CN1227678C - 复合磁性材料及其制造方法 - Google Patents

复合磁性材料及其制造方法 Download PDF

Info

Publication number
CN1227678C
CN1227678C CN03104308.9A CN03104308A CN1227678C CN 1227678 C CN1227678 C CN 1227678C CN 03104308 A CN03104308 A CN 03104308A CN 1227678 C CN1227678 C CN 1227678C
Authority
CN
China
Prior art keywords
magnetic
magnetic material
powder
presintering
particle
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
Application number
CN03104308.9A
Other languages
English (en)
Other versions
CN1435852A (zh
Inventor
梅本卓史
吉川秀树
蔵本庆一
平野均
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CN1435852A publication Critical patent/CN1435852A/zh
Application granted granted Critical
Publication of CN1227678C publication Critical patent/CN1227678C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00Compounds of nickel
    • C01G53/006Compounds containing, besides nickel, two or more other elements, with the exception of oxygen or hydrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00Compounds of iron
    • C01G49/0018Mixed oxides or hydroxides
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00Compounds of iron
    • C01G49/009Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00Compounds of cobalt
    • C01G51/006Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2608Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2633Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605Treating the starting powders individually or as mixtures
    • C04B35/6261Milling
    • C04B35/6262Milling of calcined, sintered clinker or ceramics
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12Magnets 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
    • H01F1/34Magnets 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12Magnets 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
    • H01F1/34Magnets 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
    • H01F1/342Oxides
    • H01F1/344Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12Magnets 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
    • H01F1/34Magnets 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
    • H01F1/342Oxides
    • H01F1/344Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • H01F1/348Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/30Three-dimensional structures
    • C01P2002/32Three-dimensional structures spinel-type (AB2O4)
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/50Solid solutions
    • C01P2002/52Solid solutions containing elements as dopants
    • C01P2002/54Solid solutions containing elements as dopants one element only
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/61Micrometer sized, i.e. from 1-100 micrometer
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/64Nanometer sized, i.e. from 1-100 nanometer
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/42Magnetic properties
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3215Barium oxides or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • C04B2235/3274Ferrites
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3275Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3279Nickel oxides, nickalates, or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3281Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3284Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54Particle size related information
    • C04B2235/5418Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5445Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54Particle size related information
    • C04B2235/5418Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5454Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54Particle size related information
    • C04B2235/5463Particle size distributions
    • C04B2235/5472Bimodal, multi-modal or multi-fraction
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602Making the green bodies or pre-forms by moulding
    • C04B2235/6025Tape casting, e.g. with a doctor blade
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74Physical characteristics
    • C04B2235/76Crystal structural characteristics, e.g. symmetry
    • C04B2235/767Hexagonal symmetry, e.g. beta-Si3N4, beta-Sialon, alpha-SiC or hexa-ferrites
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00Fixed inductances of the signal type 
    • H01F17/0006Printed inductances
    • H01F17/0013Printed inductances with stacked layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus 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
    • H01F41/02Apparatus 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
    • H01F41/04Apparatus 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 for manufacturing coils
    • H01F41/041Printed circuit coils
    • H01F41/046Printed circuit coils structurally combined with ferromagnetic material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256Heavy metal or aluminum or compound thereof
    • Y10T428/257Iron oxide or aluminum oxide
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/32Composite [nonstructural laminate] of inorganic material having metal-compound-containing layer and having defined magnetic layer
    • Y10T428/325Magnetic layer next to second metal compound-containing layer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Power Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Structural Engineering (AREA)
  • Nanotechnology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Composite Materials (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)

Abstract

复合磁性材料,它包含由第一磁性材料制成的第一磁性颗粒和由第二磁性材料制成的第二磁性颗粒,所述的第一磁性颗粒和第二磁性颗粒是相互混合的,并且所述第一磁性材料的频率特性与所述第二磁性材料的频率特性不同,其中所述第一磁性颗粒和第二磁性颗粒的相混,应使在表示第一磁性材料复磁导率实数部分的频率特性曲线与表示第二磁性材料复磁导率实数部分的频率特性的曲线之间交点的频率处,复合磁性材料复磁导率的实数部分值比交点的值大。

