KR920007007A - 자기적 이방성 및 내식성이 우수한 희토류-Fe-B계 영구자석분말 및 접합자석 - Google Patents
자기적 이방성 및 내식성이 우수한 희토류-Fe-B계 영구자석분말 및 접합자석 Download PDFInfo
- Publication number
- KR920007007A KR920007007A KR1019910016704A KR910016704A KR920007007A KR 920007007 A KR920007007 A KR 920007007A KR 1019910016704 A KR1019910016704 A KR 1019910016704A KR 910016704 A KR910016704 A KR 910016704A KR 920007007 A KR920007007 A KR 920007007A
- Authority
- KR
- South Korea
- Prior art keywords
- recrystallized
- rare earth
- permanent magnet
- magnet powder
- corrosion resistance
- 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
- 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
-
- 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
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)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (4)
- Y를 함유하는 희토류원소중의 적어도 1종류(이하 R로 표시한다.)와 Fe, B를 주성분으로 하는 R-Fe-B계 영구자석분말의 각각의 분말이, 원자백분율에서 R:10-20%, B:3-20%, Ti, V, Nb, Ta, Al 및 Si 중의 1종류 또는 2종류 이상의 합계량 0.001-5.0%를 함유하고, 나머지가 Fe 및 불가피한 불순물로 된 조성과, 정방정구조로 된 R2Fe14B형 금속간 화합물을 주상으로 한 재결정입자가 집합한 재결정집합조직을 갖고, 전기한 재결정집합조직은, 각각의 재결정입자의 최소지름(a)과 최대지름(b)의 비 b/a의 값이 2미만인 형상의 재결정입자가 전체 재결정입자의 50용량%이상 차지하고, 또한 전기한 재결정집합조직을 구성하는 재결정입자의 평균재결정입자지름이 0.05-20㎛인 것을 특징으로 하는 자기적 이방성 및 내식성이 우수한 희토류-Fe-B계 영구자석분말.
- 제1항에 있어서, 전기한 평균 재결정입자지름이 바람직하게는 0.05-3㎛인 것을 특징으로 하는 자기적 이방성 및 내식성이 우수한 희토류-Fe-B계 영구자석분말.
- 제1항 또는 2항에 있어서, 전기한 재결정입자가 집합한 재결정집합조직이 실질적으로 R2Fe14B형 금속간 화합물상만으로 이루어지는 것을 특징으로 하는 자기적 이방성 및 내식성이 우수한 희토류-Fe-B계 영구자석분말.
- 제1항 또는 2항, 3항에 있어서, 자기적 이방성 및 내식성이 우수한 희토류-Fe-B계 영구자석분말로 제조된 것을 특징으로 하는 희토류-Fe-B계 영구자석분말.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2-256704 | 1990-09-26 | ||
JP2256704A JP2586198B2 (ja) | 1990-09-26 | 1990-09-26 | 磁気的異方性および耐食性に優れた希土類―Fe―B系永久磁石粉末およびボンド磁石 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920007007A true KR920007007A (ko) | 1992-04-28 |
KR100204256B1 KR100204256B1 (ko) | 1999-06-15 |
Family
ID=17296317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910016704A KR100204256B1 (ko) | 1990-09-26 | 1991-09-25 | 자기적 이방성 및 내식성이 우수한 희토류-에프이-비 계영구자석분말 및 접합자석 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2586198B2 (ko) |
KR (1) | KR100204256B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990008182A (ko) * | 1995-05-11 | 1999-01-25 | 제프리엠 하스터 | 탄수화물/단백질 크림 대용식품 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5849109A (en) * | 1997-03-10 | 1998-12-15 | Mitsubishi Materials Corporation | Methods of producing rare earth alloy magnet powder with superior magnetic anisotropy |
US6444052B1 (en) | 1999-10-13 | 2002-09-03 | Aichi Steel Corporation | Production method of anisotropic rare earth magnet powder |
US6955729B2 (en) | 2002-04-09 | 2005-10-18 | Aichi Steel Corporation | Alloy for bonded magnets, isotropic magnet powder and anisotropic magnet powder and their production method, and bonded magnet |
JP4635832B2 (ja) * | 2005-11-08 | 2011-02-23 | 日立金属株式会社 | 希土類焼結磁石の製造方法 |
JP4972919B2 (ja) * | 2005-12-02 | 2012-07-11 | 日立金属株式会社 | 希土類焼結磁石及びその製造方法 |
JP4645336B2 (ja) * | 2005-07-15 | 2011-03-09 | 日立金属株式会社 | 希土類焼結磁石及びその製造方法 |
US9551052B2 (en) | 2005-07-15 | 2017-01-24 | Hitachi Metals, Ltd. | Rare earth sintered magnet and method for production thereof |
JP4687493B2 (ja) * | 2006-02-16 | 2011-05-25 | 日立金属株式会社 | 希土類焼結磁石及びその製造方法 |
JP5235264B2 (ja) * | 2005-08-11 | 2013-07-10 | 日立金属株式会社 | 希土類焼結磁石及びその製造方法 |
EP1970916B1 (en) * | 2006-05-18 | 2015-04-01 | Hitachi Metals, Ltd. | R-Fe-B POROUS MAGNET AND METHOD FOR PRODUCING THE SAME |
JP4924615B2 (ja) * | 2006-11-30 | 2012-04-25 | 日立金属株式会社 | R−Fe−B系微細結晶高密度磁石およびその製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0778269B2 (ja) * | 1983-05-31 | 1995-08-23 | 住友特殊金属株式会社 | 永久磁石用希土類・鉄・ボロン系正方晶化合物 |
JP2530641B2 (ja) * | 1986-03-20 | 1996-09-04 | 日立金属株式会社 | 磁気異方性ボンド磁石、それに用いる磁粉及びその製造方法 |
JPH01103805A (ja) * | 1987-07-30 | 1989-04-20 | Tdk Corp | 永久磁石 |
JPS6445103A (en) * | 1987-08-13 | 1989-02-17 | Tdk Corp | Manufacture of rare earth alloy magnet |
-
1990
- 1990-09-26 JP JP2256704A patent/JP2586198B2/ja not_active Expired - Fee Related
-
1991
- 1991-09-25 KR KR1019910016704A patent/KR100204256B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990008182A (ko) * | 1995-05-11 | 1999-01-25 | 제프리엠 하스터 | 탄수화물/단백질 크림 대용식품 |
Also Published As
Publication number | Publication date |
---|---|
KR100204256B1 (ko) | 1999-06-15 |
JP2586198B2 (ja) | 1997-02-26 |
JPH04133406A (ja) | 1992-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR860002840A (ko) | 영구 자석합금과 그 제조방법 | |
KR920007007A (ko) | 자기적 이방성 및 내식성이 우수한 희토류-Fe-B계 영구자석분말 및 접합자석 | |
KR880002202A (ko) | 열 안정성이 우수한 영구자석 | |
EP0362812A3 (en) | Bonded isotropic R-Fe-B-magnet and method for making it | |
KR950015415A (ko) | 회토류 자성분말, 그 영구 자석 및 그 제조 방법 | |
KR910013321A (ko) | 철(Fe)을 베이스로한 연자성 합금 | |
EP0261240A4 (en) | MAGNETIC RECORDING MEDIUM. | |
KR900015188A (ko) | 연자성 합금막 | |
KR880002199A (ko) | 경질 자기재료 | |
FI935472A0 (fi) | Magnetisk pulver av Fe-TR-B -typ och motsvarande smaeltmagneter samt foerfarande foer deras framstaellning | |
KR920007008A (ko) | 자기적 이방성 및 내식성이 우수한 희토류-Fe-Co-B계 영구자석분말 및 접합자석 | |
JPS5567110A (en) | Intermetallic compound magnet | |
EP0571002A3 (en) | Permanent magnet alloy having improved resistance to oxidation and process for production thereof | |
US4721538A (en) | Permanent magnet alloy | |
KR920701999A (ko) | 내식성 희토류-천이금속계 자석 및 그 제조 방법 | |
JPS56150152A (en) | Permanent magnet material | |
Lui et al. | Room temperature magnetic anisotropy of rare-earth transition-metal intermetallics R sub (2) Fe sub (14) C(R= Lu, Gd, Nd) and R sub (2) Fe sub (14) B(R= Gd, Nd). | |
JPS5521521A (en) | Permanent magnet material | |
Tawara | Magnetic Alloys: Cobalt--Rare Earth | |
ATE84902T1 (de) | Verwendung eines materials als hartmagnetisches werkstoff. | |
JPH0468381B2 (ko) | ||
JPS5919980B2 (ja) | 永久磁石合金 | |
US5055146A (en) | Permanent magnet alloy | |
JPS5620140A (en) | Permanent magnet material | |
JP3023512B2 (ja) | 強磁性材料 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20070227 Year of fee payment: 9 |
|
LAPS | Lapse due to unpaid annual fee |