JP5837139B2 - R−Fe−B系焼結磁石の調製方法 - Google Patents
R−Fe−B系焼結磁石の調製方法 Download PDFInfo
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- JP5837139B2 JP5837139B2 JP2014107580A JP2014107580A JP5837139B2 JP 5837139 B2 JP5837139 B2 JP 5837139B2 JP 2014107580 A JP2014107580 A JP 2014107580A JP 2014107580 A JP2014107580 A JP 2014107580A JP 5837139 B2 JP5837139 B2 JP 5837139B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- 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
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- 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
- H01F41/0293—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 diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
Description
2:入力端
3:テルビウム又はジスプロシウムワイヤー
4:アルゴンガスコンプレッサー
5:セラミックプレート
6:磁石チップ
7:アルゴンガス制御弁
8:密封箱
9:アルゴンガス入力口
Claims (6)
- 下記の手順を含むことを特徴とするR-Fe-B系焼結磁石の調製方法。
(1)本分野の技術者の公知の方法でR1-Fe-B-M焼結磁石を調製する。その中、R1はNd、Pr、Dy、Tb、Ho、Gdから選出されたいずれか又は複数であり、総量が26wt%〜33wt%であり、MはTi、V、Cr、Mn、Co、Ni、Ga、Ca、Cu、Zn、Si、Al、Mg、Zr、Nb、Hf、Ta、W、Moから選出されたいずれか又は複数、総量が0〜5wt%であり、Bは総量が0.5wt%〜2wt%であり、残ったものはFeである。
(2)ステップ1)で取得した焼結磁石に対して脱脂、酸洗い、活性化及び脱イオン水洗浄処理を行う。
(3)ステップ2)で洗浄された焼結磁石を、溶射ガンの設置された密封箱に設置して、焼結磁石を循環アルゴンガス保護雰囲気に設置して、溶射材料として溶射で焼結磁石の表面に厚さ10〜200μmの金属Tb又は金属Dyを噴き付け、ここで、前記溶射は、溶射ガンを稼働することにより金属Tb又は金属Dyを含有するワイヤーを加熱し溶融させ、圧縮アルゴンガスを該ワイヤーに向けて噴き付けることにより溶融した金属Tb又は金属Dyを液滴化して焼結磁石の表面に噴き付け、焼結磁石の表面に塗装層を形成することによって行われる。
(4)ステップ3)で処理された焼結磁石を真空焼結炉に設置し、750〜1000℃で2〜72hに熱処理を行い真空焼結炉内部の真空度を10-2〜10-5Paに制御し、又は真空焼結炉の内部で5〜20kPaのアルゴンガス保護雰囲気を設置し、金属Tb又は金属Dyが粒界の拡散により焼結磁石の内部に入るようにする。
(5)ステップ4)で処理された焼結磁石を450〜600℃で1〜10hに時効処理を行い、R-Fe-B系の焼結磁石を取得する。 - ステップ3)で、溶射で焼結磁石の表面に厚さ20〜100μmの金属Tb又は金属Dyを噴き付けることを特徴とする請求項1に記載の調製方法。
- ステップ3)で、箱内部の安定な圧力を保つように、密封箱の本体にアルゴンガスの入口及びアルゴンガス制御弁、密封箱の本体の外部にアルゴンガスコンプレッサーを設置することを特徴とする請求項1に記載の調製方法。
- ステップ3)で、溶射まで前記の焼結磁石を密封箱の内部にしっかり設置し、焼結磁石の片面に対して溶射を行ってからあべこべにして、反対面に対して溶射処理を行うことを特徴とする請求項1に記載の調製方法。
- ステップ4)で、金属Tbを溶射材料にする場合、真空焼結炉内部の温度が850〜970℃、熱処理時間が5〜72h、真空焼結炉内部の真空度が10-3〜10-4Paであり、又は真空焼結炉の内部で5〜10kPaのアルゴンガス保護雰囲気を使用する。金属Dyを溶射材料にする場合、真空焼結炉内部の温度が800〜950℃、熱処理時間が5〜72h、真空焼結炉内真空度が10-3〜10-4Paであり、又は真空焼結炉の内部で5〜10kPaのアルゴンガス保護雰囲気を使用することを特徴とする請求項1に記載の調製方法。
- ステップ5)で、前記の時効処理の温度が470〜550℃、処理時間が2〜5hであることを特徴とする請求項1に記載の調製方法。
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CN201310209231.9A CN103258633B (zh) | 2013-05-30 | 2013-05-30 | 一种R-Fe-B系烧结磁体的制备方法 |
CN201310209231.9 | 2013-05-30 |
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JP2014236221A JP2014236221A (ja) | 2014-12-15 |
JP5837139B2 true JP5837139B2 (ja) | 2015-12-24 |
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EP (1) | EP2808877B1 (ja) |
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EP2808877B1 (en) | 2016-02-17 |
US9623482B2 (en) | 2017-04-18 |
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US20140352847A1 (en) | 2014-12-04 |
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