JP2019521506A - 希土類磁石の製造方法 - Google Patents
希土類磁石の製造方法 Download PDFInfo
- Publication number
- JP2019521506A JP2019521506A JP2018557895A JP2018557895A JP2019521506A JP 2019521506 A JP2019521506 A JP 2019521506A JP 2018557895 A JP2018557895 A JP 2018557895A JP 2018557895 A JP2018557895 A JP 2018557895A JP 2019521506 A JP2019521506 A JP 2019521506A
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- axis
- earth magnet
- compression
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- 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
-
- 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
- H01F1/06—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 in the form of particles, e.g. powder
- H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- 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
- B22F3/087—Compacting only using high energy impulses, e.g. magnetic field impulses
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
- C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
-
- 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
- H01F1/0576—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 pressed, e.g. hot working
-
- 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
- H01F1/06—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 in the form of particles, e.g. powder
- H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/086—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 in the form of particles, e.g. powder pressed, sintered, or bound together sintered
-
- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15325—Amorphous metallic alloys, e.g. glassy metals containing rare earths
-
- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
-
- 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
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/35—Iron
- B22F2301/355—Rare Earth - Fe intermetallic alloys
-
- 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)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Electromagnetism (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
しかし、従来には、図1に示すように、磁場圧縮成形時に1軸成形を行なって成形体内の粉末分布が不均等な問題点があった。
また、X軸方向の結晶粒間の平均距離は、Y軸方向の結晶粒間の平均距離対比0.95〜1.05倍の範囲内である希土類磁石を提供する。
以下、各ステップを詳細に説明する。
R、Fe、Bを組成成分として含む希土類磁石原料粉末において、RはY及びScを含む希土類元素から選択される1種または2種以上が選択されることができ、組成成分として選択的に金属Mが1種または2種以上が選択されることができる。Mの具体的な例としては、Al、Ga、Cu、Ti、W、Pt、Au、Cr、Ni、Co、Ta、Agなどを挙げることができる。前記希土類磁石原料粉末は限定されることはないが、Nb−Fe−B系焼結磁石粉末を用いることができる。
前記原料粉末を成形用金型に充填する。成形用金型の形状は限定されず、一例として六面体であっても良い。充填密度は制限されないが、1.0g/cc〜3.0g/ccの範囲内に充填することが、後述する実施例に示すように優れており、より好ましくは1.5g/cc〜2.5g/ccの範囲内に充填するのが良い。充填密度が上記した範囲を外れる場合、粉末の磁場配向特性が相対的に悪くなることがある。(3)磁場圧縮成形するステップ
このような方法で製造された希土類磁石は、X軸方向の結晶粒間の平均距離は、Y軸方向の結晶粒間の平均距離対比0.90〜1.10倍の範囲内、特に0.95〜1.05倍の範囲内に非常に均一に結晶粒が分布して磁石特性が大幅に向上される。
以下、実施例を参照して、より詳細に説明する。
32 wt%RE−66wt%Fe−1wt%TM−1wt%B(ここで、RE=希土類元素、TM=3d遷移金属)組成の合金を真空誘導加熱方式で溶解し、ストリップキャスト方法を用いて合金インゴットに製造した。
製造された合金インゴットの粉砕能を向上させるために、水素雰囲気及び常温で水素を吸収させ、続いて真空600℃で水素を除去する処理を施した後、ジェトミル技術を利用した粉砕方式により3.5μm粒度の均一で微細な粉末に製造した。このとき、合金インゴットから微粉末に製造する工程は、酸素が汚染されて磁気特性が低下することを防止するために、窒素或いは不活性ガス雰囲気で行なった。
<表1>
前記実施例1で粉末充填密度を異にしたことを除いては、同様に実施し、その結果を表2に示した。粉末充填密度が特異なことに、磁場配向特性に重要な影響を及ぼすを発見し、1.5g/cc〜2.5g/ccの範囲内が最も優れており、表には示してはいないが1.0g/cc未満、3.0g/ccを超える場合、残留磁束密度は大幅に低下した。
<表2>
前記実施例1で粉末成形密度を異にしたことを除いては、同様に実施し、その結果を表3に示した。粉末成形密度は3.5g/cc〜4.5g/ccの範囲内で優れた磁場配向特性を示した。
<表3>
以上で、本発明の内容の特定な部分を詳細に記述してきたが、当業界における通常の知識を有する者にとって、このような具体的な技術は、単に好ましい実施例に過ぎず、これにより本発明の範囲が制限されるものではない点は明らかである。したがって、本発明の実質的な範囲は、添付された請求項とそれらの等価物により定義されるということができる。
Claims (9)
- R、Fe、Bを組成成分として含む希土類磁石原料粉末を準備するステップ(RはY及びScを含む希土類元素から選択される1種または2種以上が選択される)と、前記原料粉末を成形用金型に充填するステップと、磁場を形成しながら圧縮成形するステップと、を含んで成り、
前記圧縮成形するステップは、磁場の方向をZ軸とするとき、X軸とY軸の2軸方向に圧縮する希土類磁石の製造方法。 - 前記圧縮成形するステップは、X軸圧縮とY軸圧縮をそれぞれ1回順次に行なう請求項1に記載の希土類磁石の製造方法。
- 前記圧縮成形するステップは、X軸圧縮とY軸圧縮を順次に2回〜10回繰り返す請求項1に記載の希土類磁石の製造方法。
- 前記成形後の粉末成形密度は3.5g/cc〜4.5g/ccの範囲内である請求項1に記載の希土類磁石の製造方法。
- 前記X軸圧縮とY軸圧縮の圧縮比の差が10%以下である請求項1に記載の希土類磁石の製造方法。
- 前記充填するステップは、1.0g/cc〜3.0g/ccの範囲内の充填密度に充填する請求項1に記載の希土類磁石の製造方法。
- 前記X軸方向の結晶粒間の平均距離は、前記Y軸方向の結晶粒間の平均距離対比0.90〜1.10倍の範囲内である請求項1に記載の希土類磁石の製造方法。
- R、Fe、Bを組成成分として含む希土類磁石原料粉末を磁場圧縮成形して製造される希土類磁石であって、
磁場の方向をZ軸とするとき、X軸方向の結晶粒間の平均距離は、Y軸方向の結晶粒間の平均距離対比0.90〜1.10倍の範囲内である希土類磁石。 - X軸方向の結晶粒間の平均距離は、Y軸方向の結晶粒間の平均距離対比0.95〜1.05倍の範囲内である請求項8に記載の希土類磁石。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20160066570 | 2016-05-30 | ||
KR10-2016-0066570 | 2016-05-30 | ||
PCT/KR2016/006176 WO2017209332A1 (ko) | 2016-05-30 | 2016-06-10 | 희토류 자석의 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019521506A true JP2019521506A (ja) | 2019-07-25 |
JP6735990B2 JP6735990B2 (ja) | 2020-08-05 |
Family
ID=60164118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018557895A Active JP6735990B2 (ja) | 2016-05-30 | 2016-06-10 | 希土類磁石の製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US11222738B2 (ja) |
JP (1) | JP6735990B2 (ja) |
KR (1) | KR101733172B1 (ja) |
WO (1) | WO2017209332A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230076263A (ko) | 2021-11-24 | 2023-05-31 | 성림첨단산업(주) | 희토류 영구자석의 제조방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6178105A (ja) * | 1984-09-25 | 1986-04-21 | Matsushita Electric Works Ltd | 永久磁石の製法 |
JP2005259977A (ja) * | 2004-03-11 | 2005-09-22 | Neomax Co Ltd | 希土類磁石の製造方法 |
JP2014057075A (ja) * | 2009-12-09 | 2014-03-27 | Aichi Steel Works Ltd | 希土類異方性磁石とその製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3209291B2 (ja) | 1992-11-30 | 2001-09-17 | 旭化成株式会社 | 磁性材料とその製造方法 |
JP3374672B2 (ja) | 1996-09-30 | 2003-02-10 | 株式会社デンソー | オーステナイト系ステンレス鋼の加工誘起変態方法及び磁性部材の製造方法 |
EP0803582B1 (en) * | 1996-04-26 | 2002-06-19 | Denso Corporation | Method of stress inducing transformation of austenite stainless steel and method of producing composite magnetic members |
JP2003073786A (ja) | 2001-08-28 | 2003-03-12 | Bridgestone Corp | 微細結晶化希土類磁性合金及び希土類ボンド磁石 |
JP2006108591A (ja) * | 2004-10-08 | 2006-04-20 | Tdk Corp | 希土類焼結磁石及びその製造方法 |
KR100642218B1 (ko) | 2005-02-23 | 2006-11-03 | (주)대한특수금속 | 희토류계 자석 제조용 자장 프레스 장치 |
CN101707107B (zh) * | 2009-11-23 | 2012-05-23 | 烟台首钢磁性材料股份有限公司 | 一种高剩磁高矫顽力稀土永磁材料的制造方法 |
JP5218869B2 (ja) * | 2011-05-24 | 2013-06-26 | 住友電気工業株式会社 | 希土類−鉄−窒素系合金材、希土類−鉄−窒素系合金材の製造方法、希土類−鉄系合金材、及び希土類−鉄系合金材の製造方法 |
JP2014103251A (ja) | 2012-11-20 | 2014-06-05 | Toyota Motor Corp | 希土類磁石の製造方法 |
KR101585479B1 (ko) | 2015-04-20 | 2016-01-15 | 엘지전자 주식회사 | MnBi를 포함한 이방성 복합 소결 자석 및 이의 상압소결 방법 |
-
2016
- 2016-06-10 JP JP2018557895A patent/JP6735990B2/ja active Active
- 2016-06-10 WO PCT/KR2016/006176 patent/WO2017209332A1/ko active Application Filing
- 2016-06-10 US US16/099,461 patent/US11222738B2/en active Active
- 2016-06-10 KR KR1020160072376A patent/KR101733172B1/ko active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6178105A (ja) * | 1984-09-25 | 1986-04-21 | Matsushita Electric Works Ltd | 永久磁石の製法 |
JP2005259977A (ja) * | 2004-03-11 | 2005-09-22 | Neomax Co Ltd | 希土類磁石の製造方法 |
JP2014057075A (ja) * | 2009-12-09 | 2014-03-27 | Aichi Steel Works Ltd | 希土類異方性磁石とその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US11222738B2 (en) | 2022-01-11 |
US20190198209A1 (en) | 2019-06-27 |
KR101733172B1 (ko) | 2017-05-08 |
JP6735990B2 (ja) | 2020-08-05 |
WO2017209332A1 (ko) | 2017-12-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7938915B2 (en) | Rare earth alloy binderless magnet and method for manufacture thereof | |
CN100365745C (zh) | 稀土铁系双相纳米晶复合永磁材料的制备方法 | |
CN103839640B (zh) | 永磁体、以及使用该永磁体的电动机和发电机 | |
JP2016115923A (ja) | 磁気特性が向上したMnBiを含む異方性複合焼結磁石及びその製造方法 | |
CN104488048B (zh) | NdFeB系烧结磁体的制造方法 | |
CN1794385A (zh) | 辐射取向整体永磁环的制备方法 | |
TW201312603A (zh) | 磁鐵用壓粉成形體之製造方法、磁鐵用壓粉成形體、及燒結體 | |
JP6613730B2 (ja) | 希土類磁石の製造方法 | |
JP6274068B2 (ja) | 希土類磁石の製造方法 | |
CN103000324A (zh) | 一种烧结稀土永磁材料及其制备方法 | |
US20150171717A1 (en) | Net shaped aligned and sintered magnets by modified mim processing | |
KR101632562B1 (ko) | 이종금속이 확산된 R-Fe-B계 희토류 자성분말의 제조 방법 | |
KR101804313B1 (ko) | 희토류영구자석의 제조방법 | |
JP2019519941A (ja) | 希土類焼結磁石の製造方法 | |
US20100321139A1 (en) | Permanent magnet and method of producing permanent magnet | |
JP6735990B2 (ja) | 希土類磁石の製造方法 | |
KR102045394B1 (ko) | 희토류 영구자석의 제조방법 | |
JP6691667B2 (ja) | R−t−b系磁石の製造方法 | |
CN106971803A (zh) | 一种全致密各向异性NdFeB/MnBi混合永磁的制备方法 | |
KR102045406B1 (ko) | 희토류 영구자석의 제조방법 | |
KR102399418B1 (ko) | 소결 자석 제조 방법 및 이에 따라 제조된 소결 자석 | |
KR101269408B1 (ko) | 수소방출및재결합단계를 포함하는 희토류-철-보론계 희토류자성분말의 제조방법 | |
JP2002075715A (ja) | 異方性バルク交換スプリング磁石およびその製造方法 | |
KR102059533B1 (ko) | 희토류 영구자석의 제조방법 | |
JP2007123467A (ja) | 異方性磁石の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20181101 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190404 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190607 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190726 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20191025 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20191224 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200109 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200522 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200616 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6735990 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |