JP6589611B2 - 磁性シート - Google Patents
磁性シート Download PDFInfo
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- JP6589611B2 JP6589611B2 JP2015239371A JP2015239371A JP6589611B2 JP 6589611 B2 JP6589611 B2 JP 6589611B2 JP 2015239371 A JP2015239371 A JP 2015239371A JP 2015239371 A JP2015239371 A JP 2015239371A JP 6589611 B2 JP6589611 B2 JP 6589611B2
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- Prior art keywords
- magnetic
- magnetic particles
- oxygen
- oxygen film
- sheet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
-
- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/33—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 soft-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Description
扁平状磁性体粒子を含む磁性シートであって、
前記扁平状磁性体粒子が、Fe−Si−Cr系合金からなり、
前記扁平状磁性体粒子の表面には、酸素膜が存在し、
前記酸素膜の厚みを、オージェ電子分光で酸素強度が最表面から半減するまでの距離と定義する場合に、前記酸素膜の平均厚みが3.5〜6.0nmであることを特徴とする。
水アトマイズ法により合金粒子を作製し、次いで、媒体撹拌ミルにより合金粒子を扁平化し、さらに熱処理を施して、扁平状磁性体粒子からなる軟磁性粉末を得た。
扁平状磁性体粒子の組成をFea1Sib1Crc1Xd1と表した場合に、a1=72、b1=28、c1=d1=0とした点を除いて実験例1と同様にして各実施例および比較例を作成して特性を評価した。結果を表2、図7および図8に示す。
4… (扁平状)磁性体粒子
6… 合成樹脂
8… 酸素膜
Claims (1)
- 扁平状磁性体粒子を含む磁性シートであって、
前記扁平状磁性体粒子が、Fe−Si−Cr系合金からなり、
前記扁平状磁性体粒子の表面には、酸素膜が存在し、
前記酸素膜の厚みをオージェ電子分光で酸素強度が最表面から半減するまでの距離と定義する場合に、前記酸素膜の平均厚みが3.5〜6.0nmであることを特徴とする磁性シート。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015239371A JP6589611B2 (ja) | 2015-12-08 | 2015-12-08 | 磁性シート |
CN201611122763.9A CN107025972B (zh) | 2015-12-08 | 2016-12-08 | 磁性片材 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015239371A JP6589611B2 (ja) | 2015-12-08 | 2015-12-08 | 磁性シート |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017107936A JP2017107936A (ja) | 2017-06-15 |
JP6589611B2 true JP6589611B2 (ja) | 2019-10-16 |
Family
ID=59060116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015239371A Active JP6589611B2 (ja) | 2015-12-08 | 2015-12-08 | 磁性シート |
Country Status (2)
Country | Link |
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JP (1) | JP6589611B2 (ja) |
CN (1) | CN107025972B (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7456363B2 (ja) * | 2020-12-09 | 2024-03-27 | Tdk株式会社 | 積層コイル部品 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2523388B2 (ja) * | 1990-04-12 | 1996-08-07 | ティーディーケイ株式会社 | 磁気シ―ルド用軟磁性粉末の製造方法および磁気シ―ルド材 |
JP4548035B2 (ja) * | 2004-08-05 | 2010-09-22 | 株式会社デンソー | 軟磁性材の製造方法 |
JP2007273732A (ja) * | 2006-03-31 | 2007-10-18 | Tdk Corp | ノイズ抑制用軟磁性金属粉末及びノイズ抑制シート |
EP2182530A4 (en) * | 2007-08-30 | 2011-08-24 | Sumitomo Electric Industries | SOFT MAGNETIC MATERIAL, IRON POWDER CORE, PROCESS FOR MANUFACTURING SOFT MAGNETIC MATERIAL, AND PROCESS FOR MANUFACTURING IRON POWDER CORE |
JP2009164402A (ja) * | 2008-01-08 | 2009-07-23 | Fuji Electric Device Technology Co Ltd | 圧粉磁心の製造方法 |
JP5455258B2 (ja) * | 2012-02-21 | 2014-03-26 | Necトーキン株式会社 | ノイズ抑制シート |
CN104756203B (zh) * | 2012-10-31 | 2017-10-20 | 松下知识产权经营株式会社 | 复合磁性体及其制造方法 |
-
2015
- 2015-12-08 JP JP2015239371A patent/JP6589611B2/ja active Active
-
2016
- 2016-12-08 CN CN201611122763.9A patent/CN107025972B/zh active Active
Also Published As
Publication number | Publication date |
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CN107025972B (zh) | 2019-08-16 |
JP2017107936A (ja) | 2017-06-15 |
CN107025972A (zh) | 2017-08-08 |
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