Description

复合磁性材料及其制造方法
技术领域
本发明涉及可用于构成诸如手提电话等电子装置的各种电路用的层叠式组合装置以及电感器等的复合磁性材料,并涉及它的制造方法。
背景技术
近年来,对于使小型电子装置如手提电话小型化的需求日益增加。在这种形势下,构成电子装置的多个电路已经集合成为单个芯片上的层叠式组合装置,用以安装到一块主基板上。
图7是层叠式组合装置一个例子的透视图,图8是其分解的透视图。如图7和8所示,层叠式组合装置是由许多片陶瓷层3和4层叠而成。分别包括电感器或电容器的一些电路元件图案11形成在陶瓷层3和4的表面上。电路元件图案11经由形成在陶瓷层3和4上的通孔12或通过形成在陶瓷层3和4上的导体图案相互连接,从而构成诸如滤波器的电路。
已经提出,在陶瓷层3是磁性陶瓷层而陶瓷层4是介电陶瓷层的情况下,将构成电感器的图案(L图案)形成在各磁性陶瓷层3上,而将构成电容器的图案(C图案)形成在各介电陶瓷层4上(日本专利公报No.S60-106114,日本专利公报No.H6-333743等)。
作为用于这种层叠式组合装置和电感器的磁性材料,至今一般使用的是NiCuZn基尖晶石型铁氧体。图9是NiCuZn基尖晶石型铁氧体磁导率的频率特性曲线图。图9中示出了复磁导率的实数部分μ’和虚数部分μ”的归一化值,其中μ’在10兆赫时设定为1。如图9所示,复磁导率的实数部分μ’在高达100兆赫附近的区域中有较高的值。
作为能适合于较高频率的磁性材料,可以有六角晶系铁氧体。六角晶系铁氧体包括晶体结构彼此相似的一些相,如Z型、Y型、W型和M型的相。在这些相中,Z型相显示出较高磁导率,并且在高达千兆赫波段的区域内,其磁导率的减少最小。
图10所示是Z型六角晶系铁氧体磁导率的频率特性图。图10中,复磁导率的实数部分μ’和虚数部分μ”以相对于作为1的NiCuZn基铁氧体初始磁导率(在10兆赫的复磁导率实数部分μ’)的归一化值表示。这对后述的磁导率的频率特性图也是如此。
如图10所示,Z型六角晶系铁氧体在高达千兆赫波段的磁导率增加较小,所以它的高频特性良好。但是,其磁导率比NiCuZn基铁氧体低。
常规的尖晶石铁氧体(如NiCuZn基尖晶石铁氧体),如图9所示,可在高达100兆赫的区域内使用,但在更高频率区域内出现自然共振,使磁导率的实数部分μ’减小,而相反,会使它的虚数部分μ”增加(Snoek界限)。此外,Z型六角晶系铁氧体的问题是其磁导率比NiCuZn基铁氧体低,虽然其磁导率在高达千兆赫波段的降低较小因而高频特性良好。
因此,在现有技术的磁性材料中,难以同时达到磁导率高和高频特性良好这两方面的要求。而且,难以随意设计磁性材料磁导率的数值和频率特性。
发明内容
本发明的目的是提供即使在高频波段内也能呈现出高磁导率的复合磁性材料及其制造方法。
本发明的复合磁性材料包括由第一磁性材料制成的第一磁性颗粒和由第二磁性材料制成的第二磁性颗粒,所述的第一磁性颗粒和第二磁性颗粒是相互混合的,并且所述第一磁性材料的频率特性与所述第二磁性材料的频率特性不同,其中所述第一磁性颗粒和第二磁性颗粒的相混,应使在表示第一磁性材料复磁导率实数部分的频率特性曲线与表示第二磁性材料复磁导率实数部分的频率特性的曲线之间交点的频率处,该复合磁性材料复磁导率的实数部分值比交点的值大。
本发明中,第一磁性颗粒和第二磁性颗粒的相混,应使在上述交点处的频率处,复合磁性材料复磁导率的实数部分值比上述交点的值大。也就是说,在交点处的频率处,磁性材料复磁导率的实数部分的值比第一磁性材料和第二磁性材料复磁导率的实数部分大。这种混合状态可通过将第一磁性颗粒和第二磁性颗粒以细粒的形式相互靠紧,引起第一磁性颗粒与第二磁性颗粒之间的磁交换相互作用来达到。
因此,本发明另一方面的复合磁性材料包括由第一磁性材料制成的第一磁性颗粒和由第二磁性材料制成的第二磁性颗粒,所述的第一磁性颗粒和第二磁性颗粒是相互混合的,并且所述第一磁性颗粒的频率特性与所述第二磁性材料的频率特性不同,其中所述的第一磁性颗粒和第二磁性颗粒的相混应引起所述第一磁性颗粒和第二磁性颗粒之间的磁交换相互作用。
根据本发明,由于在第一磁性颗粒和第二磁性颗粒之间产生磁交换相互作用,因此能获得在高频波段呈现出比第一磁性材料和第二磁性材料更高的磁导率的磁性材料。
