JP7365773B2 - 軟磁性材料及びその製造方法並びに軟磁性材料を用いた電動機 - Google Patents
軟磁性材料及びその製造方法並びに軟磁性材料を用いた電動機 Download PDFInfo
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Description
Claims (13)
- 添加されている合金元素の合計量が5質量%以下である板状又は箔状の鉄系材料である軟磁性材料であって、
鉄、炭素及び窒素を含み、
炭素及び窒素を含有するマルテンサイト、及びγ-Feを含み、
前記γ-Feは、0.05質量%以上1.50質量%以下の窒素を含有する面心立方晶を含み、
前記マルテンサイトの体積率は、80体積%以上であり、
前記面心立方晶の体積率は、1体積%以上20体積%以下であり、かつ、前記マルテンサイトの体積率より低く、
前記軟磁性材料の平均炭素濃度が0.45質量%以上1.12質量%以下であり、前記軟磁性材料の平均窒素濃度が0.4質量%以上1.2質量%以下である、軟磁性材料。 - 前記マルテンサイトは、体心立方晶及び体心正方晶を含む、請求項1記載の軟磁性材料。
- さらに、面心立方晶のFe4Nを含む、請求項1に記載の軟磁性材料。
- 添加元素としてバナジウム又はニオブを更に含み、
前記添加元素の濃度は、1質量%未満である、請求項1記載の軟磁性材料。 - 添加されている合金元素の合計量が5質量%以下であり、炭素及び窒素を含有するマルテンサイト、及びγ-Feを含む軟磁性材料であって、前記γ-Feは、0.05質量%以上1.50質量%以下の窒素を含有する面心立方晶を含み、前記マルテンサイトの体積率は、80体積%以上であり、前記面心立方晶の体積率は、1体積%以上20体積%以下であり、かつ、前記マルテンサイトの体積率より低く、前記軟磁性材料の平均炭素濃度が0.45質量%以上1.12質量%以下であり、前記軟磁性材料の平均窒素濃度が0.4質量%以上1.2質量%以下である前記軟磁性材料を製造する方法であって、
板状又は箔状である鉄系材料を加熱し、
浸炭性ガスを用いて前記鉄系材料に浸炭し、
共析温度以下の温度で粒状炭化物を前記鉄系材料のα-Feに分散させ、
前記共析温度より高い温度で前記α-Feを前記γ-Feに変態させ、
窒素供給ガスを用いて前記γ-Feに窒素を拡散させることにより、γ-Fe-N-Cとし、
急速加熱をした後、急速冷却をすることにより、前記γ-Fe-N-Cを前記マルテンサイトに変態させる、軟磁性材料の製造方法。 - 前記鉄系材料の厚さは、0.01mm以上1.00mm以下である、請求項5記載の製造方法。
- 前記鉄系材料は、純鉄又は低炭素低合金鋼である、請求項5記載の製造方法。
- 前記浸炭性ガスは、アセチレンである、請求項5記載の製造方法。
- 前記窒素供給ガスは、アンモニアである、請求項5記載の製造方法。
- 前記急速冷却は、液体窒素を用いて行う、請求項5記載の製造方法。
- 前記鉄系材料は、添加元素としてバナジウム又はニオブを含み、
前記添加元素の濃度は、1質量%未満である、請求項5記載の製造方法。 - コアと、コイルと、回転子と、を備え、
前記コアは、請求項1~4のいずれか一項に記載の軟磁性材料で形成されている、電動機。 - 前記コアは、前記軟磁性材料の積層体である、請求項12記載の電動機。
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JP2019023282A JP7365773B2 (ja) | 2019-02-13 | 2019-02-13 | 軟磁性材料及びその製造方法並びに軟磁性材料を用いた電動機 |
PCT/JP2019/035654 WO2020166115A1 (ja) | 2019-02-13 | 2019-09-11 | 軟磁性材料及びその製造方法並びに軟磁性材料を用いた電動機 |
DE112019006230.1T DE112019006230T5 (de) | 2019-02-13 | 2019-09-11 | Weichmagnetischer werkstoff und verfahren zur herstellung desselben, undweichmagnetischen werkstoff enthaltender elektromotor |
US17/414,357 US20220042157A1 (en) | 2019-02-13 | 2019-09-11 | Soft magnetic material and method for producing the same, and electric motor containing soft magnetic material |
CN201980091441.8A CN113396235B (zh) | 2019-02-13 | 2019-09-11 | 软磁性材料及其制造方法和使用了软磁性材料的电动机 |
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JP7535900B2 (ja) | 2020-09-29 | 2024-08-19 | 株式会社日立製作所 | 軟磁性鉄板、該軟磁性鉄板の製造方法、該軟磁性鉄板を用いた鉄心および回転電機 |
JP2022141180A (ja) | 2021-03-15 | 2022-09-29 | 株式会社日立製作所 | 軟磁性鉄合金板およびその製造方法 |
JP2022168559A (ja) | 2021-04-26 | 2022-11-08 | 株式会社日立製作所 | 軟磁性鉄合金板、該軟磁性鉄合金板の製造方法、該軟磁性鉄合金板を用いた鉄心および回転電機 |
CN115627425A (zh) * | 2022-09-20 | 2023-01-20 | 武汉两仪材料有限公司 | 一种金属材料及其制备和应用 |
Citations (5)
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JP2005002381A (ja) | 2003-06-10 | 2005-01-06 | Aichi Steel Works Ltd | 高強度電磁部品用マルテンサイト系ステンレス鋼 |
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