JP2003277814A5 - - Google Patents

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Publication number
JP2003277814A5
JP2003277814A5 JP2003121614A JP2003121614A JP2003277814A5 JP 2003277814 A5 JP2003277814 A5 JP 2003277814A5 JP 2003121614 A JP2003121614 A JP 2003121614A JP 2003121614 A JP2003121614 A JP 2003121614A JP 2003277814 A5 JP2003277814 A5 JP 2003277814A5
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JP
Japan
Prior art keywords
metal oxide
alloy powder
producing
heating
powder according
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JP2003121614A
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JP3985725B2 (ja
JP2003277814A (ja
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Priority to JP2003121614A priority Critical patent/JP3985725B2/ja
Priority claimed from JP2003121614A external-priority patent/JP3985725B2/ja
Publication of JP2003277814A publication Critical patent/JP2003277814A/ja
Publication of JP2003277814A5 publication Critical patent/JP2003277814A5/ja
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Claims (4)

  1. 希土類元素の少なくとも一種の陽イオンと、Fe、Co及びNiの中から選ばれる少なくとも一種の陽イオンとを、これら陽イオンと不溶性の塩を生成する物質にて反応させた沈殿物を析出させる工程、
    該沈殿物を大気よりも酸素リッチな条件で焼成して金属酸化物を得る工程、
    該金属酸化物を還元する工程、
    を含む合金粉末の製造方法。
  2. 前記沈殿物粒子の平均粒径は0.1〜10μmである請求項1記載の合金粉末の製造方法。
  3. 前記金属酸化物の還元は、還元性ガス雰囲気中で金属酸化物を加熱する工程と、その後に、希土類元素よりも還元電位が負にある還元剤を混合して加熱する工程を含む多段階工程よりなる請求項1記載の合金粉末の製造方法。
  4. 前記還元剤による還元反応が終了した後、300〜600℃の範囲の温度で、同じ炉内で引き続き窒素ガス、或いは、加熱により分解して窒素を供給しうる化合物ガスを導入する工程を含む請求項1に記載の合金粉末の製造方法。
JP2003121614A 2003-04-25 2003-04-25 合金粉末の製造方法 Expired - Lifetime JP3985725B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003121614A JP3985725B2 (ja) 2003-04-25 2003-04-25 合金粉末の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003121614A JP3985725B2 (ja) 2003-04-25 2003-04-25 合金粉末の製造方法

Related Parent Applications (1)

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JP35640897A Division JP3698538B2 (ja) 1997-12-25 1997-12-25 合金粉末の製造方法

Publications (3)

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JP2003277814A JP2003277814A (ja) 2003-10-02
JP2003277814A5 true JP2003277814A5 (ja) 2005-08-04
JP3985725B2 JP3985725B2 (ja) 2007-10-03

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Family Applications (1)

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JP2003121614A Expired - Lifetime JP3985725B2 (ja) 2003-04-25 2003-04-25 合金粉末の製造方法

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JP (1) JP3985725B2 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100354990C (zh) * 2005-04-21 2007-12-12 中南大学 稀土-钴永磁材料前驱体的化学均匀共沉淀制备方法

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