如上所述,本发明中,第一磁性颗粒和第二磁性颗粒以细粒的形式均匀混合。因此,第一磁性颗粒和第二磁性颗粒的粒径最好尽可能细小,具体地说,它们各自的平均粒径不大于1微米为好,虽然粒径的下限没有什么限制,但由于很难制成粒径小于1纳米的颗粒,因此平均粒径通常不小于1纳米。平均粒径为10纳米~200纳米更好。磁性颗粒的平均粒径,可用电子显微镜测量适当数量颗粒的粒径来确定。
图2是本发明复合磁性材料中第一磁性颗粒和第二磁性颗粒的混合状态图。如图2所示,第一磁性颗粒1和第二磁性颗粒2均匀混合,其中第二磁性颗粒2存在于第一磁性颗粒1的周围,而第一磁性颗粒1也存在于第二磁性颗粒2的周围。由于第一磁性颗粒1和第二磁性颗粒2的相混使它们彼此靠紧,因此在第一磁性颗粒1与第二磁性颗粒2之间产生了磁交换,从而能在高频波段得到高磁导率。
用铁氧体作为第一磁性材料和第二磁性材料为宜。例如,可用尖晶石型铁氧体作为第一磁性材料和第二磁性材料中的一种,并用六角晶系铁氧体作为第一磁性材料和第二磁性材料中的另一种。还可用包括Ni、Cu和Zn中至少一种元素的磁性材料、以及包括Ba、Sr和Ca中至少一种元素的磁性材料作为磁性材料。
在本发明中,虽然是对第一磁性材料和第二磁性材料作的说明,但用于混合的磁性材料并不限于两种磁性材料,而是可以混合三种或更多种磁性材料。在这种情况下,可认为第一磁性材料和第二磁性材料中的任何一者或两者都由多种磁性材料组成。例如,当用磁性材料B和磁性材料C混合而成的磁性材料作为第二磁性材料时,磁性材料B和磁性材料C应以它们之间不产生磁交换相互作用的程度混合,并确定该混合的磁性材料复磁导率实数部分的频率特性,它可看成是表示第二磁性材料复磁导率实数部分的频率特性的曲线图。不产生磁交换相互作用的混合方式,例如是将磁性材料B与磁性材料C的原料粉末预烧结而成的粉末在研钵中混合的方法。
磁性材料A、磁性材料B和磁性材料C的磁性颗粒的混合,应满足本发明中定义的混合状态,该状态像上述那样用由磁性材料B和磁性材料C构成的第二磁性材料磁导率的频率特性曲线、和由第一磁性材料A构成的第一磁性材料磁导率的频率特性曲线来确定。
在使用三种或更多种磁性材料的情况下,用于构成第一磁性材料或第二磁性材料的磁性材料的混合方式可根据下述方法确定。即,将各磁性材料按照初始磁导率(在10兆赫的复磁导率实数部分μ’)降序排列,并将磁性材料按照初始磁导率的降序合并,直到各磁性材料的混合总百分数达到40重量%或更大,将此看成是第一磁性材料,而其余的磁性材料合并,将此看成是第二磁性材料。例如,在三种磁性材料A、B和C的初始磁导率关系为A>B>C的情况下,采用这种考虑方式。在40重量%的磁性材料A、30重量%的磁性材料B和30重量%的磁性材料C相混的情况下,磁性材料A由于混合百分数达到40重量%以上,所以被看成是第一磁性材料,剩下的磁性材料B和C合并(混合比以重量计为30∶30,即1∶1)看成是第二磁性材料。在30重量%的磁性材料A、30重量%的磁性材料B和40重量%的磁性材料C相混的情况下,由于磁性材料A的混合百分数30重量%,则磁性材料B与磁性材料A的混合提供了60重量%的混合百分数。也就是说,将磁性材料A和磁性材料B合并(混合比以重量计为1∶1)看成是第一磁性材料,而将磁性材料C单独看成是第二磁性材料。
下面是在四种磁性材料A、B、C、D满足初始磁导率关系A>B>C>D的情况下采用的考虑方式。例如,当磁性材料A、B、C和D各自的混合百分数都为25重量%时,将磁性材料A和B合并(混合比以重量计为1∶1)看成是第一磁性材料,将磁性材料C和D合并(混合比以重量计为1∶1)看成是第二磁性材料。在磁性材料A、B、C和D分别以50重量%、30重量%、10重量%和10重量%相混的情况下,将磁性材料A单独看成是第一磁性材料,而磁性材料B、C和D合并(混合比以重量计为3∶1∶1)看成是第二磁性材料。
本发明的制造方法是制造上述本发明复合磁性材料的方法,它包括以下步骤:对包括构成所述第一磁性材料的元素的原料粉末进行预烧结,制成第一预烧结粉末;对包括构成所述第二磁性原料的元素的原料粉末进行预烧结,制成第二预烧结粉末;将所述的第一预烧结粉末和第二预烧结粉末研磨混合,制成复合磁性材料。
根据本发明的该方法,复合磁性材料通过将单独制成的不同种预烧结粉末研磨混合而制成。因此,当使用三种或更多种磁性材料时,可单独制成每种磁性材料的预烧结粉末,并在最后将它们研磨混合。
本发明另一方面的制造方法包括以下步骤:对包括构成所述第一磁性材料的元素的原料粉末、和包括构成所述第二磁性材料的元素的原料粉末进行预烧结,制成第一预烧结粉末和第二预烧结粉末的混合物;将所述的第一预烧结粉末和第二预烧结粉末研磨混合,制成复合磁性材料。
在本发明的该制造方法中,先将各磁性材料的原料粉末混合,并对混合粉末进行预烧结,从而制成各预烧结粉末的混合物,并将预烧结粉末的混合物研磨混合。因此,当使用三种或更多种磁性材料时,先将各磁性材料的原料粉末混合,对所得的粉末混合物进行预烧结,制成预烧结粉末的混合物,并将预烧结粉末的混合物研磨混合。
本发明的成形体的特征在于,它由上述的本发明复合磁性材料、或由本发明制造方法制成的复合磁性材料烧结而成。
本发明的成形体可通过在本发明的复合磁性材料中加入粘合剂、并形成所需形状、然后烧结而制成。或者,可用本发明的复合磁性材料形成生坯基片,在生坯基片的表面上形成预定的电路,然后将各生坯基片层叠起来,经烧结、得到本发明的成形体。
附图说明
图1是本发明实施例复合磁性材料磁导率的频率特性图;
图2是本发明复合磁性材料中第一磁性材料和第二磁性材料的混合状态示意图;
图3是实施例1中复合磁性材料复磁导率的频率特性图;
图4是比较例中复合磁性材料复磁导率的频率特性图;
图5是实施例2中复合磁性材料复磁导率的频率特性图;
图6是实施例3中复合磁性材料复磁导率的频率特性图;
图7是层叠式组合装置一例子的透视图。
图8是层叠式组合装置一例子的分解透视图。
图9是NiCuZn基铁氧体磁导率的频率特性图;
图10是Z型六角晶系铁氧体磁导率的频率特性图
具体实施方式
下面,结合一些实施例更具体地描述本发明,但这些实施例并不用来限制本发明的范围。
实施例1
对均为高纯的BaO、CoO、CuO和Fe2O3称重,使BaO、CoO、CuO和Fe2O3分别占30摩尔%、20摩尔%、15摩尔%和35摩尔%。用罐子和磨球都由氧化锆制的球磨机将称好重的原料研磨混合24小时。之后,在900℃对所得的混合物进行2小时预烧结,获得NiCuZn基铁氧体的预烧结粉末(平均粒径:3微米)。
对均为高纯的BaO、CoO和Fe2O3称重,使BaO、CoO和Fe2O3分别占18摩尔%、12摩尔%和70摩尔%,用罐子和磨球都由氧化锆制的的球磨机将称好重的原料研磨混合24小时。之后,在1300℃对所得的混合物进行2小时预烧结,获得以Ba3Co2Fe24O41表示的Z型六角晶系铁氧体的预烧结粉末(平均粒径:10微米)。
将由此制成的两种预烧结粉末置入罐子和磨球都由氧化锆制的球磨机中,以50重量%:50重量%的混合比研磨混合24小时,得到复合磁性材料。该复合磁性材料的平均粒径为30纳米。
将由此制成的复合磁性材料粉末的一半与PVA(聚乙烯醇)基粘合剂以及有机溶剂一起置入球磨机中,湿混24小时。PVA基粘合剂和有机溶剂的加入量相对于100重量份的磁性材料粉末,分别为4重量份和50重量份。然后,将湿混的粉末干燥并筛分,再将所得粉末成形为外径8毫米、内径4毫米、高度2毫米的环状坯体。在900℃对该环状坯体烧结2小时。用阻抗分析仪测量所得环状试样的磁导率。
图3是磁导率测量结果图。如图3所示,根据本发明得到的复合磁性材料的磁导率的实数部分μ’在高达1千兆赫的区域内呈现出高值。而且,从图中可知,作为损失部分的磁导率虚数部分μ”在高达1千兆赫附近的区域内几乎没有明显增加。这说明实施例1的氧化物磁性材料可在千兆赫波段内使用而损耗较小。
图1是显示图3所示的实施例1中复合磁性材料磁导率的频率特性、图9所示是第一磁性材料-NiCuZn基铁氧体的磁导率的频率特性、和图10所示是第二磁性材料-Z型六角晶系铁氧体的磁导率的频率特性的图。表示NiCuZn基铁氧体复磁导率实数部分的频率特性曲线和表示六角晶系铁氧体复磁导率实数部分的频率特性曲线,相互交叉于交点“μc”。交点“μc”位于稍高于1000兆赫的频率处。在该频率处,实施例1的复合磁性材料复磁导率的实数部分值为“μa”,比交点“μc”的值高。这个高值可能是由于NiCuZn基铁氧体颗粒和六角晶系颗粒之间的磁交换相互作用而获得的。
在上述所得氧化物磁性材料粉末其余的一半中,将5重量%的PVB(聚乙烯醇丁缩醛)基粘合剂与有机溶剂一起加入,然后将其在球磨机中混合,制成浆料。用刮刀法将该浆料制成许多所需厚度的生坯基片。再用印刷方法将银浆印刷在各块生坯基片上,形成所需的无源电路。将许多块这种生坯基片层叠起来,用液压机压紧,然后在900℃下进行显著的烧结,制成层叠式电感器。证实了所得的电感器具有良好的高频特性。
比较例
