JP4872833B2 - 圧粉磁心およびその製造方法 - Google Patents
圧粉磁心およびその製造方法 Download PDFInfo
- Publication number
- JP4872833B2 JP4872833B2 JP2007175336A JP2007175336A JP4872833B2 JP 4872833 B2 JP4872833 B2 JP 4872833B2 JP 2007175336 A JP2007175336 A JP 2007175336A JP 2007175336 A JP2007175336 A JP 2007175336A JP 4872833 B2 JP4872833 B2 JP 4872833B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- insulating
- green sheet
- layer green
- oxide film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005291 magnetic effect Effects 0.000 title claims description 143
- 239000000843 powder Substances 0.000 title claims description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000002923 metal particle Substances 0.000 claims description 47
- 239000002245 particle Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 23
- 239000000428 dust Substances 0.000 claims description 20
- 239000000696 magnetic material Substances 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 14
- 238000000576 coating method Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 230000035699 permeability Effects 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000006249 magnetic particle Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910018605 Ni—Zn Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910009369 Zn Mg Inorganic materials 0.000 description 2
- 229910007573 Zn-Mg Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009692 water atomization Methods 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920005822 acrylic binder Polymers 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000009125 cardiac resynchronization therapy Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007739 conversion coating Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F2017/0066—Printed inductances with a magnetic layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F2027/348—Preventing eddy currents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
-
- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
- Y10T29/49078—Laminated
Description
MHz帯域での渦電流損失をさらに低下させる他の方法として、プレス成型した圧粉磁心(コア)の厚みを薄くし、それらを絶縁層を介して積層する方法がある。(例えば、特許文献4参照)
磁性層グリーンシート形成に用いられる絶縁酸化被覆付き軟磁性金属粒子1における金属としては、例えば、鉄、コバルト、ニッケルなどの単金属、あるいはパーマロイ、センダストなどそれらを基とする合金などの透磁率が高い金属材料からなる粒子を用いることができる。
軟磁性金属粒子11の粒径は特に限定されるものではないが、1〜30μmであることが好ましい。
<実施例1>
本実施例では、軟磁性金属粒子11として水アトマイズ法にて作製したNi78Mo5Fe(Niが78wt%、Moが5wt%で残りがFe)粒子(平均粒径8μm)を用いた。また、絶縁酸化被膜12には水ガラス法で形成したSiO2被膜を用いた。この被膜の形成方法を次に示す。
まず、前述した絶縁被膜付き磁性金属粒子11を主原料とした磁性層グリーンシート21を形成した。グリーンシートの製作方法としては、フェライトやセラミックスのグリーンシートを形成する方法と同様の一般的な方法を適用した。バインダーとして、0.1wt%のPVA(ポリビニルアルコール)水溶液を用い、これを金属磁性粒子と混合し、脱泡した後、ドクターブレード法で、乾燥後100μmの厚みとなるように形成した。
本実施例では、図3に示すような3層構造の圧粉磁心を作製した。作製方法は図2に示した実施例1の場合とほぼ同様であるが、磁性層グリーンシートの乾燥後の厚さを90μm/層、絶縁層グリーンシートの乾燥後の厚さを20μmとし、磁性層3層、絶縁層1層、磁性層3層、絶縁層1、磁性層3層の順に積層し、実施例1同様にプレス、熱処理を実施した。
積層圧粉磁心の板厚は550μmであった。得られた積層圧粉磁心は、飽和磁化0.58T、周波数f=2MHzの時の実効透磁率μ’=100、tanδ=μ”/μ’=0.007の性能を示した。
本実施例では、図5に示すような軟磁性金属粒子13の表面に厚い絶縁酸化被膜14を有する厚い絶縁酸化被膜付き軟磁性金属粒子2(以下、粒子2と略す)を用いて形成した絶縁性磁性層グリーンシートを絶縁層グリーンシートの代わりに用いた。
この粒子2は、粒子1と同じように、軟磁性金属粒子13として水アトマイズ法にて作製したNi78Mo5Fe粒子(平均粒径8μm)を用い、絶縁酸化被膜12には水ガラス法で厚みを200nmになるように制御して形成したSiO2被膜を用いた。
得られた積層圧粉磁心は、飽和磁化0.61T、周波数f=2MHz時の実行透磁率μ’=98、tanδ=μ”/μ’=0.0l5の性能を示した。この積層圧粉磁心のμ’およびμ”の周波数特性を図6に示す。なお、比較のため、磁性層グリーンシートに用いたものと同じ絶縁被膜つき金属粒子を用いて、磁性絶縁層を形成せずに、525μmの厚さで形成した圧粉磁心の特性を図6に示した。
11:軟磁性金属粒子
12:絶縁酸化被膜
13:軟磁性金属粒子
14:厚い絶縁酸化被膜
15:SiO2粒子
21:磁性層グリーンシート
22:絶縁層グリーンシート
23:積層グリーンシート
24:プレス後の積層圧粉磁心
2:厚い絶縁酸化被膜付き軟磁性金属粒子
Claims (3)
- 表面に絶縁酸化被膜を有する軟磁性金属粒子をプレス成形して形成する圧粉磁心の製造方法において、表面に絶縁酸化被膜を有する軟磁性金属粒子を用いてグリーンシートを形成する磁性層グリーンシート形成工程と、絶縁性粒子を用いてグリーンシートを形成する絶縁層グリーンシート形成工程と、前記磁性層グリーンシート形成工程で得られた磁性層グリーンシートあるいは該磁性層グリーンシートを必要に応じて所定枚数積層した積層磁性層グリーンシートと、前記絶縁層グリーンシート形成工程で得られた絶縁層グリーンシートとを交互に積層し、プレス成型するプレス成型工程とを有し、
絶縁層グリーンシート形成に用いられる絶縁性粒子が、絶縁酸化被膜を有する軟磁性金属粒子であり、該絶縁酸化被膜の厚みが、前記磁性層グリーンシートを形成する表面に絶縁酸化被膜を有する軟磁性金属粒子の絶縁酸化被膜の厚みより厚いことを特徴とする圧粉磁心の製造方法。 - 前記請求項1に記載の圧粉磁心の製造方法により得られてなる圧粉磁心。
- 表面に絶縁酸化被膜を有する軟磁性金属粒子で形成された圧粉磁心であって、表面に絶縁酸化被膜を有する軟磁性金属粒子を用いて形成された磁性層グリーンシートと、絶縁性粒子を用いて形成された絶縁層グリーンシートとを有し、前記磁性層グリーンシートあるいは該磁性層グリーンシートを必要に応じて所定枚数積層した積層磁性層グリーンシートと、前記絶縁層グリーンシートとが交互に積層されており、
前記絶縁層グリーンシートに用いられる絶縁性粒子が、絶縁酸化被膜を有する軟磁性金属粒子であり、該絶縁酸化被膜の厚みが、前記磁性層グリーンシートを形成する表面に絶縁酸化被膜を有する軟磁性金属粒子の絶縁酸化被膜の厚みより厚いことを特徴とする圧粉磁心。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007175336A JP4872833B2 (ja) | 2007-07-03 | 2007-07-03 | 圧粉磁心およびその製造方法 |
US12/149,774 US7752737B2 (en) | 2007-07-03 | 2008-05-08 | Method for manufacturing a powder magnetic core |
CN200810125901.8A CN101354946B (zh) | 2007-07-03 | 2008-06-03 | 压粉磁芯及其制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007175336A JP4872833B2 (ja) | 2007-07-03 | 2007-07-03 | 圧粉磁心およびその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009016494A JP2009016494A (ja) | 2009-01-22 |
JP4872833B2 true JP4872833B2 (ja) | 2012-02-08 |
Family
ID=40220321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007175336A Expired - Fee Related JP4872833B2 (ja) | 2007-07-03 | 2007-07-03 | 圧粉磁心およびその製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7752737B2 (ja) |
JP (1) | JP4872833B2 (ja) |
CN (1) | CN101354946B (ja) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011086810A (ja) * | 2009-10-16 | 2011-04-28 | Toyota Industries Corp | 圧粉コア |
KR101548777B1 (ko) * | 2011-12-19 | 2015-09-01 | 삼성전기주식회사 | 노이즈 제거 필터 |
US10893609B2 (en) | 2012-09-11 | 2021-01-12 | Ferric Inc. | Integrated circuit with laminated magnetic core inductor including a ferromagnetic alloy |
US9844141B2 (en) * | 2012-09-11 | 2017-12-12 | Ferric, Inc. | Magnetic core inductor integrated with multilevel wiring network |
US11064610B2 (en) | 2012-09-11 | 2021-07-13 | Ferric Inc. | Laminated magnetic core inductor with insulating and interface layers |
US11197374B2 (en) | 2012-09-11 | 2021-12-07 | Ferric Inc. | Integrated switched inductor power converter having first and second powertrain phases |
US11058001B2 (en) | 2012-09-11 | 2021-07-06 | Ferric Inc. | Integrated circuit with laminated magnetic core inductor and magnetic flux closure layer |
US10244633B2 (en) | 2012-09-11 | 2019-03-26 | Ferric Inc. | Integrated switched inductor power converter |
US11116081B2 (en) | 2012-09-11 | 2021-09-07 | Ferric Inc. | Laminated magnetic core inductor with magnetic flux closure path parallel to easy axes of magnetization of magnetic layers |
KR20140076282A (ko) * | 2012-12-12 | 2014-06-20 | 삼성전기주식회사 | 연자성 코어 및 그 제조방법 |
CN103198918B (zh) * | 2013-04-15 | 2016-04-20 | 深圳顺络电子股份有限公司 | 一种无空气隙的变压器及其制造方法 |
US9647053B2 (en) | 2013-12-16 | 2017-05-09 | Ferric Inc. | Systems and methods for integrated multi-layer magnetic films |
US11302469B2 (en) | 2014-06-23 | 2022-04-12 | Ferric Inc. | Method for fabricating inductors with deposition-induced magnetically-anisotropic cores |
US10629357B2 (en) | 2014-06-23 | 2020-04-21 | Ferric Inc. | Apparatus and methods for magnetic core inductors with biased permeability |
US10283249B2 (en) | 2016-09-30 | 2019-05-07 | International Business Machines Corporation | Method for fabricating a magnetic material stack |
JP6556780B2 (ja) * | 2017-04-03 | 2019-08-07 | 株式会社豊田中央研究所 | 圧粉磁心、磁心用粉末およびそれらの製造方法 |
JP7124342B2 (ja) * | 2018-02-28 | 2022-08-24 | セイコーエプソン株式会社 | 絶縁物被覆軟磁性粉末、絶縁物被覆軟磁性粉末の製造方法、圧粉磁心、磁性素子、電子機器および移動体 |
JP6536860B1 (ja) * | 2018-03-09 | 2019-07-03 | Tdk株式会社 | 軟磁性金属粉末、圧粉磁心および磁性部品 |
JP2019192868A (ja) | 2018-04-27 | 2019-10-31 | セイコーエプソン株式会社 | 絶縁物被覆軟磁性粉末、圧粉磁心、磁性素子、電子機器および移動体 |
CN109285650A (zh) * | 2018-10-30 | 2019-01-29 | 钢铁研究总院 | 一种低涡流损耗烧结稀土永磁体及其制备方法 |
US20220231548A1 (en) * | 2019-04-30 | 2022-07-21 | Siemens Aktiengesellschaft | Laminated iron core and manufacturing method therefor |
CN113963883A (zh) * | 2021-10-19 | 2022-01-21 | 安徽先锐软磁科技有限公司 | 一种磁性能可调控的复合磁芯及其制备方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638402A (en) | 1979-09-05 | 1981-04-13 | Tdk Corp | High density sintered magnetic body and its manufacture |
JPS57154813A (en) * | 1981-03-19 | 1982-09-24 | Fujitsu Ltd | Molding device for multilayer green sheet |
JP3162692B2 (ja) * | 1989-10-16 | 2001-05-08 | 株式会社リコー | インダクター及びトランス |
JPH0456113A (ja) * | 1990-06-21 | 1992-02-24 | Matsushita Electric Ind Co Ltd | インダクタンス部品およびその製造法 |
JPH06306405A (ja) * | 1993-04-24 | 1994-11-01 | Ii R D:Kk | 複合圧粉磁芯の製造方法 |
CN2257072Y (zh) * | 1995-06-23 | 1997-06-25 | 蒋路平 | 节能铁芯 |
JPH0974016A (ja) | 1995-09-05 | 1997-03-18 | Res Inst Electric Magnetic Alloys | 高周波低損失磁性薄膜 |
JPH1064007A (ja) | 1996-08-16 | 1998-03-06 | Sony Corp | 磁気ヘッドおよび磁気記録再生装置 |
JPH1174140A (ja) | 1997-08-29 | 1999-03-16 | Tokin Corp | 圧粉磁芯の製造方法 |
JPH11176680A (ja) * | 1997-12-11 | 1999-07-02 | Tokin Corp | 磁芯の製造方法 |
JP2000054083A (ja) | 1998-08-07 | 2000-02-22 | Alps Electric Co Ltd | 軟磁性多層膜とこの軟磁性多層膜を用いた平面型磁気素子、フィルタ、及び薄膜磁気ヘッド、ならびに前記軟磁性多層膜の製造方法 |
JP2001085211A (ja) | 1999-09-16 | 2001-03-30 | Aisin Seiki Co Ltd | 軟磁性粒子,軟磁性成形体及びその製造方法 |
JP4758599B2 (ja) * | 2001-01-18 | 2011-08-31 | 太陽誘電株式会社 | グラニュラ磁性薄膜及びその製造方法,積層磁性膜,磁性部品,電子機器 |
US20040238796A1 (en) | 2001-08-09 | 2004-12-02 | Masanori Abe | Composite magnetic material prepared by compression forming of ferrite-coated metal particles and method for preparation thereof |
