JP4265358B2 - 複合焼結磁性材の製造方法 - Google Patents
複合焼結磁性材の製造方法 Download PDFInfo
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- JP4265358B2 JP4265358B2 JP2003345399A JP2003345399A JP4265358B2 JP 4265358 B2 JP4265358 B2 JP 4265358B2 JP 2003345399 A JP2003345399 A JP 2003345399A JP 2003345399 A JP2003345399 A JP 2003345399A JP 4265358 B2 JP4265358 B2 JP 4265358B2
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- ferrite
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- 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
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- 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
- H01F1/14—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 metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14708—Fe-Ni based alloys
- H01F1/14733—Fe-Ni based alloys in the form of particles
- H01F1/14741—Fe-Ni based alloys in the form of particles pressed, sintered or bonded together
- H01F1/1475—Fe-Ni based alloys in the form of particles pressed, sintered or bonded together the particles being insulated
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- 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
- H01F1/14—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 metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
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- 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
- H01F1/34—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 non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9265—Special properties
- Y10S428/928—Magnetic property
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12049—Nonmetal component
- Y10T428/12056—Entirely inorganic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
Description
った金属粉末を熱処理し表面にSiO2被膜を形成した後、結着材としての合成樹脂を混合してから加圧成形、熱処理を施すことで金属粉末どうしの結着を確保した圧粉磁心が知られている(特許文献1、特許請求の範囲1、2参照)。
の合成樹脂である。
on/cm2を用いるとよい。0.5ton/cm2より低い圧力の場合、低い成形体密度しか得られず、後の焼結工程を経ても複合焼結磁性材11の内部に気孔が多数残留し、焼結体密度も低くなる結果、高磁気特性化が困難となる。また、15ton/cm2より高
い圧力の場合、金属粉末12どうしが接触するため、渦電流損失が増大する。また、加圧成形時の金型強度を確保するため金型が大型化し、また、成形圧力を確保するためプレス機が大型化する。さらに、金型、プレス機の大型化により生産性が低くなり、磁性材のコストアップにつながる。
合焼結磁性材11は、透磁率が低く、かつ、コア損失も大きい。また、成形圧力が15ton/cm2より高い場合コア損失が非常に大きなものとなっている。
後、2%酸素雰囲気中で(表4)に記載の温度で1〜2hr熱処理を行った後、窒素雰囲気中で冷却を行った試料21〜26を用いて評価した。試料の形状は外形15mm、内径10mm、高さ3mmのトロイダルコアとした。
ることが可能である。この場合、金属粉末12とフェライト原料を所定量秤込んだ後、混合分散し、加圧成形の後、成形体を焼結することでフェライト原料をフェライトに変化させるとともに、金属粉末12とフェライト層13との間に拡散層15を形成することができる。
2 引張試験治具
3 加重の方向を示した矢印
11 複合焼結磁性材
12 金属粉末
13 フェライトの層
14 フェライト粉末
15 拡散層
16 ポア
17 トランス
18 チョークコイル
101 金属粉末
102 絶縁材としてのSiO2
103 結着材としての合成樹脂
104 圧粉磁芯
105 金属粉末
106 フェライトの層
Claims (6)
- Fe、Fe−Si系、Fe−Ni系、Fe−Ni−Mo系、Fe−Si−Al系から選ばれる少なくとも一種の金属粉末と、Ni−Zn系、Mn−Zn系、Mg−Zn系から選ばれる少なくとも一種のフェライト材を所定量計り込み、混合分散した後、所定の形状に加圧成形し、この成形体を非酸化雰囲気中で焼結して金属粉末の周囲にフェライト材と一体化される拡散層を形成し、その後前記フェライト材の平衡酸素分圧雰囲気中における熱処理を行う複合焼結磁性材の製造方法。
- Fe、Fe−Si系、Fe−Ni系、Fe−Ni−Mo系、Fe−Si−Al系から選ばれる少なくとも一種の金属粉末の表面に、Ni−Zn系、Mn−Zn系、Mg−Zn系から選ばれる少なくとも一種のフェライト材を形成した後、所定の形状に加圧成形し、この成形体を非酸化雰囲気中で焼結して金属粉末の周囲にフェライト材と一体化される拡散層を形成し、その後前記フェライト材の平衡酸素分圧雰囲気中における熱処理を行う複合焼結磁性材の製造方法。
