WO2022186222A1 - 磁性材料、圧粉磁心、インダクタおよび圧粉磁心の製造方法 - Google Patents
磁性材料、圧粉磁心、インダクタおよび圧粉磁心の製造方法 Download PDFInfo
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- 239000000696 magnetic material Substances 0.000 title claims abstract description 68
- 239000000428 dust Substances 0.000 title claims description 57
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000006247 magnetic powder Substances 0.000 claims abstract description 76
- 239000002184 metal Substances 0.000 claims abstract description 73
- 229910052751 metal Inorganic materials 0.000 claims abstract description 73
- 229910002796 Si–Al Inorganic materials 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims description 41
- 239000002245 particle Substances 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 239000011162 core material Substances 0.000 description 92
- 230000035699 permeability Effects 0.000 description 61
- 238000010586 diagram Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 18
- 239000000203 mixture Substances 0.000 description 17
- 239000011347 resin Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 13
- 239000003960 organic solvent Substances 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- H01F1/147—Alloys characterised by their composition
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- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
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Abstract
Description
[磁性材料およびインダクタの構成]
実施の形態に係る磁性材料およびインダクタの構成について、図1~図3を参照しながら説明する。
(a)7.2重量%≦A≦8.1重量%、
(b)6.0重量%≦B≦7.5重量%、
(c)2A+B≦22.7重量%、
という関係を有し、残りの重量%をFeで占めている。なお、金属磁性粉末12は、Fe、Si、Al以外に不可避な不純物を含んでいてもよい。
上記にて示した磁性材料、圧粉磁心およびインダクタの製造方法について説明する。
上記にて示した金属磁性粉末12の組成比について、図5~図9を参照しながら説明する。
次に、実施の形態のさらに望ましい例について説明する。
図10は、圧粉磁心に含まれるFe-Si-Al系金属磁性粉末12の酸素含有量と初比透磁率との関係を示す図である。
図11は、磁性材料に含まれるFe-Si-Al系金属磁性粉末12の粒度分布と初比透磁率との関係を示す図である。図11の(a)には、金属磁性粉末12の粒度分布を変えた場合の試料No.21~No.31が示されている。図11の(b)には、粒度分布および初比透磁率の関係がグラフで示されている。図11の(b)の図中の番号は、試料No.である。
図12は、圧粉磁心11におけるFe-Si-Al系金属磁性粉末12の充填率と比透磁率との関係を示す図である。なおこの例では、金属磁性粉末12の組成比を、Fe-7.6重量%Si-6.6重量%Alとした。
図13は、圧粉磁心11を熱処理する際の熱処理温度を示す図である。
本実施の形態に係る磁性材料は、Fe-Si-Al系金属磁性粉末12を含む磁性材料であって、Fe-Si-Al系金属磁性粉末12は、Si含有量をA重量%とし、Al含有量をB重量%としたときに、7.2重量%≦A≦8.1重量%、6.0重量%≦B≦7.5重量%、および、2A+B≦22.7重量%の関係を有する。
以上、本開示の実施の形態に係る磁性材料等について説明したが、本開示は、この実施の形態に限定されるものではない。
10 磁性コア
11 圧粉磁心
12 金属磁性粉末
13 絶縁材
20 コイル部
21 コイル導体
22 コイル支持体
Claims (7)
- Fe-Si-Al系金属磁性粉末を含む磁性材料であって、
前記Fe-Si-Al系金属磁性粉末は、
Si含有量をA重量%とし、Al含有量をB重量%としたときに、
7.2重量%≦A≦8.1重量%、6.0重量%≦B≦7.5重量%、および、2A+B≦22.7重量%の関係を有する
磁性材料。 - 前記Fe-Si-Al系金属磁性粉末の酸素含有量は、500ppm以下である
請求項1に記載の磁性材料。 - 前記Fe-Si-Al系金属磁性粉末の粒度分布は、(D90-D10)/D50≧1.0である
請求項1に記載の磁性材料。 - 請求項1~3のいずれか1項に記載の磁性材料を含む圧粉磁心。
- 前記圧粉磁心における前記Fe-Si-Al系金属磁性粉末の充填率は、81%以上85%以下である
請求項4に記載の圧粉磁心。 - 請求項4または5に記載の圧粉磁心によって構成される磁性コアと、
前記磁性コアの内部に、少なくとも一部が設けられているコイル部と、
を備えるインダクタ。 - 請求項4または5に記載の圧粉磁心を製造する方法であって、
請求項1~3のいずれか1項に記載の磁性材料を加圧成形することで前記圧粉磁心を成形する工程と、
成形後の前記圧粉磁心を650℃以上800℃以下で熱処理する工程と、
を含む圧粉磁心の製造方法。
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CN202280015083.4A CN116848598A (zh) | 2021-03-05 | 2022-03-01 | 磁性材料、压粉磁芯、电感器和压粉磁芯的制造方法 |
JP2023503878A JPWO2022186222A1 (ja) | 2021-03-05 | 2022-03-01 | |
US18/547,299 US20240127998A1 (en) | 2021-03-05 | 2022-03-01 | Magnetic material, powder magnetic core, inductor, and method of manufacturing powder magnetic core |
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WO2013140762A1 (ja) * | 2012-03-22 | 2013-09-26 | パナソニック株式会社 | 複合磁性材料とその製造方法 |
WO2015079856A1 (ja) * | 2013-11-26 | 2015-06-04 | 住友電気工業株式会社 | 圧粉磁心、コイル部品、及び圧粉磁心の製造方法 |
WO2015137303A1 (ja) * | 2014-03-10 | 2015-09-17 | 日立金属株式会社 | 磁心、コイル部品および磁心の製造方法 |
WO2020040250A1 (ja) * | 2018-08-23 | 2020-02-27 | 日立金属株式会社 | 磁心用の粉末、それを用いた磁心及びコイル部品、並びに磁心用の粉末の製造方法 |
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