KR930012157A - 희토류자석합금분말의 제조법 - Google Patents
희토류자석합금분말의 제조법 Download PDFInfo
- Publication number
- KR930012157A KR930012157A KR1019920023863A KR920023863A KR930012157A KR 930012157 A KR930012157 A KR 930012157A KR 1019920023863 A KR1019920023863 A KR 1019920023863A KR 920023863 A KR920023863 A KR 920023863A KR 930012157 A KR930012157 A KR 930012157A
- Authority
- KR
- South Korea
- Prior art keywords
- alloy
- rare earth
- vacuum tube
- manufacturing
- alloy powder
- Prior art date
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Classifications
-
- 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
-
- 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
- H01F1/0573—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 obtained by reduction or by hydrogen decrepitation or embrittlement
-
- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/023—Hydrogen absorption
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
본 발명은 수소흡장처리후에 탈수소처리를 실시하여 안정하고 우수한 자기특성을 나타내는 회토류자석합금분말의 제조법을 개시한다.
본 발명의 회토류자석합금분말의 제조법에서는, 균질화처리한 회토류자석합금재를 750 내지 950℃의 온도에서 수소흡장처리한 후, 750 내지 950℃의 온도범위에서 탈수소처리해서, 냉각한 후 분쇄한다.
이와 같은 수소흡장처리 및 탈수소처리는 진공관형상로 내에서 행하여지며, 탈수소처리공정에서 합금재료는 탈수소처리시에 발생하는 흡열반응에 의한 온도저하가 최대 -50℃이내로 유지되도록 된다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1도는 본 발명에서 사용하는 진공관형상로를 나타내는 단면개략도.
Claims (2)
- (a)이트륨(Y)을 함유하는 회토류원소(R)와, 철(Fe)혹은 철의 일부를 코발트(Co)로 치환한 성분(T)와, 붕소(B)를 주성분으로 하는 R-T-B계 합금으로 표시되는 회토류합금재를 준비하는 단계와, (b)이어서, 전기한 합금재를 600℃ 내지 1200℃의 온도범위로 유지하면서, 균질화 처리하여 균질화처리된 합금을 형성하는 단계와, (c)진공관형상로를 준비하는 단계와, (d)전기한 균질화처리된 합금을 진공관형상로 내에 장입하는 단계와,(e)이어서 전기한 진공관형상로를 실온으로 부터 500℃까지 승온하여 진공관형상로 내의 균질화처리된 수소를 흡장시킨 후, 진공관형상로 750℃ 내지 950℃의 온도범위로 유지하여서 수소 흡장합금을 형성하는 단계와, (f)그후, 진공관형성로내에 장입되어 있는 수소흡장합금을 750℃ 내지 950℃의 온도범위로 유지하고, 탈수소처리 도중에 발생하는 흡열반응에 의한 합금이 온도저하를 -50℃이내로 억제하면서 전기한 수소흡장합금을 탈수소처리하여 탈수소처리된 합금을 형성하는 단계와, (g)전기한 탈수소처리한 합금을 냉각, 분쇄하여서, 미세한 강자성화합물의 재결정집합조직을 보유하는 R-T-B계 희토류자석 합금분말을 제조하는 단계로 구성되는 것을 특징으로 하는 강자성화합물을 함유하는 희토류자석합금분말의 제조법.
- 제1항에 있어서, 전기한 단계(f)중에 발생하는 흡열반응에 의한 합금의 온도저하를 최대 -200℃로 억제하는 것을 특징으로 하는 회토류자석합금분말의 제조법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP91-349934 | 1991-12-10 | ||
JP3349934A JPH05163510A (ja) | 1991-12-10 | 1991-12-10 | 希土類磁石合金粉末の製造法 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR930012157A true KR930012157A (ko) | 1993-07-20 |
Family
ID=18407098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920023863A KR930012157A (ko) | 1991-12-10 | 1992-12-10 | 희토류자석합금분말의 제조법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5417773A (ko) |
EP (1) | EP0546799B1 (ko) |
JP (1) | JPH05163510A (ko) |
KR (1) | KR930012157A (ko) |
CN (1) | CN1033623C (ko) |
DE (1) | DE69210563T2 (ko) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994015345A1 (en) * | 1992-12-28 | 1994-07-07 | Aichi Steel Works, Ltd. | Rare earth magnetic powder, method of its manufacture, and resin-bonded magnet |
JPH07106110A (ja) * | 1993-10-06 | 1995-04-21 | Yasunori Takahashi | ボンド磁石製造用粉末組成物、磁気異方性永久磁石及び磁気異方性永久磁石の製造法 |
GB2316541B (en) * | 1994-06-09 | 1998-11-18 | Chipscale Inc | Resistor fabrication |
CN1059367C (zh) * | 1995-03-20 | 2000-12-13 | 中国核动力研究设计院 | 氢化法生产锆和锆-2合金粉末的制备工艺 |
GB2310432B (en) * | 1996-02-23 | 1998-05-27 | Aichi Steel Works Ltd | Production method production apparatus and heat treatment apparatus for anisotropic magnet powder |
US5851312A (en) * | 1996-02-26 | 1998-12-22 | Aichi Steel Works, Ltd. | Production method, production apparatus and heat treatment apparatus for anisotropic magnet powder |
JP2881409B2 (ja) * | 1996-10-28 | 1999-04-12 | 愛知製鋼株式会社 | 異方性磁石粉末の製造方法 |
CN1060700C (zh) * | 1996-11-26 | 2001-01-17 | 宁波科宁达工业有限公司 | 低温破碎稀土永磁合金锭的方法 |
JP3120172B2 (ja) * | 1997-12-22 | 2000-12-25 | 愛知製鋼株式会社 | 希土類系磁石粉末の製造装置 |
US6403024B1 (en) * | 1999-02-19 | 2002-06-11 | Sumitomo Special Metals Co., Ltd. | Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer |
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 |
WO2004064085A1 (ja) * | 2003-01-16 | 2004-07-29 | Aichi Steel Corporation | 異方性磁石粉末の製造方法 |
CN102470442B (zh) | 2009-07-31 | 2014-01-01 | 日立金属株式会社 | 稀土类磁铁用原料合金的氢粉碎粉的回收方法及回收装置 |
CN102189264A (zh) * | 2010-03-18 | 2011-09-21 | Tdk株式会社 | 稀土合金粉末的制造方法、稀土合金粉末和永磁体 |
CN102294471A (zh) * | 2010-06-24 | 2011-12-28 | 曹水秀 | Nd-Fe-B永磁体的制造方法 |
KR101269408B1 (ko) * | 2012-10-10 | 2013-05-30 | 한국기계연구원 | 수소방출및재결합단계를 포함하는 희토류-철-보론계 희토류자성분말의 제조방법 |
KR101382234B1 (ko) * | 2013-03-15 | 2014-04-10 | 한국기계연구원 | 에이치디디알공법 중 수소방출및재결합단계 제어방법 및 수소방출및재결합단계를 실시하여 제조된 희토류-철-보론계 희토류자성분말 |
TW201517075A (zh) | 2013-06-17 | 2015-05-01 | Urban Mining Technology Company | 再生磁鐵以產生具有改善或恢復磁性性能的 nd-fe-b 磁鐵 |
US9336932B1 (en) | 2014-08-15 | 2016-05-10 | Urban Mining Company | Grain boundary engineering |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1012477B (zh) * | 1987-08-19 | 1991-05-01 | 三菱金属株式会社 | 稀土-铁-硼磁体粉末及其制备方法 |
EP0411571B1 (en) * | 1989-07-31 | 1994-06-01 | Mitsubishi Materials Corporation | Rare earth permanent magnet powder, method for producing same and bonded magnet |
-
1991
- 1991-12-10 JP JP3349934A patent/JPH05163510A/ja active Pending
-
1992
- 1992-12-08 DE DE69210563T patent/DE69210563T2/de not_active Expired - Fee Related
- 1992-12-08 EP EP92311174A patent/EP0546799B1/en not_active Expired - Lifetime
- 1992-12-10 KR KR1019920023863A patent/KR930012157A/ko not_active Application Discontinuation
- 1992-12-10 CN CN92113705A patent/CN1033623C/zh not_active Expired - Fee Related
-
1994
- 1994-10-06 US US08/319,465 patent/US5417773A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5417773A (en) | 1995-05-23 |
JPH05163510A (ja) | 1993-06-29 |
EP0546799B1 (en) | 1996-05-08 |
DE69210563T2 (de) | 1996-11-28 |
DE69210563D1 (de) | 1996-06-13 |
CN1033623C (zh) | 1996-12-25 |
CN1073384A (zh) | 1993-06-23 |
EP0546799A1 (en) | 1993-06-16 |
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