JP2006306693A - フェライト焼結体およびその製造方法 - Google Patents
フェライト焼結体およびその製造方法 Download PDFInfo
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Abstract
【解決手段】 六方晶Z型フェライトのフェライト焼結体であって、17〜21mol%のBaO、6〜13mol%のCoO、残部Fe2O3を主成分とし、前記主成分に対してLiをLi2CO3換算で0.05〜1.0質量%、SiをSiO2換算で0.05〜0.5質量%含有することを特徴とし、さらには前記焼結体中のZ型フェライト相とスピネル型フェライト相の全体に対するスピネル型フェライト相の割合が、前記焼結体断面における面積比率で5%以下であることを特徴とする。
【選択図】 図1
Description
Claims (10)
- 六方晶Z型フェライトのフェライト焼結体であって、17〜21mol%のBaO、6〜13mol%のCoO、残部Fe2O3を主成分とし、前記主成分に対してLiをLi2CO3換算で0.05〜1.0質量%、SiをSiO2換算で0.05〜0.5質量%含有するフェライト焼結体。
- 前記フェライト焼結体中のZ型フェライト相とスピネル型フェライト相の全体に対するスピネル型フェライト相の割合が、前記フェライト焼結体断面における面積比率で5%以下であることを特徴とする請求項1に記載のフェライト焼結体。
- 前記主成分が18.2〜19.8mol%のBaO、8〜11.5mol%のCoO、残部Fe2O3であることを特徴とする請求項1または2に記載のフェライト焼結体。
- 焼結体密度が4.95×103kg/m3以上であることを特徴とする請求項1〜3のいずれかに記載のフェライト焼結体。
- 焼結体断面の平均結晶粒径が20μm以上であることを特徴とする請求項1〜4のいずれかに記載のフェライト焼結体。
- 100kHzでの初透磁率μiが14以上であることを特徴とする請求項1〜5のいずれかに記載のフェライト焼結体。
- 前記主成分に対してMnをMn3O4換算で0.05〜5質量%含有することを特徴とする請求項1〜6のいずれかに記載のフェライト焼結体。
- 100kHzでの初透磁率μiが15以上、かつ体積抵抗率ρが104Ω・m以上であることを特徴とする請求項1〜7のいずれかに記載のフェライト焼結体。
- 混合した原料粉を仮焼する仮焼工程と、前記仮焼工程で得られた仮焼粉を粉砕する粉砕工程と、前記粉砕工程で得られた粉砕粉を成形する成形工程と、前記成形工程で得られた成形体を焼成し六方晶Z型フェライトの焼結体を得る焼結工程とを有するフェライト焼結体の製造方法であって、前記フェライト焼結体は、17〜21mol%のBaO、6〜13mol%のCoO、残部Fe2O3を主成分とし、前記主成分に対してLiをLi2CO3換算で0.05〜1.0質量%、SiをSiO2換算で0.05〜0.5質量%含有するとともに、前記仮焼工程を大気中、950〜1150℃の条件で行うフェライト焼結体の製造方法。
- 前記仮焼工程で得られた仮焼粉が実質的に六方晶M型フェライト相および六方晶Y型フェライト相の2相であることを特徴とする請求項9に記載のフェライト焼結体の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005189734A JP4683327B2 (ja) | 2005-03-31 | 2005-06-29 | フェライト焼結体およびその製造方法 |
US11/363,287 US7390425B2 (en) | 2005-03-31 | 2006-02-28 | Ferrite sintered body and method of manufacturing same |
EP06004862A EP1707536A3 (en) | 2005-03-31 | 2006-03-09 | Ferrite sintered body and method of manufacturing same |
CN2006100594842A CN101037326B (zh) | 2005-03-31 | 2006-03-14 | 铁氧体烧结体和其制造方法 |
KR1020060026280A KR101274368B1 (ko) | 2005-03-31 | 2006-03-22 | 페라이트 소결체 및 그 제조 방법 |
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JP2005101898 | 2005-03-31 | ||
JP2005189734A JP4683327B2 (ja) | 2005-03-31 | 2005-06-29 | フェライト焼結体およびその製造方法 |
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JP2006306693A true JP2006306693A (ja) | 2006-11-09 |
JP4683327B2 JP4683327B2 (ja) | 2011-05-18 |
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JP2005189734A Expired - Fee Related JP4683327B2 (ja) | 2005-03-31 | 2005-06-29 | フェライト焼結体およびその製造方法 |
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Country | Link |
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US (1) | US7390425B2 (ja) |
EP (1) | EP1707536A3 (ja) |
JP (1) | JP4683327B2 (ja) |
KR (1) | KR101274368B1 (ja) |
