JP2016502260A - Hddr工法のうち、水素放出及び再結合段階制御方法と、水素放出及び再結合段階を含む希土類−鉄−ボロン系希土類磁性粉末の製造方法及びこれにより製造された希土類−鉄−ボロン系希土類磁性粉末 - Google Patents
Hddr工法のうち、水素放出及び再結合段階制御方法と、水素放出及び再結合段階を含む希土類−鉄−ボロン系希土類磁性粉末の製造方法及びこれにより製造された希土類−鉄−ボロン系希土類磁性粉末 Download PDFInfo
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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
- H01F1/0573—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
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
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- 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
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Abstract
Description
<反応式1>
R2Fe14BHX+RHX+H2→α−Fe+Fe2B+RHX
<反応式2>
α−Fe+Fe2B+RHX→R2Fe14B+R−Rich+H2
R−Fe−B系希土類磁性粉末の製造1
R−Fe−B系希土類磁性粉末の製造2
前記水素放出及び再結合段階(S700)で一定圧力で5分間維持して遂行したことを除いて前記実施例1と同一にR−Fe−B系希土類磁性粉末を製造した。
R−Fe−B系希土類磁性粉末の製造3
前記水素放出及び再結合段階(S700)で一定圧力で維持時間なく遂行したことを除いて前記実施例1と同一にR−Fe−B系希土類磁性粉末を製造した。
S300:脱水素段階 S400:アルゴン充填段階
S500:第2加熱段階 S600:相分解段階
S700:水素放出及び再結合段階 S800:冷却段階
Claims (10)
- HDDR(水素化/Hydrogenation−相分解/Disproportionation−水素放出/Desorption−再結合/Recombination)工法で水素放出及び再結合段階中に吸熱反応時間が3分を超えるように水素放出速度を制御することを特徴とするHDDR工法中の水素放出及び再結合段階制御方法。
- 前記水素放出及び再結合段階は水素放出速度を遅くして結晶粒サイズを減少させる過程であることを特徴とする請求項1に記載のHDDR工法中の水素放出及び再結合段階制御方法。
- 前記水素放出及び再結合段階は、15分以上実施することを特徴とする請求項2に記載のHDDR工法中の水素放出及び再結合段階制御方法。
- R−Fe−B系希土類磁性粉末をチューブ炉(tube furnace)に装入した後に加熱する第1加熱段階と、
前記チューブ炉(tube furnace)に水素を満たしてチューブへの温度を一定に維持させる水素化段階と、
前記チューブ炉内部の水素を排気する脱水素段階と、
前記チューブ炉内部にアルゴンガスを充填するアルゴン充填段階と、
アルゴンガスが充填されたチューブ炉を加熱する第2加熱段階と、
前記チューブ炉内部に水素を満たした後に一定温度を維持して相分解する相分解段階と、
前記チューブ炉内の水素を放出して吸熱反応が3分を超えるように制御し、15分以上実施してR−Fe−B系希土類磁性粉末を製造する水素放出及び再結合段階と、
前記R−Fe−B系希土類磁性粉末を冷却する冷却段階からなることを特徴とする水素放出及び再結合段階を含むR−Fe−B系希土類磁性粉末の製造方法。 - 前記水素放出及び再結合段階は水素放出速度を遅らせて結晶粒サイズを減少させる過程であることを特徴とする請求項4に記載の水素放出及び再結合段階を含むR−Fe−B系希土類磁性粉末の製造方法。
- 前記第1加熱段階はアルゴン雰囲気で100〜400℃まで昇温する過程であることを特徴とする請求項5に記載の水素放出及び再結合段階を含むR−Fe−B系希土類磁性粉末の製造方法。
- 前記第2加熱段階は700〜900℃まで昇温することを特徴とする請求項6に記載の水素放出及び再結合段階を含むR−Fe−B系希土類磁性粉末の製造方法。
- 前記冷却段階でR−Fe−B系希土類磁性粉末は急冷処理されることを特徴とする請求項7に記載の水素放出及び再結合段階を含むR−Fe−B系希土類磁性粉末の製造方法。
- 請求項4乃至請求項8のいずれか一項に記載の製造方法によって製造されるR−Fe−B系希土類磁性粉末。
- 前記希土類磁性粉末の結晶粒サイズは200ないし300nmであることを特徴とする請求項9に記載の自己特性が向上したR−Fe−B系希土類磁性粉末。
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KR1020120112314A KR101269408B1 (ko) | 2012-10-10 | 2012-10-10 | 수소방출및재결합단계를 포함하는 희토류-철-보론계 희토류자성분말의 제조방법 |
PCT/KR2013/009006 WO2014058218A1 (ko) | 2012-10-10 | 2013-10-08 | 에이치디디알공법 중 수소방출및재결합단계 제어방법과, 수소방출및재결합단계를 포함하는 희토류-철-보론계 희토류자성분말의 제조방법 및 이에 따라 제조된 희토류-철-보론계 희토류자성분말 |
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CN105115187B (zh) * | 2015-09-18 | 2017-05-10 | 天津阜昭合金材料有限公司 | 一种用于永磁体粉末的一体式加热制冷装置 |
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JP2000336405A (ja) * | 1999-05-26 | 2000-12-05 | Sumitomo Special Metals Co Ltd | 永久磁石用希土類系合金粉末の製造方法 |
JP2011049440A (ja) * | 2009-08-28 | 2011-03-10 | Hitachi Metals Ltd | R−t−b系永久磁石の製造方法 |
JP2011122227A (ja) * | 2009-12-14 | 2011-06-23 | Toyota Motor Corp | 希土類磁石粉末の処理方法 |
JP2011222966A (ja) * | 2010-03-24 | 2011-11-04 | Tdk Corp | 希土類磁石用合金及び希土類磁石用合金の製造方法 |
WO2012002774A2 (ko) * | 2010-07-02 | 2012-01-05 | 한국기계연구원 | 본드자석용 R-Fe-B계 희토류 자성분말의 제조방법, 이에 의해 제조된 자성분말 및 상기 자성분말을 이용한 본드자석의 제조방법, 이에 의해 제조된 본드자석 |
JP2012099520A (ja) * | 2010-10-29 | 2012-05-24 | Tdk Corp | R−t−b系磁性粉末の製造方法 |
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JP2000336405A (ja) * | 1999-05-26 | 2000-12-05 | Sumitomo Special Metals Co Ltd | 永久磁石用希土類系合金粉末の製造方法 |
JP2011049440A (ja) * | 2009-08-28 | 2011-03-10 | Hitachi Metals Ltd | R−t−b系永久磁石の製造方法 |
JP2011122227A (ja) * | 2009-12-14 | 2011-06-23 | Toyota Motor Corp | 希土類磁石粉末の処理方法 |
JP2011222966A (ja) * | 2010-03-24 | 2011-11-04 | Tdk Corp | 希土類磁石用合金及び希土類磁石用合金の製造方法 |
WO2012002774A2 (ko) * | 2010-07-02 | 2012-01-05 | 한국기계연구원 | 본드자석용 R-Fe-B계 희토류 자성분말의 제조방법, 이에 의해 제조된 자성분말 및 상기 자성분말을 이용한 본드자석의 제조방법, 이에 의해 제조된 본드자석 |
JP2012099520A (ja) * | 2010-10-29 | 2012-05-24 | Tdk Corp | R−t−b系磁性粉末の製造方法 |
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