KR900007004A - 영구 자석의 제조방법 - Google Patents
영구 자석의 제조방법 Download PDFInfo
- Publication number
- KR900007004A KR900007004A KR1019890014825A KR890014825A KR900007004A KR 900007004 A KR900007004 A KR 900007004A KR 1019890014825 A KR1019890014825 A KR 1019890014825A KR 890014825 A KR890014825 A KR 890014825A KR 900007004 A KR900007004 A KR 900007004A
- Authority
- KR
- South Korea
- Prior art keywords
- minutes
- sintering treatment
- formed body
- permanent magnet
- treatment lasts
- Prior art date
Links
Classifications
-
- 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
-
- 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
- H01F1/0577—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 sintered
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 소결 시간(t 분)함수로써 발명의 방법에 의해 소결된 Nd2Fe14B의 백분율에 대한 밀도(d)도시도.
제 2 도는 소결 시간(t 분)의 함수로써 발명의 방법에 의해 소결된 Nd2Fe14B의 에너지 생성물(BHmax KJm-3)도시도.
제 3 도는소결 시간(t 분)의 함수로써 발명의 방법에 의해 소결된 Nd2Fe14B의 잔류 자기(T 에서 Br)도시도.
제 4 도는 소결 시간(t 분)함수로써 발명의 방법에 의해 소결된 Nd2Fe14B의 고유 항자력(iHc KAm-1)도시도.
제 5 도는 소결 시간의 함수로써 발명의 방법에 의해 소결된 Nd2Fe14B의 평균 그레인 크리(Dum)도시도.
Claims (7)
- RE가 57내지 71의 원자번호를가진 희토류 금속과 이트륨으로 이루어진 그룹으로부터 선택된 적어도 한 요소이인 RE2Fe14B형의 4각형의 위상을 가진 단단한 자석 재질로 구성되고, 8 내지 30%의 RE, 2 내지 28%의 B 및 42 내지 90%의 Fe로 이루어진 합금을 형성하는 단계 . 합금을 분말로 분쇄하는 단계, 자기장 내에 있든 없든간에 분말을 형성된몸체내로 압축하는 단계 및, 형성된 몸체가 자석화된 후에 900 내지 1200℃의 온도 범위로 형성된 몸체를 소결하는 단계로 이루어진 영구 자석 제조 방법에 있어서, 형성된 몸체는 단일 소결 처리의 유도 가열로 적어도 95%의 가상적인 최대 밀도로 소결되는 것을 특징으로 하는 영구자석의 제조 방법.
- 제 1 항에 있어서, 요소 Nd 및 Dy는 회토류 금속(RE)으로 이용되는 것을 특징으로 하는 영구자석의 제조 방법
- 제 1 또는 2항에 있어서, 소결 처리는 최대로 10분 동안 지속하는 것을 특징으로 하는 영구자석의 제조 방법.
- 제 1 또는 2항에 있어서, 소결 처리는 최대로 5분 동안 지속하는 것을 특징으로 하는 영구자석의 제조방법.
- 제 1,2 또는 3항에 있어서, 소결 처리는 최소로 2분 동안 지속하는 것을 특징으로 하는 영구자석의 제조 방법.
- 제 1,2,3 또는 4항에 있어서, 소결 처리는 최소 0.5와 최대 5분동안 지속하는 것을 특징으로 하는 영구 자석의 제조 방법.
- 전술한 어느 한 항에 있어서, 소결할 경우에 평균 워밍-업율이 200k/min을 초과하는 것을 특징으로 하는 영구자석의 제조 방법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8802543 | 1988-10-17 | ||
NL8802543 | 1988-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR900007004A true KR900007004A (ko) | 1990-05-09 |
Family
ID=19853066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019890014825A KR900007004A (ko) | 1988-10-17 | 1989-10-16 | 영구 자석의 제조방법 |
Country Status (7)
Country | Link |
---|---|
US (1) | US4996023A (ko) |
EP (1) | EP0365079B1 (ko) |
JP (1) | JP2848533B2 (ko) |
KR (1) | KR900007004A (ko) |
CN (1) | CN1043034A (ko) |
AT (1) | ATE106599T1 (ko) |
DE (1) | DE68915680T2 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2780429B2 (ja) * | 1990-03-30 | 1998-07-30 | 松下電器産業株式会社 | 希土類―鉄系磁石の製造方法 |
GB9022033D0 (en) * | 1990-10-10 | 1990-11-21 | Lee Victor C | A method of making a material with permanent magnetic properties |
JP3549382B2 (ja) * | 1997-12-22 | 2004-08-04 | 信越化学工業株式会社 | 希土類元素・鉄・ボロン系永久磁石およびその製造方法 |
EP1011113B1 (en) | 1998-12-11 | 2008-05-28 | Shin-Etsu Chemical Co., Ltd. | Method for the preparation of a rare earth permanent magnet |
JP4415681B2 (ja) * | 2004-01-21 | 2010-02-17 | Tdk株式会社 | 希土類焼結磁石及びその製造方法 |
CN102456478A (zh) * | 2010-10-22 | 2012-05-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | 磁铁及其加工方法和磁控溅射源 |
CN109881113B (zh) * | 2019-02-24 | 2020-05-19 | 东阳市宏丰磁业有限公司 | 一种复合永磁材料及其制备方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3587977T2 (de) * | 1984-02-28 | 1995-05-18 | Sumitomo Spec Metals | Dauermagnete. |
US4765848A (en) * | 1984-12-31 | 1988-08-23 | Kaneo Mohri | Permanent magnent and method for producing same |
JPS62165305A (ja) * | 1986-01-16 | 1987-07-21 | Hitachi Metals Ltd | 熱安定性良好な永久磁石およびその製造方法 |
DE3779481T2 (de) * | 1986-04-15 | 1992-12-24 | Tdk Corp | Dauermagnet und verfahren zu seiner herstellung. |
EP0261579B1 (en) * | 1986-09-16 | 1993-01-07 | Tokin Corporation | A method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder |
US4859410A (en) * | 1988-03-24 | 1989-08-22 | General Motors Corporation | Die-upset manufacture to produce high volume fractions of RE-Fe-B type magnetically aligned material |
US4867809A (en) * | 1988-04-28 | 1989-09-19 | General Motors Corporation | Method for making flakes of RE-Fe-B type magnetically aligned material |
US4881985A (en) * | 1988-08-05 | 1989-11-21 | General Motors Corporation | Method for producing anisotropic RE-FE-B type magnetically aligned material |
-
1989
- 1989-10-11 EP EP89202564A patent/EP0365079B1/en not_active Expired - Lifetime
- 1989-10-11 DE DE68915680T patent/DE68915680T2/de not_active Expired - Fee Related
- 1989-10-11 AT AT89202564T patent/ATE106599T1/de not_active IP Right Cessation
- 1989-10-14 CN CN89108794A patent/CN1043034A/zh active Pending
- 1989-10-16 US US07/421,863 patent/US4996023A/en not_active Expired - Lifetime
- 1989-10-16 JP JP1266367A patent/JP2848533B2/ja not_active Expired - Fee Related
- 1989-10-16 KR KR1019890014825A patent/KR900007004A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JPH02156038A (ja) | 1990-06-15 |
ATE106599T1 (de) | 1994-06-15 |
EP0365079B1 (en) | 1994-06-01 |
US4996023A (en) | 1991-02-26 |
JP2848533B2 (ja) | 1999-01-20 |
EP0365079A1 (en) | 1990-04-25 |
DE68915680D1 (de) | 1994-07-07 |
CN1043034A (zh) | 1990-06-13 |
DE68915680T2 (de) | 1994-12-15 |
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WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |