WO2002080202A1 - Materiau magnetique composite - Google Patents

Materiau magnetique composite Download PDF

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Publication number
WO2002080202A1
WO2002080202A1 PCT/JP2001/007516 JP0107516W WO02080202A1 WO 2002080202 A1 WO2002080202 A1 WO 2002080202A1 JP 0107516 W JP0107516 W JP 0107516W WO 02080202 A1 WO02080202 A1 WO 02080202A1
Authority
WO
WIPO (PCT)
Prior art keywords
composite magnetic
iron
magnetic material
ferrite
resin
Prior art date
Application number
PCT/JP2001/007516
Other languages
English (en)
Japanese (ja)
Inventor
Yoshiyuki Shimada
Original Assignee
Sumitomo Electric Industries, Ltd.
Denso Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries, Ltd., Denso Corporation filed Critical Sumitomo Electric Industries, Ltd.
Priority to JP2002578524A priority Critical patent/JPWO2002080202A1/ja
Publication of WO2002080202A1 publication Critical patent/WO2002080202A1/fr

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Classifications

    • 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
    • H01F1/20—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 in the form of particles, e.g. powder
    • H01F1/22—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • H01F1/26—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 in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
    • 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
    • H01F1/20—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 in the form of particles, e.g. powder
    • H01F1/22—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

Definitions

  • the present invention relates to a composite magnetic material, and more particularly to a composite magnetic material provided with composite magnetic particles having gold magnetic particles and a layer containing metal oxide or a metal oxide magnetic substance.
  • the metal magnetic material has a high saturation magnetic flux density and magnetic permeability, has a low electrical resistivity (1 0- 6 ⁇ I 0 ⁇ cm), a large eddy current loss in middle and high frequency range. As a result, the magnetic properties deteriorate, and it is difficult to use it alone.
  • the metal oxide magnetic material has a higher electrical resistivity than the magnetic metal material (1 ⁇ 1 0 8 ⁇ cm) , a small eddy current loss in middle and high frequency range, the deterioration of the magnetic properties Sukunashi.
  • the saturation magnetic flux density is 1 to 3 to 1/2 of that of metallic magnetic materials, there are limitations on applications.
  • the surface of iron powder is coated with iron phosphate.
  • a method of forming a composite magnetic material by joining a plurality of composite magnetic particles having a film formed thereon with an organic substance such as polyphenylene ether or polyetherimide and an amide type oligomer.
  • the composite magnetic material When a composite magnetic material is used in the control mechanism of an automobile engine, not only the magnetic properties described above but also the temperature of the engine becomes high, so the composite magnetic material is required to have heat resistance.
  • the composite magnetic material described in the above publication the composite magnetic particles are bonded with an organic material having low heat resistance such as polyphenylene ether or polyetherimide and an amide type oligomer. Softens. As a result, there has been a problem that the bonding strength between adjacent composite magnetic particles is reduced, and the strength of the composite magnetic material is reduced.
  • this invention is made in order to solve the above-mentioned problems, and an object of this invention is to provide a composite magnetic material with high heat resistance. Disclosure of the invention
  • the present inventors have conducted various studies on a technology for improving the heat resistance of a composite magnetic material, and found that by setting the long-term heat resistance of the organic material joining the composite magnetic particles to 200 or more, the composite magnetic material was improved.
  • ⁇ long-term heat-resistant temperature '' is the heat-resistant temperature specified in UL (Underwriters Laboratories) Standard 746B, and the mechanical properties of the material after long-term heat treatment in zero gravity are reduced. It is a scale indicating the heat resistance limit. Specifically, it refers to a temperature at which the properties at room temperature, such as tensile strength and impact strength, are reduced by half after heat treatment in air for 100,000 hours.
  • an Alewuse plot of the high temperature accelerated test is used for estimating the long-term heat resistance temperature.
  • the composite magnetic material according to the present invention which has been made based on such findings, includes a plurality of composite magnetic particles joined to each other by an organic material.
  • the composite magnetic particles have metal magnetic particles and a coating layer containing a metal oxide or a metal oxide magnetic substance bonded to the surface of the metal magnetic particles, and the organic material has a long-term temperature of 200 ° C. or more. Has heat resistant temperature.
  • the plurality of composite magnetic particles are bonded to each other by an organic substance having a long-term heat-resistant temperature of 200 ° C. or more. Therefore, high Organic matter does not soften even at warm temperatures. As a result, the bonding force between the overlapping composite magnetic particles is maintained, so that the heat resistance of the composite magnetic material can be improved.
  • the organic substance is a thermoplastic resin having a ketone group, a thermoplastic polyethernitrile resin, a thermoplastic polyamide resin, a thermosetting polyamide resin, a thermoplastic polyimide resin, a thermosetting polyimide resin, a polyarylate. It includes at least one selected from the group consisting of a resin and a resin having fluorine.
  • Polyetheretherketone (long-term heat resistance: 260 ° C), polyetherketoneketone (PEKK, long-term heatproof temperature: 240 ° C), polyetherketone (PEK, long-term) Heat resistant temperature 220 ° C) and polyketone sulfide (PKS, long-term heat resistant temperature 210-240 ° C).
  • Thermoplastic polyamide Doimi de there is Amoko Ltd. trade name TOR LON (long Heat resistance temperature 2 30 D C ⁇ 2 50 ° C ) or Toray trade name TI 5000 (long-term heat resistance temperature 2 50 ° or more C) .
  • Polyarylate is ekonol (product name, long-term heat resistance: 240 ° C to 260 ° C).
  • thermosetting polyamide imide As a thermosetting polyamide imide, there is a trade name T I 1000 (prolonged heat resistance temperature 230.C) manufactured by Toray.
  • fluorine-containing resins examples include polytetrafluoroethylene (PTFE, long-term heat resistance of 260 ° C) and tetrafluoroethylene-perfluoroalkylbierether copolymer (PFA, long-term heat resistance of 260 ° C). C) and tetrafluoroethylene-hexafluoro Q propylene copolymer (FEP, long-term heat resistance 200 ° C).
  • the thickness of the coating layer is from 0.005 ⁇ m to 20 ⁇ m. If the thickness of the covering layer is less than 0.005 / 7. Nr, it will be difficult to obtain insulative properties by the covering layer.
  • the thickness of the coating layer is particularly preferably from 0.0 ⁇ m to 5 ⁇ m.
  • the thickness of the coating layer is not less than 0.05 ⁇ m and not more than 0.1 ⁇ rn.
  • the metal oxide magnetic material is Magunetai bets (F e 2 ⁇ 3), manganese (Mn) mono-zinc (Zn) ferrite, nickel (N i) —zinc (Zn) ferrite, kono noreto (Co) ferrite, manganese (Mn) ferrite, nickelo (Ni) ferrite, copper (Cu) ferrite, magnesium (Mg) ferrite, lithium (Li) ferrite, manganese (Mn) —magnesium (Mg) ferrite, copper (Cu) —zinc (Zn) ferrite and manganese (Mg) ) —Zinc (Zn) at least one species selected from the group consisting of ferrite.
  • the metal oxide magnetic substance contains metal oxide magnetic particles, and the average particle diameter of the metal oxide magnetic particles is 0.005 ⁇ m or more and 5 ⁇ m or less. If the average particle diameter of the metal oxide magnetic particles is less than 0.005 ⁇ m, it becomes difficult to produce the metal oxide magnetic particles. On the other hand, if the average particle size of the gold oxide magnetic particles exceeds 5 m, it is difficult to make the thickness of the coating layer uniform.
  • the average particle size of the metal oxide magnetic particles is particularly preferably 0.5 / .ra or more and 2 ⁇ or less.
  • average particle size refers to the particle size of a particle whose sum of masses from the smaller particle size reaches 50% of the total mass in a histogram of the particle size measured by the sieving method. That is, the c- metal oxide magnetic particles having a 50% particle diameter D50 have a soft magnetic property and an electric resistivity of L 0 to 3 ⁇ cm or more.
  • various soft magnetic ferrites or iron nitrides can be used. Particularly, manganese-zinc ferrite or nickel-zinc ferrite having a high saturation magnetic flux density is preferable. Use one or two or more of these.
  • the metal oxide is an oxide containing phosphorus (P) and iron (F e).
  • P phosphorus
  • F e iron
  • the coating layer covering the surface of the metal magnetic particles can be made thinner. Therefore, the density of the composite magnetic material can be increased, and the magnetic properties are improved.
  • the average particle size of the metal magnetic particles is 5 ⁇ m or more and 200 ⁇ m or less. If the average particle size of the gold magnetic particles is less than 5 am, the metal will be oxidized and the magnetic properties will deteriorate. If the average particle size of the metal magnetic particles exceeds 200 ⁇ m, the compressibility during molding is reduced, so that the density of the molded body is reduced and it is difficult to remove it.
  • the magnetic metal particles include iron CF e), iron (F e) —silicon (S i) -based alloy, iron (F e) —nitrogen (N) -based alloy, and iron (F e) —nickel (N i ) Based alloy, Iron (F e) —Carbon (C) based alloy, Iron (F e) —Boron (B) based alloy, Iron (F e) —Cobanoleto (C o) based alloy, Iron (F e) —Lin (P ) -Based alloys, iron (F e)-nickel (Ni)-cobalt (Co) based alloys and iron (Fe)-aluminum (A).)-Silicon (Si) based alloys Including at least one selected from One or more of these may be used. As long as the material of the metal magnetic particles is a soft magnetic metal, it may be a simple metal or an alloy, and there is no particular limitation.
  • the ratio of the organic substance to the composite magnetic particles is from 0.05% to 2% by mass. More preferably, the ratio of the organic substance to the composite magnetic particles is from 0.1% to 1% by mass.
  • 1 2 000 flux density at the time of applying a magnetic field above Arufazumbleiiota B is not less 1 5 k G or more, the electrical resistivity p force; 1 0 - no more than 3 Omega cm least 1 0 2 Omega cm, temperature Flexural strength at 200 ° C is 10 OMPa or more.
  • the mass ratio of the metal oxide or the metal oxide magnetic substance to the metal magnetic particles is desirably 0.2 ° / 0 or more and 30% or less. That is, (mass of metal oxide or metal oxide magnetic substance) / (mass of metal magnetic particles) is desirably 0.2% or more and 30% or less. If the ratio is less than 0.2%, the electric resistivity decreases, which causes a decrease in AC magnetic characteristics. On the other hand, if the ratio exceeds 30%, the ratio of the metal oxide or the metal oxide magnetic material increases, and the saturation magnetic flux density decreases. More preferably, the ratio of the metal oxide or the metal oxide magnetic substance to the metal magnetic particles is preferably not less than 0.4% and not more than 0.0% by mass.
  • the composite magnetic material according to the present invention has both high magnetic properties and high heat resistance, electronic components such as choke coils, switching power supply elements and magnetic heads, various motor components, automotive solenoids, various magnetic sensors, various types Used for solenoid valves. BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 is a sectional view of a composite magnetic material according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION (Example ]. )
  • Somaroy 500 (trade name, manufactured by Heganess Co., Ltd.) was prepared.
  • a coating layer made of a metal oxide containing phosphorus and iron is formed on the surface of gold dust and iron powder as magnetic particles.
  • the average particle size of the composite magnetic particles is 150 ⁇ ⁇ ⁇ or less, and the average thickness of the coating layer is 20 nHi.
  • the composite magnetic particles so that the mass ratio of 1% 0., the average particle size of u this particles were prepared particles Porieterue Ichite ketone resin is less 3 mu m.
  • PVD method plating method, sputtering method, evaporation method, sol-gel method, etc. can be used.
  • the mixed powder was placed in a mold and molded.
  • a mold lubrication molding in which a lubricant was applied to a mold to perform molding was used.
  • the temperature of the mold was 130 ° C
  • the temperature of the mixed powder was 130 ° C
  • the molding pressure was 784 MPa to form a compact.
  • the temperature of the mold can be from 70 C to 150 ° C
  • the temperature of the mixed powder can be 200 from room temperature
  • the molding pressure can be from 392 MPa to 98 OMPa.
