JP2010132539A - フェライト粉末及びその製造方法 - Google Patents
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Abstract
【解決手段】フェライト焼結体を作製するにあたり、メディアン径D50[μm]が、0.1μm以上、0.8μm以下であり、スピネル合成度が、45%以上、90%以下、であり、最大磁場15kOeを印加したときの単位質量あたりの残留磁化Br[emu/g]が、次式、0.05≦Br≦2.0lnD50+6.3を満たすフェライト粉末を使用する。
【選択図】なし
Description
Claims (7)
- メディアン径D50[μm]が、0.1μm以上、0.8μm以下であり、
スピネル合成度が、45%以上、90%以下、であり、
最大磁場15kOeを印加したときの単位質量あたりの残留磁化Br[emu/g]が、次式、
0.05≦Br≦2.0lnD50+6.3
を満たすフェライト粉末。 - 前記スピネル合成度が、60%以上、85%以下である請求項1に記載のフェライト粉末。
- 前記残留磁化Br[emu/g]が、次式、
0.50≦Br≦1.7lnD50+4.2
を満たす請求項1又は2に記載のフェライト粉末。 - Fe2O3と、Ni酸化物、Zn酸化物、Cu酸化物のうち何れか1以上の金属酸化物と、を主原料とした粉末を、フェライト単相となる温度より30〜200℃低い温度で仮焼し、仮焼粉末を得て、その仮焼粉末を更に粉砕して、請求項1〜3の何れか一項に記載のフェライト粉末を得るフェライト粉末の製造方法。
- 前記仮焼する温度が、フェライト単相となる温度より50〜130℃低い温度である請求項4に記載のフェライト粉末の製造方法。
- 型の中に、螺旋状の導体を配設するとともに、請求項4又は5に記載のフェライト粉末の製造方法によって、請求項1〜3の何れか一項に記載のフェライト粉末を得た後、そのフェライト粉末を用い調製してフェライトスラリーを得て、
そのフェライトスラリーを前記型の中へ注入し、前記導体の周囲で固化させて成形体を得た後、
その成形体を850〜1100℃で焼成してインダクタを得るインダクタの製造方法。 - 型の中に、導体を配設するとともに、請求項5又は6に記載のフェライト粉末の製造方法によって、請求項1〜3の何れか一項に記載のフェライト粉末を得た後、そのフェライト粉末を用い調製してフェライトスラリーを得て、
そのフェライトスラリーを前記型の中へ注入し、前記導体の周囲で固化させて、複数の1次成形体を得た後、
それら複数の1次成形体を積層し、前記導体が螺旋状に埋設された積層成形体を得て、 その積層成形体を850〜1100℃で焼成してインダクタを得るインダクタの製造方法。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011213577A (ja) * | 2010-03-18 | 2011-10-27 | Ngk Insulators Ltd | Ni−Cu−Zn系セラミック焼結体を製造するために使用される粉末およびその製造方法 |
WO2011155353A1 (ja) | 2010-06-10 | 2011-12-15 | 東ソー株式会社 | ヒドロシラン誘導体、その製造方法、及びケイ素含有薄膜の製造法 |
CN104526940A (zh) * | 2014-11-28 | 2015-04-22 | 许昌永新电气股份有限公司 | 户外互感器的成型模具及其浇注固封方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8034402B2 (en) * | 2007-07-27 | 2011-10-11 | Ngk Insulators, Ltd. | Method for producing ceramic compact and ceramic part |
CN106298181A (zh) * | 2016-08-17 | 2017-01-04 | 三积瑞科技(苏州)有限公司 | 一种制备模压电感的方法 |
CN108500836B (zh) * | 2018-06-04 | 2024-04-12 | 江苏汤普斯伦新材料科技有限公司 | 一种采用矿物铸件的导轨磨床基础构件及制备方法 |
CN112125656A (zh) * | 2020-08-24 | 2020-12-25 | 天津大学 | 低温固化的高频低损耗NiCuZn铁氧体磁芯材料及无压注凝成型方法 |
Citations (6)
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JPH11121234A (ja) * | 1997-10-14 | 1999-04-30 | Murata Mfg Co Ltd | インダクタの製造方法及びインダクタ |
JPH11126724A (ja) * | 1997-10-23 | 1999-05-11 | Murata Mfg Co Ltd | セラミックインダクタ |
JPH11345731A (ja) * | 1998-06-02 | 1999-12-14 | Murata Mfg Co Ltd | インダクタの製造方法 |
JP2000109325A (ja) * | 1998-10-01 | 2000-04-18 | Murata Mfg Co Ltd | Ni−Cu−Znフェライト材料の製造方法 |
JP2000109324A (ja) * | 1998-10-01 | 2000-04-18 | Murata Mfg Co Ltd | Ni−Cu−Znフェライト材料の製造方法 |
JP2001106529A (ja) * | 1999-07-19 | 2001-04-17 | Mitsui Mining & Smelting Co Ltd | 酸化鉄粒子及びその製造方法 |
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US6187218B1 (en) * | 1908-10-19 | 2001-02-13 | Murata Manufacturing Co., Ltd. | Method of producing Ni-Cu-Zn ferrite material |
TW527612B (en) | 2000-12-25 | 2003-04-11 | Tdk Corp | Low-temperature burnt ferrite material and ferrite parts using the same |
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JPH11121234A (ja) * | 1997-10-14 | 1999-04-30 | Murata Mfg Co Ltd | インダクタの製造方法及びインダクタ |
JPH11126724A (ja) * | 1997-10-23 | 1999-05-11 | Murata Mfg Co Ltd | セラミックインダクタ |
JPH11345731A (ja) * | 1998-06-02 | 1999-12-14 | Murata Mfg Co Ltd | インダクタの製造方法 |
JP2000109325A (ja) * | 1998-10-01 | 2000-04-18 | Murata Mfg Co Ltd | Ni−Cu−Znフェライト材料の製造方法 |
JP2000109324A (ja) * | 1998-10-01 | 2000-04-18 | Murata Mfg Co Ltd | Ni−Cu−Znフェライト材料の製造方法 |
JP2001106529A (ja) * | 1999-07-19 | 2001-04-17 | Mitsui Mining & Smelting Co Ltd | 酸化鉄粒子及びその製造方法 |
Cited By (4)
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JP2011213577A (ja) * | 2010-03-18 | 2011-10-27 | Ngk Insulators Ltd | Ni−Cu−Zn系セラミック焼結体を製造するために使用される粉末およびその製造方法 |
WO2011155353A1 (ja) | 2010-06-10 | 2011-12-15 | 東ソー株式会社 | ヒドロシラン誘導体、その製造方法、及びケイ素含有薄膜の製造法 |
CN104526940A (zh) * | 2014-11-28 | 2015-04-22 | 许昌永新电气股份有限公司 | 户外互感器的成型模具及其浇注固封方法 |
CN104526940B (zh) * | 2014-11-28 | 2016-08-17 | 许昌永新电气股份有限公司 | 户外互感器的成型模具及其浇注固封方法 |
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US8343375B2 (en) | 2013-01-01 |
EP2194029A1 (en) | 2010-06-09 |
JP5498756B2 (ja) | 2014-05-21 |
US20100127423A1 (en) | 2010-05-27 |
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