KR100535945B1 - 나노컴포지트 자석 - Google Patents
나노컴포지트 자석 Download PDFInfo
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- KR100535945B1 KR100535945B1 KR10-2003-7007623A KR20037007623A KR100535945B1 KR 100535945 B1 KR100535945 B1 KR 100535945B1 KR 20037007623 A KR20037007623 A KR 20037007623A KR 100535945 B1 KR100535945 B1 KR 100535945B1
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- 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
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- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
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- 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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- 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
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
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Abstract
Description
산소함유율(ppm) | Br (T) | HcJ (kA/m) | (BH)max (kJ/m3) | ||
실 시 예 | 1 | 53 | 0.912 | 740.1 | 128.2 |
2 | 105 | 0.909 | 738.9 | 126.5 | |
3 | 210 | 0.904 | 725.1 | 122.8 | |
4 | 340 | 0.901 | 733.4 | 118.8 | |
5 | 630 | 0.883 | 721.9 | 111.5 | |
6 | 870 | 0.841 | 703.9 | 102.7 | |
7 | 1320 | 0.741 | 588.3 | 82.4 | |
비교예 | 1 | 1530 | 0.521 | 381.9 | 33.2 |
2 | 1710 | 0.329 | 228.4 | 20.1 | |
3 | 2030 | 0.211 | 103.6 | 6.3 |
산소함유량(ppm) | Br (T) | HcJ (kA/m) | (BH)max (kJ/m3) | ||
실 시 예 | 8 | 10 | 0.909 | 740.4 | 124.3 |
9 | 20 | 0.912 | 734.2 | 127.4 | |
10 | 67 | 0.905 | 720.1 | 123.8 | |
11 | 128 | 0.899 | 714.4 | 120.3 | |
12 | 154 | 0.883 | 703.9 | 115.5 | |
13 | 220 | 0.871 | 682.5 | 111.4 | |
14 | 348 | 0.854 | 685.8 | 98.8 | |
비교예 | 4 | 421 | 0.782 | 568.4 | 85.7 |
5 | 476 | 0.748 | 540.5 | 73.2 |
Claims (14)
- 조성식이 Fe100-x-y-zQxRyTiz, Fe100-x-y-z-nQxRyTizMn, 또는 (Fe1-mTm)100-x-y-z-nQxRyTizMn중의 어느 하나로 표현되고, T는 Co 및 Ni로 되는 군에서 선택되는 적어도 1종의 원소, Q는 B 및 C로 구성되는 군에서 선택되는 적어도 1종의 원소, R은 Nd, Pr, Dy 및 Tb로 구성되는 군에서 선택되는 적어도 1종의 희토류원소이고 적어도 Nd 및 Pr로 구성되는 군에서 선택되는 적어도 1종의 희토류원소를 포함하고, M은 Al, Si, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au 및 Pb로 구성되는 군에서 선택되는 적어도 1종의 원소이고,조성비율 x, y, z, m및 n은 각각,10〈x≤20원자%,6≤y〈10원자%,0.5≤z≤12원자%,0<m≤0.5, 그리고0<n≤10원자%로 표현되는 조성을 구비하고,더욱이 산소함유율이 질량기준으로 1500ppm 이하이고,60체적% 이상의 경자성상을 포함하는 나노컴포지트 자석.
- 제1항에 있어서, 2종 이상의 강자성 결정상과 경자성상, 그리고 연자성상을 함유하고, 연자성상은 철기재의 보라이드상(boride phase)을 포함하고, 연자성상은 경자성상 주위에 바운더리상(boundary phase) 또는 서브바운더리상(sub-boundary phase)으로 나타나는 나노컴포지트 자석.
- 제2항에 있어서, 경자성상의 평균결정입경이 5nm 이상 200nm 이하이고, 연자성상의 평균결정입경이 1nm 이상 50nm 이하의 범위에 있는 조직을 구비하는 나노컴포지트 자석.
- 제3항에 있어서, 상기 연자성상의 평균입경은 경자성상의 평균입경보다 작은 나노컴포지트 자석.
- 제2항에 있어서, 상기 경자성상은 R2Fe14B형 화합물상을 포함하는 나노컴포지트 자석.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 잔류자속밀도(Br)는 0.7T 이상이고, 고유보자력(Hcj)은 480kA/m 이상인 경자기특성을 구비하는 나노컴포지트 자석.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 산소함유율이 질량기준으로 700ppm 이하인 나노컴포지트 자석.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 질소함유율이 질량기준으로 400ppm 이하인 나노컴포지트 자석.
- 제8항에 있어서, 잔류자속밀도(Br)는 0.8T 이상이고, 고유보자력(Hcj)은 550kA/m 이상인 경자기특성을 구비하는 나노컴포지트 자석.
- 조성식이 Fe100-x-y-zQxRyTiz, Fe100-x-y-z-nQxRyTizMn, 또는 (Fe1-mTm)100-x-y-z-nQxRyTizMn 중의 어느 하나로 표현되고, T는 Co 및 Ni로 되는 군에서 선택되는 적어도 1종의 원소, Q는 B 및 C로 구성되는 군에서 선택되는 적어도 1종의 원소, R은 Nd, Pr, Dy 및 Tb로 구성되는 군에서 선택되는 적어도 1종의 희토류원소이고 적어도 Nd 및 Pr로 구성되는 군에서 선택되는 적어도 1종의 희토류원소를 포함하고, M은 Al, Si, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au 및 Pb로 구성되는 군에서 선택되는 적어도 1종의 원소이고,조성비율 x, y, z, m 및 n은 각각,10〈x≤20원자%,6≤y〈10원자%,0.5<z≤12원자%,0<m≤0.5, 그리고0<n≤10원자%로 표현되는 조성을 구비하고,더욱이 질소함유율이 질량기준으로 400ppm 이하인 나노컴포지트 자석.
- 제10항에 있어서, 2종 이상의 강자성 결정상과 경자성상, 그리고 연자성상을 함유하고, 연자성상은 철기재의 보라이드상(boride phase)을 포함하고, 연자성상은 경자성상 주위에 바운더리상(boundary phase) 또는 서브바운더리상(sub-boundary phase)으로 나타나는 나노컴포지트 자석.
- 제11항에 있어서, 경자성의 평균결정입경이 5nm 이상 200nm 이하에서, 연자성상이 평균결정입경이 1nm 이상 50nm 이하의 범위에 있는 조직을 구비하는 나노컴포지트 자석.
- 제12항에 있어서, 상기 연자성상의 평균결정입경은 경자성상의 평균결정입경 보다 작은 나노컴포지트 자석.
- 제10항 내지 제13항 중 어느 한 항에 있어서, 상기 경자성상은 R2Fe14B형 화합물을 포함하는 나노컴포지트 자석.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001358378 | 2001-11-22 | ||
JPJP-P-2001-00358377 | 2001-11-22 | ||
JP2001358377 | 2001-11-22 | ||
JPJP-P-2001-00358378 | 2001-11-22 | ||
PCT/JP2002/012089 WO2003044812A1 (en) | 2001-11-22 | 2002-11-19 | Nanocomposite magnet |
Publications (2)
Publication Number | Publication Date |
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KR20040015037A KR20040015037A (ko) | 2004-02-18 |
KR100535945B1 true KR100535945B1 (ko) | 2005-12-12 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR10-2003-7007623A KR100535945B1 (ko) | 2001-11-22 | 2002-11-19 | 나노컴포지트 자석 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7261781B2 (ko) |
EP (1) | EP1446816B1 (ko) |
KR (1) | KR100535945B1 (ko) |
CN (1) | CN1228791C (ko) |
AT (1) | ATE335280T1 (ko) |
AU (1) | AU2002366140A1 (ko) |
DE (1) | DE60213642T2 (ko) |
WO (1) | WO2003044812A1 (ko) |
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US7217328B2 (en) * | 2000-11-13 | 2007-05-15 | Neomax Co., Ltd. | Compound for rare-earth bonded magnet and bonded magnet using the compound |
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-
2002
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- 2002-11-19 DE DE60213642T patent/DE60213642T2/de not_active Expired - Lifetime
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- 2002-11-19 CN CNB028036239A patent/CN1228791C/zh not_active Expired - Fee Related
- 2002-11-19 EP EP02803542A patent/EP1446816B1/en not_active Expired - Lifetime
- 2002-11-19 WO PCT/JP2002/012089 patent/WO2003044812A1/en active IP Right Grant
- 2002-11-19 US US10/432,862 patent/US7261781B2/en not_active Expired - Fee Related
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CN1484837A (zh) | 2004-03-24 |
EP1446816A4 (en) | 2005-03-02 |
EP1446816A1 (en) | 2004-08-18 |
CN1228791C (zh) | 2005-11-23 |
WO2003044812A1 (en) | 2003-05-30 |
EP1446816B1 (en) | 2006-08-02 |
AU2002366140A1 (en) | 2003-06-10 |
ATE335280T1 (de) | 2006-08-15 |
KR20040015037A (ko) | 2004-02-18 |
US20040051614A1 (en) | 2004-03-18 |
DE60213642T2 (de) | 2006-12-07 |
US7261781B2 (en) | 2007-08-28 |
DE60213642D1 (de) | 2006-09-14 |
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