  • the molded body was heat-treated (annealed) at a temperature of 420 ° C in a nitrogen gas atmosphere.
  • the polyetheretherketone softened and entered the interface between the plurality of composite magnetic particles to join the composite magnetic particles to obtain a solid.
  • the temperature of the heat treatment is preferably in the range of 340 ° C to 450 ° C.
  • the polyetheretherketone does not soften completely and does not diffuse uniformly. If the temperature is 450 ° C or higher, the strength of the composite magnetic material does not improve due to decomposition of the polyetheretherketone.
  • heat treatment in argon or helium increases manufacturing costs.
  • HP HotIssostaticPRessinng
  • SPS SparkPlassaSintering
  • FIG. 1 shows a composite according to the invention. It is sectional drawing of a magnetic forest material.
  • composite magnetic material 1 includes a plurality of composite magnetic particles 30 joined to each other by organic substance 40.
  • the composite magnetic particles 30 include metal magnetic particles 10 and a coating layer 20 containing a metal oxide or a metal oxide magnetic substance, which is bonded to the surface of the metal magnetic particles 10.
  • Organic substance 40 has a long-term heat-resistant temperature of 200 ° C. or higher.
  • the density of this composite magnetic material 1 was 7.55 g Zc.
  • the magnetic flux density when a magnetic field of 1200 Am was applied was 17 kG, and the electric resistivity p was 100 ⁇ cm.
  • the composite magnetic material 1 was machined into a prism shape having a length, width, and thickness of 1 Omm X 5 Omm X 1.0 mm.
  • the transverse rupture strength was] .5 OMPa.
  • the transverse rupture strength was 13 OMPa.
  • the long-term heat resistance of polyetheretherketone is 200 ° C. or higher, the strength at high temperatures is increased, and the heat resistance of composite magnetic material 1 is improved.
  • polyetheretherketone has a low viscosity (melt viscosity) when softened, so even a small amount of the polyetheretherketone causes a uniform capillary phenomenon.
  • the composite magnetic particles 1 can be surely joined to each other with a small amount, the amount of organic substances can be reduced. As a result, the ratio of the metal magnetic material 10 can be increased, and the magnetic characteristics can be improved.
  • the use of the metal mold molding can reduce the amount of lubricant in the molded body. As a result, the density of one composite magnetic material is improved, and the magnetic properties can be improved. Further, since it is possible to prevent the occurrence of voids inside the molded body, it is possible to improve the magnetic permeability.
  • Example 2 a composite magnetic material was obtained by the same manufacturing method as in Example 1 except that the average thickness of the coating layer in Example 1 was set to 511 m and 100 nm. The density, the magnetic flux density when a magnetic field of 1200 AZm was applied, and the electrical resistivity of the obtained composite magnetic material compact were measured. Further, the composite magnetic material was machined into a square main shape having a length, width, and thickness of 10 mm ⁇ 50 mm ⁇ 10 mm. Flexural strength when performing a three-point bending test at room temperature with a span of 40 mm. The bending strength at the time of performing a three-point bending test at a temperature of 200 ° C was measured. Table 1 shows the results.
  • Table 1 shows that the electrical resistivity is higher than that of Example 1. Therefore, when it is desired to improve the electric resistivity, it is preferable that the average thickness of the coating layer is not less than 50 ⁇ and not more than 100 nm.
  • Somaroy 500 (trade name, manufactured by Heganess Co., Ltd.) was prepared.
  • a coating layer made of a metal oxide containing phosphorus and iron is formed on the surface of iron powder as magnetic metal particles.
  • the average particle size of the composite magnetic particles is 150 ⁇ m or less, and the average thickness of the coating layer is 20 nm.
  • Amid-type oligomer particles were mixed so that the mass ratio to the composite magnetic particles was 0.6%.
  • the mixed powder was placed in a mold, compressed at room temperature at a pressure of 60 OMPa, and then heat-treated in the atmosphere at a temperature of 300 ° C for 60 minutes. Thus, a composite magnetic material was obtained.
  • the density of this composite magnetic material was 7.15 g cm 3 .
  • the magnetic flux density was 15 kG, and the electric resistivity p was 2 ⁇ cm.
  • the composite magnetic material was machined into a prism shape having a length, width, and thickness of 1 OmmX5OmmX10 mm.
  • the transverse rupture strength was 12 OMPa.
  • the transverse rupture strength was 1 OMPa.
  • the coating layer was formed of an oxide containing phosphorus and iron. Even if the coating layer was formed of metal oxide magnetic particles, the same effect as in the above embodiment was obtained. Can be obtained. In this case, it is necessary to mix the metal magnetic particles and the metal oxide magnetic particles.
  • the method of mixing the metal magnetic particles and the metal oxide magnetic particles such as a mechanical two-way lubricating method, a ball mill, a vibrating ball mill, a planetary ball mill, a mechanofusion, a coprecipitation method, and a chemical vapor deposition method. It is possible to use any of (CVD method), physical vapor deposition method (PVD method), plating method, sputtering method, vapor deposition method, and sol-gel method.
  • a composite magnetic material having high heat resistance can be obtained.
  • the composite magnetic material according to the present invention is used for electronic components such as choke coils, switching power supply elements, and magnetic heads, various motor components, automotive solenoids, various magnetic sensors, various solenoid valves, and the like.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

La présente invention concerne un matériau magnétique composite (1) qui est formé d'une pluralité de particules magnétiques composites (30) reliées entre elles par une substance organique (40). La particule magnétique composite (30) est constituée d'une particule magnétique métallique (10) et d'une couche de revêtement (20) qui est fixée à la surface de la particule magnétique métallique (10) et qui renferme un oxyde métallique ou une substance magnétique d'oxyde métallique. La substance organique (40) présente une température de résistance à la chaleur à long terme qui est supérieure ou égale à 200°. La substance organique (40) contient au moins un type sélectionné dans le groupe formé par une résine thermoplastique ayant un groupe cétone, une résine nitrile polyéther thermoplastique, une résine polyamide-imide thermoplastique, une résine polyamide-imide thermodurcissable, une résine polyimide thermoplastique, une résine polyimide thermodurcissable, une résine polyacrylate et une résine renfermant du fluorure.
PCT/JP2001/007516 2001-03-29 2001-08-31 Materiau magnetique composite WO2002080202A1 (fr)

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JP2002578524A JPWO2002080202A1 (ja) 2001-03-29 2001-08-31 複合磁性材料

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JP2001096326 2001-03-29
JP2001-96326 2001-03-29

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WO2002080202A1 true WO2002080202A1 (fr) 2002-10-10

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004107367A1 (fr) * 2003-05-30 2004-12-09 Sumitomo Electric Industries, Ltd. Materiau magnetique doux, noyau de moteur, noyau de transformateur et procede pour produire un materiau magnetique doux
WO2005013294A1 (fr) * 2003-07-30 2005-02-10 Sumitomo Electric Industries, Ltd. Materiau a aimantation temporaire, noyau agglomere, noyau de transformateur, noyau de moteur, et procede de production de noyau agglomere
WO2005045857A1 (fr) * 2003-11-05 2005-05-19 Mitsubishi Materials Pmg Corporation Noyau d'electroaimant et son procede de production
JP2009295991A (ja) * 2009-07-15 2009-12-17 Sumitomo Electric Ind Ltd 圧粉磁心の製造方法
US8241518B2 (en) 2006-05-30 2012-08-14 Sumitomo Electric Industries, Ltd. Soft magnetic material and dust core
WO2014140982A1 (fr) * 2013-03-14 2014-09-18 Sabic Innovative Plastics Ip B.V. Articles polymères fonctionnellement profilés, et procédés de fabrication correspondants
WO2017154864A1 (fr) * 2016-03-10 2017-09-14 パナソニックＩｐマネジメント株式会社 Matériau ferritique, corps magnétique composite, composant de bobine et bloc d'alimentation

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JP2000173817A (ja) * 1998-12-07 2000-06-23 Sanyo Special Steel Co Ltd 圧粉磁心用金属磁性粉末

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JPS5638402A (en) * 1979-09-05 1981-04-13 Tdk Corp High density sintered magnetic body and its manufacture
JPH04352403A (ja) * 1991-05-30 1992-12-07 Tokin Corp 複合型圧粉磁芯
JPH07235410A (ja) * 1994-02-22 1995-09-05 Yamauchi Corp 樹脂結合型軟質磁性体
JPH11251131A (ja) * 1998-03-02 1999-09-17 Hitachi Powdered Metals Co Ltd 高周波用圧粉磁心及びその製造方法
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004107367A1 (fr) * 2003-05-30 2004-12-09 Sumitomo Electric Industries, Ltd. Materiau magnetique doux, noyau de moteur, noyau de transformateur et procede pour produire un materiau magnetique doux
WO2005013294A1 (fr) * 2003-07-30 2005-02-10 Sumitomo Electric Industries, Ltd. Materiau a aimantation temporaire, noyau agglomere, noyau de transformateur, noyau de moteur, et procede de production de noyau agglomere
WO2005045857A1 (fr) * 2003-11-05 2005-05-19 Mitsubishi Materials Pmg Corporation Noyau d'electroaimant et son procede de production
US8241518B2 (en) 2006-05-30 2012-08-14 Sumitomo Electric Industries, Ltd. Soft magnetic material and dust core
JP2009295991A (ja) * 2009-07-15 2009-12-17 Sumitomo Electric Ind Ltd 圧粉磁心の製造方法
WO2014140982A1 (fr) * 2013-03-14 2014-09-18 Sabic Innovative Plastics Ip B.V. Articles polymères fonctionnellement profilés, et procédés de fabrication correspondants
CN105189621A (zh) * 2013-03-14 2015-12-23 沙特基础全球技术有限公司 功能梯度聚合物制品及其制备方法
US9731456B2 (en) 2013-03-14 2017-08-15 Sabic Global Technologies B.V. Method of manufacturing a functionally graded article
WO2017154864A1 (fr) * 2016-03-10 2017-09-14 パナソニックＩｐマネジメント株式会社 Matériau ferritique, corps magnétique composite, composant de bobine et bloc d'alimentation
CN108779035A (zh) * 2016-03-10 2018-11-09 松下知识产权经营株式会社 铁氧体材料、复合磁性体、线圈部件以及电源装置
JPWO2017154864A1 (ja) * 2016-03-10 2019-01-10 パナソニックＩｐマネジメント株式会社 フェライト材料、複合磁性体、コイル部品および電源装置
US11222739B2 (en) 2016-03-10 2022-01-11 Panasonic Intellectual Property Management Co., Ltd. Ferrite material, composite magnetic body, coil component, and power supply device

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