KR0131060B1 - R-fe-b permanent magnet material & processing method - Google Patents
R-fe-b permanent magnet material & processing methodInfo
- Publication number
- KR0131060B1 KR0131060B1 KR93021615A KR930021615A KR0131060B1 KR 0131060 B1 KR0131060 B1 KR 0131060B1 KR 93021615 A KR93021615 A KR 93021615A KR 930021615 A KR930021615 A KR 930021615A KR 0131060 B1 KR0131060 B1 KR 0131060B1
- Authority
- KR
- South Korea
- Prior art keywords
- alloy
- permanent magnet
- pulverization
- max
- phase
- 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
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- 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
-
- 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
-
- 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
- B22F2202/00—Treatment under specific physical conditions
- B22F2202/05—Use of magnetic field
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
It is an object of the present invention to provide R-Fe-B permanent magnet materials having a good oxidation resistance and magnetic characteristics, and a process of producing the same capable of pulverizing efficiently, whereby an R-Fe-B molten alloy having a specific composition is casted into a cast piece having a specific plate thickness and a structure, in which an R-rich phase is finely separated below 5 mu m, by a strip casting process, the cast piece is subjected to a Hydrogenation for spontaneous decay, and thereafter, an alloy powder is dehydrogenated and stabilized for pulverization so as to fractionize crystal grains of a main phase constituting an alloy ingot, thereby the powder having a uniform grain distribution can be produced at an efficiency of about twice as much as the conventional process, and the R-rich phase and an R2Fe14B phase are also fractionized at the time of pulverization, thus by magnetization by pressing after the orientation using a pulse magnetic field, a high performance R-Fe-B permanent magnet having, a good oxidation resistance and magnetic characteristics of the magnetic alloy, particularly, a total value A + B of a maximum energy product value (BH) max (MGOe); A and a characteristic value; B of a coercive force iHc(kOe) of 59 or more and the squareness of demagnetization curve {(Br<2>/4)/(BH) max} of 1.01 to 1.045 is obtained.
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP93-192886 | 1993-07-06 | ||
JP19288693A JP3415208B2 (en) | 1993-07-06 | 1993-07-06 | Method for producing R-Fe-B permanent magnet material |
JP93-207191 | 1993-07-28 | ||
JP20719093A JP3151087B2 (en) | 1993-07-28 | 1993-07-28 | Method for producing raw material powder for R-Fe-B-based permanent magnet and alloy powder for adjusting raw material powder |
JP93-207192 | 1993-07-28 | ||
JP93-207190 | 1993-07-28 | ||
JP5207192A JPH0745412A (en) | 1993-07-28 | 1993-07-28 | R-fe-b permanent magnet material |
JP20719193A JP3151088B2 (en) | 1993-07-28 | 1993-07-28 | Method for producing raw material powder for R-Fe-B-based permanent magnet and alloy powder for adjusting raw material powder |
JP93-212171 | 1993-08-03 | ||
JP21217193A JP3299000B2 (en) | 1993-08-03 | 1993-08-03 | Method for producing raw material powder for R-Fe-B-based permanent magnet and alloy powder for adjusting raw material powder |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950004295A KR950004295A (en) | 1995-02-17 |
KR0131060B1 true KR0131060B1 (en) | 1998-04-24 |
Family
ID=27529067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR93021615A KR0131060B1 (en) | 1993-07-06 | 1993-10-15 | R-fe-b permanent magnet material & processing method |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0633581B1 (en) |
KR (1) | KR0131060B1 (en) |
CN (1) | CN1076115C (en) |
AT (1) | ATE165477T1 (en) |
DE (1) | DE69318147T2 (en) |
RU (1) | RU2113742C1 (en) |
TW (1) | TW272293B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100446193B1 (en) * | 2002-05-29 | 2004-08-30 | 주식회사 태평양금속 | Method and Apparatus for manufacturing permanent magnet using electric conductor film |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5666635A (en) * | 1994-10-07 | 1997-09-09 | Sumitomo Special Metals Co., Ltd. | Fabrication methods for R-Fe-B permanent magnets |
US5858123A (en) * | 1995-07-12 | 1999-01-12 | Hitachi Metals, Ltd. | Rare earth permanent magnet and method for producing the same |
US6319335B1 (en) * | 1999-02-15 | 2001-11-20 | Shin-Etsu Chemical Co., Ltd. | Quenched thin ribbon of rare earth/iron/boron-based magnet alloy |
DE60028659T2 (en) | 1999-06-08 | 2007-05-31 | Shin-Etsu Chemical Co., Ltd. | Thin band of a permanent magnet alloy based on rare earths |
US6527874B2 (en) | 2000-07-10 | 2003-03-04 | Sumitomo Special Metals Co., Ltd. | Rare earth magnet and method for making same |
US7618497B2 (en) * | 2003-06-30 | 2009-11-17 | Tdk Corporation | R-T-B based rare earth permanent magnet and method for production thereof |
JP4179973B2 (en) | 2003-11-18 | 2008-11-12 | Tdk株式会社 | Manufacturing method of sintered magnet |
US7955443B2 (en) * | 2006-04-14 | 2011-06-07 | Shin-Etsu Chemical Co., Ltd. | Method for preparing rare earth permanent magnet material |
JP4656323B2 (en) | 2006-04-14 | 2011-03-23 | 信越化学工業株式会社 | Method for producing rare earth permanent magnet material |
CN100394518C (en) * | 2006-08-04 | 2008-06-11 | 北京工业大学 | Method for preparing high coercive force sintering rare-earth-iron-p permanent magnetic material |
KR101456841B1 (en) * | 2006-09-14 | 2014-11-03 | 가부시키가이샤 알박 | Permanent magnet and process for producing the same |
DE112007002815T5 (en) | 2006-11-21 | 2009-12-17 | ULVAC, Inc., Chigasaki | A method of manufacturing an oriented body, a molded body and a sintered body, and a method of manufacturing a permanent magnet |
DE112007003107T5 (en) * | 2006-12-21 | 2009-10-29 | ULVAC, Inc., Chigasaki | Permanent magnet and method for its production |
CN101393791B (en) * | 2007-09-21 | 2012-10-03 | 有研稀土新材料股份有限公司 | Anisotropic magnetic powder and manufacturing method thereof |
CN101872668B (en) * | 2009-04-23 | 2014-06-25 | 北京中科三环高技术股份有限公司 | Sintered NdFeB rear-earth permanent magnet with fine magnetization characteristic and manufacturing method thereof |
CN102087917B (en) * | 2009-12-02 | 2014-06-25 | 北京中科三环高技术股份有限公司 | Preparation method and pressing device for radiation-oriented magnet ring or multipolar magnet ring |
JP5572673B2 (en) | 2011-07-08 | 2014-08-13 | 昭和電工株式会社 | R-T-B system rare earth sintered magnet alloy, R-T-B system rare earth sintered magnet alloy manufacturing method, R-T-B system rare earth sintered magnet alloy material, R-T-B system rare earth Sintered magnet, method for producing RTB-based rare earth sintered magnet, and motor |
CA2851222A1 (en) | 2011-08-17 | 2013-02-21 | Regents Of The University Of Minnesota | Iron nitride permanent magnet and technique for forming iron nitride permanent magnet |
KR101485282B1 (en) | 2011-12-27 | 2015-01-21 | 인터메탈릭스 가부시키가이샤 | Sintered neodymium magnet |
EP2800108B1 (en) | 2011-12-27 | 2018-04-11 | Intermetallics Co., Ltd. | Sintered neodymium magnet |
JP6119548B2 (en) | 2012-10-17 | 2017-04-26 | 信越化学工業株式会社 | Manufacturing method of rare earth sintered magnet |
CN103887028B (en) * | 2012-12-24 | 2017-07-28 | 北京中科三环高技术股份有限公司 | A kind of Sintered NdFeB magnet and its manufacture method |
JP6238444B2 (en) | 2013-01-07 | 2017-11-29 | 昭和電工株式会社 | R-T-B rare earth sintered magnet, R-T-B rare earth sintered magnet alloy and method for producing the same |
EP2954540A4 (en) | 2013-02-07 | 2017-06-28 | Regents of the University of Minnesota | Iron nitride permanent magnet and technique for forming iron nitride permanent magnet |
JP2016536777A (en) | 2013-06-27 | 2016-11-24 | リージェンツ オブ ザ ユニバーシティ オブ ミネソタ | Magnet containing iron nitride material and iron nitride material |
AU2015235987B2 (en) | 2014-03-28 | 2017-03-16 | Regents Of The University Of Minnesota | Iron nitride magnetic material including coated nanoparticles |
US9994949B2 (en) | 2014-06-30 | 2018-06-12 | Regents Of The University Of Minnesota | Applied magnetic field synthesis and processing of iron nitride magnetic materials |
US10072356B2 (en) | 2014-08-08 | 2018-09-11 | Regents Of The University Of Minnesota | Magnetic material including α″-Fe16(NxZ1-x)2 or a mixture of α″-Fe16Z2 and α″-Fe16N2, where Z includes at least one of C, B, or O |
EP3177752A1 (en) | 2014-08-08 | 2017-06-14 | Regents of the University of Minnesota | Forming iron nitride hard magnetic materials using chemical vapor deposition or liquid phase epitaxy |
WO2016022711A1 (en) | 2014-08-08 | 2016-02-11 | Regents Of The University Of Minnesota | Multilayer iron nitride hard magnetic materials |
US10002694B2 (en) | 2014-08-08 | 2018-06-19 | Regents Of The University Of Minnesota | Inductor including alpha″-Fe16Z2 or alpha″-Fe16(NxZ1-x)2, where Z includes at least one of C, B, or O |
DE102016205243A1 (en) * | 2016-03-30 | 2017-10-05 | Thyssenkrupp Ag | Apparatus and method for processing a sample material |
CN108481877B (en) * | 2018-03-10 | 2020-06-23 | 葛理想 | Fragmentation treatment process of magnetic material for electromagnetic shielding |
US12018386B2 (en) | 2019-10-11 | 2024-06-25 | Regents Of The University Of Minnesota | Magnetic material including α″-Fe16(NxZ1-x)2 or a mixture of α″-Fe16Z2 and α″-Fe16N2, where Z includes at least one of C, B, or O |
CN115747611B (en) * | 2022-10-13 | 2023-10-20 | 包头金山磁材有限公司 | Auxiliary alloy cast sheet, high-remanence high-coercivity neodymium-iron-boron permanent magnet and preparation method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1316375C (en) * | 1982-08-21 | 1993-04-20 | Masato Sagawa | Magnetic materials and permanent magnets |
JPS62291901A (en) * | 1986-06-12 | 1987-12-18 | Toshiba Corp | Permanent magnet |
CN1051864C (en) * | 1986-08-04 | 2000-04-26 | 住友特殊金属株式会社 | Rare earth permanent magnet having excellent corrosion resistance |
GB2201426B (en) * | 1987-02-27 | 1990-05-30 | Philips Electronic Associated | Improved method for the manufacture of rare earth transition metal alloy magnets |
EP0304054B1 (en) * | 1987-08-19 | 1994-06-08 | Mitsubishi Materials Corporation | Rare earth-iron-boron magnet powder and process of producing same |
JPH01119001A (en) * | 1987-10-30 | 1989-05-11 | Kubota Ltd | Manufacture of permanent magnetic powder containing rare earth element |
JPH0529117A (en) * | 1990-10-22 | 1993-02-05 | Kawasaki Steel Corp | Manufacture of rare earth-transition metal anisotropic magnetic powder |
DE69202515T2 (en) * | 1991-06-04 | 1995-09-21 | Shinetsu Chemical Co | Process for the production of two-phase permanent magnets based on rare earths. |
JP2782024B2 (en) * | 1992-01-29 | 1998-07-30 | 住友特殊金属株式会社 | Method for producing raw material powder for R-Fe-B-based permanent magnet |
-
1993
- 1993-10-14 RU RU93049098A patent/RU2113742C1/en active
- 1993-10-14 DE DE69318147T patent/DE69318147T2/en not_active Expired - Lifetime
- 1993-10-14 EP EP93308184A patent/EP0633581B1/en not_active Expired - Lifetime
- 1993-10-14 AT AT93308184T patent/ATE165477T1/en active
- 1993-10-15 TW TW082108554A patent/TW272293B/zh not_active IP Right Cessation
- 1993-10-15 CN CN93115008A patent/CN1076115C/en not_active Expired - Lifetime
- 1993-10-15 KR KR93021615A patent/KR0131060B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100446193B1 (en) * | 2002-05-29 | 2004-08-30 | 주식회사 태평양금속 | Method and Apparatus for manufacturing permanent magnet using electric conductor film |
Also Published As
Publication number | Publication date |
---|---|
EP0633581B1 (en) | 1998-04-22 |
CN1114779A (en) | 1996-01-10 |
ATE165477T1 (en) | 1998-05-15 |
CN1076115C (en) | 2001-12-12 |
TW272293B (en) | 1996-03-11 |
EP0633581A1 (en) | 1995-01-11 |
RU2113742C1 (en) | 1998-06-20 |
DE69318147T2 (en) | 1998-11-12 |
DE69318147D1 (en) | 1998-05-28 |
KR950004295A (en) | 1995-02-17 |
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Payment date: 20121101 Year of fee payment: 16 |
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