称取用和实施例1相同的方式制成的均为50重量%的NiCuZn基铁氧体预烧结粉末和六角晶系铁氧体预烧结粉末,和实施例1相同的方式加入粘合剂,然后不用球磨机而是在研钵中将它们混合。将由此制成的混合物形成环状坯体,并用和实施例1相同的方式在900℃烧结。
用和实施例1相同的方式测量由此获得的环状试样的磁导率。图4是比较例中磁性材料磁导率的频率特性图。复磁导率的实数部分在100兆赫附近降低,而虚数部分在100兆赫附近增高。因此,其频率特性与实施例1明显不同。
图1中也示出了比较例中磁性材料复磁导率的实数部分。如图1所示,比较例中磁性材料复磁导率的实数部分处于交点“μc”的频率的值为“μb”,该值比“μc”的值小。
实施例2
在实施例2中,对第一磁性材料和第二磁性材料的原料进行预烧结,制成第一预烧结粉末和第二预烧结粉末的混合物。将该预烧结粉末的混合物研磨混合,制成复合磁性材料。
更具体地说,是对均为高纯的NiO、CuO、ZnO和Fe2O3称重,使NiO、CuO、ZnO和Fe2O3分别占30摩尔%、20摩尔%、15摩尔%和35摩尔%,将所得混合物称为原料粉末A。同样地,对均为高纯的BaO、CoO和Fe2O3称重,使BaO、CoO和Fe2O3分别占20摩尔%、20摩尔%和60摩尔%,将所得混合物称为原料粉末B。
用罐子和磨球都由氧化锆制的的球磨机将原料粉末A和原料粉末B以50重量%:50重量%的比例研磨混合24小时。之后在900℃对所得的混合物进行2小时预烧结,获得预烧结粉末。这种通过预烧结提供的预烧结粉末具有不同于原料粉末A和原料粉末B的组成。然后,用罐子和磨球都由氧化锆制的的球磨机将将该预烧结粉末的混合物研磨混合24小时。结果,获得了包含NiCuZn基铁氧体粉末和以BaCo2Fe12O22表示的Y型六角晶系铁氧体粉末在内的复合磁性材料。NiCuZn基铁氧体的平均粒径为20纳米,Y型六角晶系铁氧体的平均粒径为30纳米。
使用以上述方式获得的复合磁性材料粉末,用和实施例1相同的方式制成环状试样,并测量它的磁导率。
图5是磁导率的频率特性图。如图5所示,实施例2中复合磁性材料复磁导率的实数部分μ’在高达100兆赫的区域内呈现出高值。图5中,示出了NiCuZn基铁氧体复磁导率实数部分的曲线与Y型六角晶系铁氧体复磁导率实数部分的曲线的交点“μc”  。在交点“μc”处的频率处,实施例2的复合磁性材料呈现出高值。
实施例3
在实施例3中,用三种磁性材料制成本发明的复合磁性材料。
用和实施例1相同的方式制得NiCuZn基铁氧体的预烧结粉末和Z型六角晶系铁氧体的预烧结粉末。
此外,对均为高纯的BaO、CoO和Fe2O3称重,使BaO、CoO和Fe2O3分别占20摩尔%、20摩尔%、60摩尔%,经混合制成原料粉末。用罐子和磨球都由氧化锆制的的球磨机将该原料粉末研磨混合24小时。然后,在1100℃进行2小时预烧结,获得以Ba2Co2Fe12O22表示的Y型六角晶系铁氧体的预烧结粉末(平均粒径:7微米)。
将上述三种预烧结粉末以50重量%NiCuZn基铁氧体、30重量%Z型六角晶系铁氧体和20重量%Y型六角晶系铁氧体的混合比置入罐子和磨球都由氧化锆制的球磨机中,在该球磨机中于磨碎的同时混合24小时。然后,加入PVA基粘合剂和有机溶剂,并用球磨机湿混24小时。此后,用和实施例1相同的方式制成环状试样。根据X-射线衍射的峰强确定由此获得的环状试样中各相的量,结果显示,存在29重量%的Z型和19重量%的Y型。然后测定该环状试样的磁导率。
图6是磁导率的频率特性图。如图6所示,此实施例中复合磁性材料复磁导率的实数部分μ’也在高达1000兆赫的区域内呈现出高值。图6中还示出了NiCuZn基铁氧体复磁导率实数部分的频率特性曲线与上述两种经预烧结的六角晶系铁氧体(重量比Z型∶Y型=30∶20)复磁导率实数部分的频率特性曲线的交点“μc”。将这两种经预烧结的六角晶系铁氧体粉末在研钵中混合,并在图6中示出了该混合物复磁导率实数部分的频率特性。
如图6所示,在交点“μc”处的频率处,实施例3的复合磁性材料呈现出比交点“μc”高的值。
根据本发明,可提供在高波段也能呈现出高磁导率的复合磁性材料。根据本发明,由于不同磁性材料的混合,以及能随意改变它们的混合比,因此还能随意设计磁导率的数值和频率特性。因此,本发明的复合磁性材料可以用作用于层叠式电感器、LC(液晶)滤波器、RF(射频)组件等的磁性材料,还能用作电磁消波器。
在上述一些例子中显示的磁导率频率特性表示到直至2千兆赫附近,但本发明的复合磁性材料可在更高频波段(例如5千兆赫到10千兆赫)中使用。

Claims (8)

1.复合磁性材料,它包含由第一磁性材料制成的第一磁性颗粒和由第二磁性材料制成的第二磁性颗粒,所述的第一磁性颗粒和第二磁性颗粒是相互混合的,并且所述第一磁性材料的频率特性与所述第二磁性材料的频率特性不同,
其特征在于,所述的第一磁性材料是尖晶石型铁氧体,所述的第二磁性材料是六角晶系铁氧体,所述的第一磁性材料和第二磁性材料各自的平均粒径不大于1微米,所述第一磁性颗粒和第二磁性颗粒的相混,使在表示第一磁性材料复磁导率实数部分的频率特性曲线与表示第二磁性材料复磁导率实数部分的频率特性的曲线之间交点的频率处,复合磁性材料复磁导率的实数部分值比该交点的值大。
2.复合磁性材料,它包含由第一磁性材料制成的第一磁性颗粒和由第二磁性材料制成的第二磁性颗粒,所述的第一磁性颗粒和第二磁性颗粒是相互混合的,并且所述第一磁性颗粒的频率特性与所述第二磁性材料的频率特性不同,
其特征在于,所述的第一磁性材料是尖晶石型铁氧体,所述的第二磁性材料是六角晶系铁氧体,所述的第一磁性材料和第二磁性材料各自的平均粒径不大于1微米,所述的第一磁性颗粒和第二磁性颗粒的相混引起所述第一磁性颗粒和第二磁性颗粒之间的磁交换相互作用。
3.权利要求1所述的复合磁性材料的制造方法,它包括以下步骤:
对包括构成所述第一磁性材料的元素的原料粉末进行预烧结,制成第一预烧结粉末;
对包括构成所述第二磁性原料的元素的原料粉末进行预烧结,制成第二预烧结粉末;
将所述的第一预烧结粉末和第二预烧结粉末研磨混合,制成复合磁性材料。
4.权利要求1所述的复合磁性材料的制造方法,它包括以下步骤:
对包括构成所述第一磁性材料的元素的原料粉末和包括构成所述第二磁性材料的元素的原料粉末进行预烧结,制成第一预烧结粉末和第二预烧结粉末的混合物;
将所述的第一预烧结粉末和第二预烧结粉末研磨混合,制成复合磁性材料。
5.成形体,它由权利要求1所述的复合磁性材料烧结而成。
6、权利要求2的复合磁性材料的制造方法,它包括以下步骤:
对包括构成所述第一磁性材料的元素的原料粉末进行预烧结,制成第一预烧结粉末;
对包括构成所述第二磁性原料的元素的原料粉末进行预烧结,制成第二预烧结粉末;
将所述的第一预烧结粉末和第二预烧结粉末研磨混合,制成复合磁性材料。
7.权利要求2所述的复合磁性材料的制造方法,它包括以下步骤:
对包括构成所述第一磁性材料的元素的原料粉末和包括构成所述第二磁性材料的元素的原料粉末进行预烧结,制成第一预烧结粉末和第二预烧结粉末的混合物;
将所述的第一预烧结粉末和第二预烧结粉末研磨混合,制成复合磁性材料。
8.成形体,它由权利要求2所述的复合磁性材料烧结而成。
CN03104308.9A 2002-02-01 2003-01-30 复合磁性材料及其制造方法 Expired - Fee Related CN1227678C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002025357A JP3744859B2 (ja) 2002-02-01 2002-02-01 成形体及びその製造方法
JP200225357 2002-02-01

Publications (2)

Publication Number Publication Date
CN1435852A CN1435852A (zh) 2003-08-13
CN1227678C true CN1227678C (zh) 2005-11-16

Family

ID=27654529

Family Applications (1)

Application Number Title Priority Date Filing Date
CN03104308.9A Expired - Fee Related CN1227678C (zh) 2002-02-01 2003-01-30 复合磁性材料及其制造方法

Country Status (3)

Country Link
US (2) US6893581B2 (zh)
JP (1) JP3744859B2 (zh)
CN (1) CN1227678C (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4204329B2 (ja) * 2002-01-21 2009-01-07 三洋電機株式会社 酸化物磁性材料の製造方法
JP3744859B2 (ja) * 2002-02-01 2006-02-15 三洋電機株式会社 成形体及びその製造方法
KR101105595B1 (ko) * 2008-08-13 2012-01-18 주식회사 이엠따블유 페라이트 제조방법
JP5161813B2 (ja) * 2008-10-10 2013-03-13 Dowaエレクトロニクス株式会社 混合フェライト粉およびその製造方法、並びに、電波吸収体
DE102009027091A1 (de) * 2009-06-23 2011-02-17 Evonik Degussa Gmbh Thermisch aktivierbare Radikalstarter und magnetische Partikel enthaltendes Kompositmaterial
KR20110048717A (ko) * 2009-11-03 2011-05-12 주식회사 이엠따블유 자성체 복합물 및 그 제조방법
JP5134696B2 (ja) * 2010-03-18 2013-01-30 日本碍子株式会社 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
US8609062B2 (en) 2010-12-07 2013-12-17 Skyworks Solutions, Inc. Specialty materials processing techniques for enhanced resonant frequency hexaferrite materials for antenna applications and other electronic devices
JP6081051B2 (ja) * 2011-01-20 2017-02-15 太陽誘電株式会社 コイル部品
JP2015524162A (ja) * 2012-05-10 2015-08-20 イーエムダブリュ カンパニー リミテッド 磁性シート、磁性シートの製造方法、及び磁性シートを備えたアンテナ
CN103664127B (zh) * 2012-09-05 2016-03-02 深圳先声科技发展有限公司 能衰减和吸收电磁波的吸波宝石及制造方法
US10027035B2 (en) 2014-09-30 2018-07-17 Skyworks Solutions, Inc. Modified Z-type hexagonal ferrite materials with enhanced resonant frequency
US10049796B2 (en) 2014-10-24 2018-08-14 Skyworks Solutions, Inc. Magnetodielectric Y-phase strontium hexagonal ferrite materials formed by sodium substitution
CN105669179B (zh) * 2015-12-30 2018-08-17 安泰科技股份有限公司 超薄磁屏蔽片材料及其制备方法
JP7187136B2 (ja) * 2017-05-30 2022-12-12 昭和電工マテリアルズ株式会社 シート
US20190354154A1 (en) * 2018-05-18 2019-11-21 Hewlett Packard Enterprise Development Lp Inductors

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60106114A (ja) 1983-11-14 1985-06-11 Matsushita Electric Ind Co Ltd インダクタの製造方法
US4855205A (en) * 1988-08-05 1989-08-08 Eastman Kodak Company Interdispersed two-phase ferrite composite and carrier therefrom
JPH05144615A (ja) 1991-04-18 1993-06-11 Toshiba Corp 磁気記録用磁性粉およびそれを用いた磁気記録媒体
US5494749A (en) * 1991-04-18 1996-02-27 Kabushiki Kaisha Toshiba Magnetic powder for magnetic recording and magnetic recording medium containing the same
JPH05206676A (ja) 1992-01-27 1993-08-13 Nec Corp 電波吸収体
JPH06333743A (ja) 1993-05-20 1994-12-02 Murata Mfg Co Ltd 積層チップコイルおよびその製造方法
JPH07254506A (ja) 1994-03-16 1995-10-03 Toshiba Corp 磁性粉末及びその製造方法
JPH07335417A (ja) 1994-06-14 1995-12-22 Toshiba Corp 磁性粉末
JPH09115728A (ja) 1995-10-16 1997-05-02 Toshiba Glass Co Ltd 複合型六方晶系フェライト磁性粉およびその製造方法
JP4647731B2 (ja) * 1997-09-19 2011-03-09 Tdk株式会社 磁石粉末、焼結磁石、それらの製造方法、ボンディッド磁石および磁気記録媒体
JPH11307336A (ja) 1998-04-16 1999-11-05 Tdk Corp 軟磁性フェライトの製造方法
JP2001156487A (ja) 1999-11-26 2001-06-08 Kyocera Corp 電波吸収体及びその製造方法
CN1156751C (zh) 2001-02-02 2004-07-07 国际商业机器公司 用于自动生成语音xml文件的方法和系统
JP2002313618A (ja) * 2001-02-07 2002-10-25 Sumitomo Special Metals Co Ltd 永久磁石、およびその製造方法
CN1174443C (zh) 2001-07-19 2004-11-03 清华同方股份有限公司 制备甚高频片感器材料的方法
JP2003221232A (ja) 2002-01-30 2003-08-05 Koa Corp フェライト材料およびその製造方法
JP3744859B2 (ja) * 2002-02-01 2006-02-15 三洋電機株式会社 成形体及びその製造方法

Also Published As

Publication number Publication date
CN1435852A (zh) 2003-08-13
US7101489B2 (en) 2006-09-05
JP3744859B2 (ja) 2006-02-15
US20050230656A1 (en) 2005-10-20
US6893581B2 (en) 2005-05-17
JP2003229307A (ja) 2003-08-15
US20030148094A1 (en) 2003-08-07

Similar Documents

Publication Publication Date Title
CN1227678C (zh) 复合磁性材料及其制造方法
US8101536B2 (en) Glass-free microwave dielectric ceramics and the manufacturing method thereof
CN101037326A (zh) 铁氧体烧结体和其制造方法
WO2007074606A1 (ja) フォルステライト粉末の製造方法、フォルステライト粉末、フォルステライト焼結体、絶縁体セラミック組成物、および積層セラミック電子部品
CN1227185C (zh) 氧化物磁性材料的制造方法和氧化物磁性材料
US10383220B2 (en) Ceramic substrate and method for production thereof
CN1205620C (zh) 高频介电陶瓷成份及其介电器件
KR100546993B1 (ko) 유전체 세라믹용 원료 분말의 제조 방법, 유전체 세라믹및 적층 세라믹 커패시터
CN100351203C (zh) 陶瓷基板用组合物、陶瓷基板、陶瓷基板的制造方法及玻璃组合物
CN1218330C (zh) 氧化物磁性材料的制造方法和氧化物磁性材料
US7205254B2 (en) Dielectric ceramic composition and multilayer ceramic part
JP2802173B2 (ja) 複合誘電体
CN1544391A (zh) 低温叠层共烧的介电陶瓷和铁氧体及其制备方法
JP7384189B2 (ja) 積層型コイル部品
JP5106350B2 (ja) 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
JP4000012B2 (ja) 酸化物磁性材料及びその製造方法
JP2740357B2 (ja) プリント回路用基板
CN1324080A (zh) 层叠式电子组件
JP2010100511A (ja) 磁性体と誘電体との複合焼結体およびlc複合電子部品
TW499399B (en) Ferrite with high-permittivity and high dielectric coefficient and method for producing the same
CN1523616A (zh) 防止电磁干扰的组合式滤波元件及其制造工艺
JP4830259B2 (ja) 積層セラミック電子部品の製造方法
JP2002100510A (ja) 低誘電率磁性体磁器材料及びその製造方法
CN114242417A (zh) 层叠型线圈部件
JP2005123460A (ja) 多層セラミック基板の製造方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20051116

Termination date: 20120130