10 항 또는 제 11 항에 있어서,상기 자석 분말의 평균 입경이 0.5 내지 150㎛인 등방성 결합 자석.
- 제 10 항 또는 제 11 항에 있어서,비가역 감자율(초기 감자율)의 절대값이 6.2% 이하인 등방성 결합 자석.
- 제 10 항 또는 제 11 항에 있어서,상기 자석 분말이 소프트 자성상 및 하드 자성상을 갖는 복합 조직으로 구성되는 등방성 결합 자석.
- 제 10 항 또는 제 11 항에 있어서,다극 착자에 제공되거나 이미 다극 착자된 등방성 결합 자석.
- 제 10 항 또는 제 11 항에 있어서,모터에 이용되는 등방성 결합 자석.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2000001805A JP3593940B2 (ja) | 2000-01-07 | 2000-01-07 | 磁石粉末および等方性ボンド磁石 |
JP2000-1805 | 2000-01-07 |
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KR20010070453A true KR20010070453A (ko) | 2001-07-25 |
KR100363372B1 KR100363372B1 (ko) | 2002-12-05 |
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KR1020010000828A KR100363372B1 (ko) | 2000-01-07 | 2001-01-06 | 자석 분말 및 등방성 결합 자석 |
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US (2) | US6527875B2 (ko) |
JP (1) | JP3593940B2 (ko) |
KR (1) | KR100363372B1 (ko) |
CN (1) | CN1155021C (ko) |
TW (1) | TW523762B (ko) |
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JP3275882B2 (ja) * | 1999-07-22 | 2002-04-22 | セイコーエプソン株式会社 | 磁石粉末および等方性ボンド磁石 |
TW505928B (en) * | 1999-06-11 | 2002-10-11 | Seiko Epson Corp | Magnetic powder and isotropic bonded magnet |
JP2001196210A (ja) * | 2000-01-06 | 2001-07-19 | Seiko Epson Corp | 磁石粉末および等方性ボンド磁石 |
JP3593939B2 (ja) * | 2000-01-07 | 2004-11-24 | セイコーエプソン株式会社 | 磁石粉末および等方性ボンド磁石 |
JP2001196211A (ja) * | 2000-01-06 | 2001-07-19 | Seiko Epson Corp | 磁石粉末および等方性ボンド磁石 |
JP3593940B2 (ja) * | 2000-01-07 | 2004-11-24 | セイコーエプソン株式会社 | 磁石粉末および等方性ボンド磁石 |
KR100562681B1 (ko) * | 2000-05-24 | 2006-03-23 | 가부시키가이샤 네오맥스 | 복수의 강자성상을 포함하는 영구자석 및 그 제조방법 |
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JP3488358B2 (ja) | 1997-03-27 | 2004-01-19 | 住友特殊金属株式会社 | 微細結晶永久磁石合金及び永久磁石粉末の製造方法 |
JPH11288807A (ja) | 1998-02-06 | 1999-10-19 | Toda Kogyo Corp | ボンド磁石用偏平木の葉状希土類―鉄―ボロン系磁石合金粒子粉末及びその製造法並びにボンド磁石 |
JP3391704B2 (ja) | 1998-06-15 | 2003-03-31 | セイコーエプソン株式会社 | 希土類磁石 |
JP3186746B2 (ja) | 1998-12-28 | 2001-07-11 | セイコーエプソン株式会社 | 磁石粉末および等方性希土類ボンド磁石 |
DE60031914T8 (de) | 1999-06-11 | 2007-10-31 | Seiko Epson Corp. | Magnetpulver und isotroper Verbundmagnet |
JP3275882B2 (ja) | 1999-07-22 | 2002-04-22 | セイコーエプソン株式会社 | 磁石粉末および等方性ボンド磁石 |
JP3593939B2 (ja) | 2000-01-07 | 2004-11-24 | セイコーエプソン株式会社 | 磁石粉末および等方性ボンド磁石 |
JP3593940B2 (ja) | 2000-01-07 | 2004-11-24 | セイコーエプソン株式会社 | 磁石粉末および等方性ボンド磁石 |
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2000
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2001
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- 2001-01-05 US US09/755,641 patent/US6527875B2/en not_active Expired - Lifetime
- 2001-01-06 KR KR1020010000828A patent/KR100363372B1/ko not_active IP Right Cessation
- 2001-01-07 CN CNB011108320A patent/CN1155021C/zh not_active Expired - Fee Related
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US6951625B2 (en) | 2005-10-04 |
US20030136472A1 (en) | 2003-07-24 |
US20020014284A1 (en) | 2002-02-07 |
TW523762B (en) | 2003-03-11 |
KR100363372B1 (ko) | 2002-12-05 |
JP3593940B2 (ja) | 2004-11-24 |
JP2001196213A (ja) | 2001-07-19 |
CN1155021C (zh) | 2004-06-23 |
US6527875B2 (en) | 2003-03-04 |
CN1307343A (zh) | 2001-08-08 |
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