- フェライト材としてフェライト粉末を用いる請求項1又は2に記載の複合焼結磁性材の製造方法。
- フェライト材としてフェライト原料を用いる請求項1又は2に記載の複合焼結磁性材の製造方法。
- 加圧成形を、圧力0.5ton/cm2〜15ton/cm2で行う請求項1又は2に記載の複合焼結磁性材の製造方法。
- 焼結を、温度800℃〜1300℃で行う請求項1又は2に記載の複合焼結磁性材の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2003345399A JP4265358B2 (ja) | 2003-10-03 | 2003-10-03 | 複合焼結磁性材の製造方法 |
US10/955,883 US7422697B2 (en) | 2003-10-03 | 2004-09-30 | Composite sintered magnetic material, its manufacturing method, and magnetic element using composite sintered magnetic material |
EP04023421A EP1521276B1 (en) | 2003-10-03 | 2004-10-01 | Manufacturing method of composite sintered magnetic material |
CNB2004100903067A CN100343929C (zh) | 2003-10-03 | 2004-10-08 | 复合烧结磁性材料及其制法、及使用该材料的磁性元件 |
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JP2003345399A JP4265358B2 (ja) | 2003-10-03 | 2003-10-03 | 複合焼結磁性材の製造方法 |
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JP2005113169A JP2005113169A (ja) | 2005-04-28 |
JP4265358B2 true JP4265358B2 (ja) | 2009-05-20 |
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US (1) | US7422697B2 (ja) |
EP (1) | EP1521276B1 (ja) |
JP (1) | JP4265358B2 (ja) |
CN (1) | CN100343929C (ja) |
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JPH04226003A (ja) * | 1990-05-09 | 1992-08-14 | Tdk Corp | 複合軟磁性材料および複合軟磁性材料用コート粒子 |
JPH05109520A (ja) | 1991-08-19 | 1993-04-30 | Tdk Corp | 複合軟磁性材料 |
DE19960095A1 (de) * | 1999-12-14 | 2001-07-05 | Bosch Gmbh Robert | Gesinterter weichmagnetischer Verbundwerkstoff und Verfahren zu dessen Herstellung |
JP3946073B2 (ja) | 2001-04-02 | 2007-07-18 | 三菱マテリアルPmg株式会社 | 高密度および高透磁性を有する複合軟磁性焼結材およびその製造方法 |
WO2002081130A1 (fr) * | 2001-04-02 | 2002-10-17 | Mitsubishi Materials Corporation | Materiau fritte magnetique doux composite ayant une densite elevee et une permeabilite magnetique elevee, et procede permettant sa preparation |
JP2003183704A (ja) * | 2001-12-20 | 2003-07-03 | Mitsubishi Materials Corp | 高密度を有し透磁性に優れたFe−Co系複合軟磁性燒結材の製造方法 |
JP2003193174A (ja) | 2001-12-27 | 2003-07-09 | Mitsubishi Materials Corp | 高密度を有し透磁性に優れたFe−Si系複合軟磁性燒結材の製造方法 |
JP2003243216A (ja) * | 2002-02-14 | 2003-08-29 | Mitsubishi Materials Corp | 高密度を有し透磁性に優れたFe−Co系複合軟磁性燒結材の製造方法 |
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2003
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2004
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- 2004-10-01 EP EP04023421A patent/EP1521276B1/en not_active Expired - Fee Related
- 2004-10-08 CN CNB2004100903067A patent/CN100343929C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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EP1521276B1 (en) | 2012-02-01 |
US20050072955A1 (en) | 2005-04-07 |
US7422697B2 (en) | 2008-09-09 |
EP1521276A3 (en) | 2006-05-10 |
CN100343929C (zh) | 2007-10-17 |
EP1521276A2 (en) | 2005-04-06 |
JP2005113169A (ja) | 2005-04-28 |
CN1637962A (zh) | 2005-07-13 |
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