CN (1) | CN101037326B (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007119321A (ja) * | 2005-10-31 | 2007-05-17 | Hitachi Metals Ltd | フェライト焼結体およびその製造方法 |
WO2007111122A1 (ja) * | 2006-03-29 | 2007-10-04 | Hitachi Metals, Ltd. | コイル部品およびその製造方法 |
JP2009073717A (ja) * | 2007-09-25 | 2009-04-09 | Hitachi Metals Ltd | フェライト焼結体およびその製造方法並びに電子部品 |
WO2009044514A1 (ja) * | 2007-10-03 | 2009-04-09 | Hitachi Metals, Ltd. | コイル部品 |
JP2009170704A (ja) * | 2008-01-17 | 2009-07-30 | Hitachi Metals Ltd | フェライト焼結体および磁性体アンテナ |
JP2010109056A (ja) * | 2008-10-29 | 2010-05-13 | Kyocera Corp | 磁性体と誘電体との複合焼結体およびそれを用いたlc複合電子部品 |
JP2012082083A (ja) * | 2010-10-07 | 2012-04-26 | Murata Mfg Co Ltd | 六方晶フェライト材料の製造方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008047854A1 (en) * | 2006-10-19 | 2008-04-24 | Hitachi Metals, Ltd. | Radio wave absorption material and radio wave absorber |
US8237529B2 (en) * | 2007-02-07 | 2012-08-07 | Hitachi Metals, Ltd. | Low-loss ferrite and electronic device formed by such ferrite |
US8524190B2 (en) | 2008-05-30 | 2013-09-03 | Skyworks Solutions, Inc. | Enhanced hexagonal ferrite material and methods of preparation and use thereof |
KR101105595B1 (ko) * | 2008-08-13 | 2012-01-18 | 주식회사 이엠따블유 | 페라이트 제조방법 |
KR101161625B1 (ko) * | 2009-04-06 | 2012-07-04 | 주식회사 이엠따블유 | 와이 타입 페라이트 제조 방법 및 이에 의해 제조된 와이 타입 페라이트 |
KR101310358B1 (ko) * | 2011-07-14 | 2013-09-23 | 김선기 | 소성 페라이트 파우더, 이를 적용한 전자파 흡수체 시트 어셈블리 및 그 제조방법 |
KR102093158B1 (ko) * | 2014-09-23 | 2020-03-25 | 삼성전기주식회사 | 고주파 전자부품용 자성재료 및 이의 제조방법 |
CN106587972A (zh) * | 2016-12-15 | 2017-04-26 | 陕西科技大学 | 一种z‑型铁氧体片状粉体的制备方法 |
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JP2007119321A (ja) * | 2005-10-31 | 2007-05-17 | Hitachi Metals Ltd | フェライト焼結体およびその製造方法 |
WO2007111122A1 (ja) * | 2006-03-29 | 2007-10-04 | Hitachi Metals, Ltd. | コイル部品およびその製造方法 |
JP2009073717A (ja) * | 2007-09-25 | 2009-04-09 | Hitachi Metals Ltd | フェライト焼結体およびその製造方法並びに電子部品 |
WO2009044514A1 (ja) * | 2007-10-03 | 2009-04-09 | Hitachi Metals, Ltd. | コイル部品 |
JP2009170704A (ja) * | 2008-01-17 | 2009-07-30 | Hitachi Metals Ltd | フェライト焼結体および磁性体アンテナ |
JP2010109056A (ja) * | 2008-10-29 | 2010-05-13 | Kyocera Corp | 磁性体と誘電体との複合焼結体およびそれを用いたlc複合電子部品 |
JP2012082083A (ja) * | 2010-10-07 | 2012-04-26 | Murata Mfg Co Ltd | 六方晶フェライト材料の製造方法 |
Also Published As
Publication number | Publication date |
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JP4683327B2 (ja) | 2011-05-18 |
KR20060106686A (ko) | 2006-10-12 |
KR101274368B1 (ko) | 2013-06-13 |
EP1707536A2 (en) | 2006-10-04 |
CN101037326A (zh) | 2007-09-19 |
EP1707536A3 (en) | 2008-07-02 |
US20060219974A1 (en) | 2006-10-05 |
US7390425B2 (en) | 2008-06-24 |
CN101037326B (zh) | 2010-04-21 |
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