JP2004221522A (ja) * | 2002-11-18 | 2004-08-05 | Alps Electric Co Ltd | 電波吸収体及び電波吸収体の製造方法 |
US20050003079A1 (en) * | 2003-03-17 | 2005-01-06 | Tdk Corporation | Production method of laminated soft magnetic member, production method of soft magnetic sheet, and method for heat treating laminated soft magnetic member |
JP2005116666A (ja) * | 2003-10-06 | 2005-04-28 | Matsushita Electric Ind Co Ltd | 磁性素子 |
JP2005317679A (ja) * | 2004-04-27 | 2005-11-10 | Fuji Electric Holdings Co Ltd | 磁気部品およびその製造方法 |
JP3964401B2 (ja) * | 2004-04-27 | 2007-08-22 | Necトーキン株式会社 | アンテナ用コア、コイルアンテナ、時計、携帯電話機、電子装置 |
-
2007
- 2007-07-03 JP JP2007175336A patent/JP4872833B2/ja not_active Expired - Fee Related
-
2008
- 2008-05-08 US US12/149,774 patent/US7752737B2/en not_active Expired - Fee Related
- 2008-06-03 CN CN200810125901.8A patent/CN101354946B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7752737B2 (en) | 2010-07-13 |
JP2009016494A (ja) | 2009-01-22 |
US20090007418A1 (en) | 2009-01-08 |
CN101354946B (zh) | 2012-07-04 |
CN101354946A (zh) | 2009-01-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4872833B2 (ja) | 圧粉磁心およびその製造方法 | |
JP2008270368A (ja) | 圧粉磁心およびその製造方法 | |
JP2007019134A (ja) | 複合磁性材料の製造方法 | |
WO2011016207A1 (ja) | 複合磁性体及びその製造方法 | |
CN103545074A (zh) | 一种用于制备金属粉芯的具有复合结构的磁性金属粉末 | |
JP2009158802A (ja) | 圧粉磁心の製造方法 | |
JP2007214425A (ja) | 圧粉磁心およびそれを用いたインダクタ | |
JP4534523B2 (ja) | 複合焼結磁性材料の製造方法 | |
JP4888784B2 (ja) | 絶縁酸化被膜付き軟磁性金属粒子 | |
JP4868583B2 (ja) | インダクタ及びその製造方法 | |
JP2005317679A (ja) | 磁気部品およびその製造方法 | |
JP2012204744A (ja) | 軟磁性金属粉末及びその製造方法、圧粉磁心及びその製造方法 | |
JP2009054709A (ja) | 圧粉磁心及びその製造方法 | |
JP2009164402A (ja) | 圧粉磁心の製造方法 | |
JP2010092989A (ja) | 圧粉磁心およびその製造方法 | |
JP2006245183A (ja) | 積層酸化膜被覆鉄粉末 | |
JP2011017057A (ja) | アルミニウム酸化物と鉄の複合焼結体、およびその製造方法 | |
JP2006344683A (ja) | ドラムコア及びインダクタ | |
JP4507176B2 (ja) | 複合磁性材料および磁気部品 | |
JP2006241504A (ja) | 積層酸化膜被覆鉄粉末 | |
WO2022121208A1 (zh) | 一种软磁性粉末及其制备方法和用途 | |
JP2010199407A (ja) | 圧粉磁心の製造方法 | |
JP4561988B2 (ja) | 軟磁性金属圧粉磁心用軟磁性金属粉末の製造方法、及び軟磁性金属圧粉磁心 | |
JP4827719B2 (ja) | 薄型磁気部品の製造方法 | |
JP2005136358A (ja) | 磁芯及び軟磁性鉄基粉末 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20091112 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20091112 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20091112 |
|
A625 | Written request for application examination (by other person) |
Free format text: JAPANESE INTERMEDIATE CODE: A625 Effective date: 20100514 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20110422 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110524 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110527 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110708 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20111025 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20111107 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20141202 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4872833 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |