EP3281212A1 - Composite magnétique doux et procédé correspondant pour fabriquer un composite magnétique doux - Google Patents

Composite magnétique doux et procédé correspondant pour fabriquer un composite magnétique doux

Info

Publication number
EP3281212A1
EP3281212A1 EP16710976.8A EP16710976A EP3281212A1 EP 3281212 A1 EP3281212 A1 EP 3281212A1 EP 16710976 A EP16710976 A EP 16710976A EP 3281212 A1 EP3281212 A1 EP 3281212A1
Authority
EP
European Patent Office
Prior art keywords
soft magnetic
solid
metallic glass
magnetic composite
pure iron
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.)
Withdrawn
Application number
EP16710976.8A
Other languages
German (de)
English (en)
Inventor
Alexandra Wilde
Inga Schellenberg
Jens BURGHAUS
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3281212A1 publication Critical patent/EP3281212A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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

Definitions

  • Soft magnetic composite material and corresponding method for producing a soft magnetic composite material.
  • the present invention provides a soft magnetic composite and corresponding methods of making a soft magnetic
  • a soft magnetic composite which has a combination of high saturation polarization, low coercive force, high permeability, low eddy current loss and mechanical stability.
  • a soft magnetic composite is required, which has a combination of high saturation polarization, low coercive force, high permeability, low eddy current loss and mechanical stability.
  • the invention provides a soft magnetic composite material
  • the present invention enables a soft magnetic
  • Composite having a combination of high saturation polarization, low coercivity, high permeability, low eddy current loss, and mechanical stability.
  • the required properties are in particular high permeability and low coercive field strength with respect to the soft magnetic property, low eddy current loss by a high electrical
  • the soft magnetic composite described here combines these properties and can preferably be used in applications with high frequencies.
  • the idea here is to provide a soft magnetic composite having a plurality of crystalline pure iron base particles and a bulk metallic glass (BMG), wherein the plurality of crystalline pure iron base particles include, for example, a continuous and / or homogeneous solid state coating have metallic glass can.
  • BMG bulk metallic glass
  • the large number of crystalline pure iron base particles for example indirectly, can be in contact with one another via the coating of the solid-metal glass.
  • a matrix forms, with spaces between the crystalline ones
  • Pure iron base particles are filled with the solid-metallic glass.
  • the soft magnetic composite described here has a higher mechanical strength.
  • the solid-metallic glass made possible by a surface or
  • Composite material between 60% and 99% crystalline pure iron-based particles and a proportion of the solid-metallic glass (Gl) is correspondingly between 1% and 40%.
  • the solid-metallic glass is based on an iron or zirconium alloy powder with phosphorus, boron, cobalt and / or niobium, wherein the alloy powder between 70% and 95% iron or zirconium and the proportion of phosphorus, boron, cobalt and / or niobium accordingly between 5% and 30% of the alloy powder.
  • This is an exemplary non-exhaustive list of elements, in particular other elements, for example silicon, nickel, silver and / or chromium correspondingly for the materials described here in question. It is advantageous that by a percentage of the plurality of crystalline
  • the coating of the solid-metallic glass is a high-resistance coating.
  • the high-resistance coating has a value of greater than 0.5 micro ohmmeter [ ⁇ ]. Due to the high-resistance coating can be used in a dynamic application, for example at high frequencies or high rotational speeds
  • the soft magnetic composite described herein has improved plastic deformability which the solid metallic glass alone does not have.
  • the plurality of crystalline pure iron base particles is a water-atomized or gas-atomized iron powder.
  • Verdüsungsart that is water atomized or gas atomized, a texture, in particular a surface texture, of the iron powder or iron particles can be influenced.
  • alternative particle shapes of the iron powder are thus available which particularly preferably form the soft-magnetic composite material with the solid-metallic glass described here.
  • Particle size of the crystalline pure iron base particle between 30 and 500 microns, preferably between 50 and 300 microns.
  • Particle size is understood in the present context to mean the particle diameter.
  • a particularly homogeneous mixing of the solid-metallic glass with the plurality of crystalline pure iron-based particles can be achieved with the average particle sizes described here.
  • the soft magnetic composite material described here can in particular be produced by two alternative methods.
  • the first alternative method has the following steps:
  • soft magnetic composite material includes.
  • the mixture is poured into a predetermined shape before cooling, injected or pressed.
  • the mixture may be granulated prior to cooling and then pressed or injected into a predetermined shape.
  • the soft magnetic composite material can be brought into a desired shape.
  • the second method alternative also has the following steps:
  • the powder is mixed with a plurality of crystalline pure iron base particles, the resulting mixture is pressed into the predetermined shape and the mixture is heated to a temperature, wherein the temperature is above a glass transition temperature and below the crystallization temperature. As the mixture is heated, the layer of solid-metallic glass forms on the plurality of crystalline ones
  • Glass transition temperature between 200 ° C and 600 ° C, preferably between 400 ° C and 600 ° C. At these temperatures, the method described here can be carried out particularly economically.
  • Fig. 1 is a schematic representation for explaining a
  • FIG. 2 shows a schematic representation of a method for producing a soft-magnetic composite material according to FIG. 1;
  • Fig. 3 is a schematic alternative representation of a method for
  • Fig. 1 shows a schematic representation for explaining a
  • Reference VI indicates a soft magnetic composite VI.
  • the soft magnetic composite VI has a plurality of crystalline pure iron-based particles El and a solid-metallic glass G1.
  • the plurality of crystalline pure iron base particles El has a coating of the solid-metallic glass Gl, wherein the plurality of crystalline
  • the solid-metallic glass Gl is formed on an outer surface Al of the crystalline pure iron-based particles El. This means that, via the solid-metallic glass G 1, mutually adjacent crystalline pure iron-base particles can be joined via the solid-metallic glass G 1, in particular indirectly. In other words, a gap ZI between the crystalline pure iron base particles El is filled by the solid-metallic glass G, wherein a solid-metallic
  • the plurality of crystalline pure iron base particles El can be present in the form of a water atomized or gas atomized iron powder.
  • the coating of the solid-metallic glass G 1 shown in FIG. 1 may in particular be a high-resistance coating.
  • a particle size of the crystalline iron-iron-based particles El may be between 30 and 500 micrometers, preferably between 50 and 300 micrometers.
  • FIG. 2 shows a schematic representation of a method for producing a soft-magnetic composite material according to FIG. 1.
  • Method steps A to D can be carried out in particular according to the sequence shown in FIG. 2. This has the advantage that the solid-metallic glass El can in particular evenly or homogeneously distribute in the intermediate spaces ZI of the soft magnetic composite material.
  • the mixture prepared in step D can in particular be cast, initiated or pressed into a predetermined shape.
  • the mixture may be pelletized prior to step D and then the pellets may be pressed or initiated into a predetermined shape.
  • FIG. 3 shows a schematic alternative representation of a method for producing a soft-magnetic composite material according to FIG. 1.
  • the steps A1, B1, C1, D1, E1 and F1 relate to the method steps of claim 9. Those shown in FIG. 3
  • Method steps AI to Fl can be carried out in particular according to the sequence shown in FIG. 3.
  • Embodiment has been described, it is not limited thereto.

Landscapes

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

Abstract

L'invention concerne un composite magnétique doux. Le composite magnétique doux comprend une pluralité de particules cristallines à base de fer pur (E1) et un verre métallique massif (G1), la pluralité des particules cristallines à base de fer pur (E1) comprenant un revêtement fait du verre métallique massif (G1) et la pluralité des particules cristallines à base de fer pur (E1) étant en contact les unes avec les autres par l'intermédiaire du revêtement en verre métallique massif (G1). L'invention concerne également deux procédés en variante pour la fabrication d'un composite magnétique doux.
EP16710976.8A 2015-04-09 2016-03-18 Composite magnétique doux et procédé correspondant pour fabriquer un composite magnétique doux Withdrawn EP3281212A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015206326.7A DE102015206326A1 (de) 2015-04-09 2015-04-09 Weichmagnetischer Verbundwerkstoff und entsprechende Verfahren zum Herstellen eines weichmagnetischen Verbundwerkstoffs
PCT/EP2016/056025 WO2016162188A1 (fr) 2015-04-09 2016-03-18 Composite magnétique doux et procédé correspondant pour fabriquer un composite magnétique doux

Publications (1)

Publication Number Publication Date
EP3281212A1 true EP3281212A1 (fr) 2018-02-14

Family

ID=55587281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16710976.8A Withdrawn EP3281212A1 (fr) 2015-04-09 2016-03-18 Composite magnétique doux et procédé correspondant pour fabriquer un composite magnétique doux

Country Status (4)

Country Link
EP (1) EP3281212A1 (fr)
CN (1) CN107533906B (fr)
DE (1) DE102015206326A1 (fr)
WO (1) WO2016162188A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT521006B1 (de) * 2018-01-24 2021-08-15 Miba Sinter Austria Gmbh Verfahren zum Herstellen eines Bauteils mit weichmagnetischen Eigenschaften
EP3719958A1 (fr) * 2019-04-03 2020-10-07 Siemens Aktiengesellschaft Matériau composite magnétique doux pour machines électriques

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE47529E1 (en) * 2003-10-01 2019-07-23 Apple Inc. Fe-base in-situ composite alloys comprising amorphous phase
JP2008108760A (ja) * 2006-10-23 2008-05-08 Sumitomo Electric Ind Ltd 圧粉磁心および圧粉磁心の製造方法
US8911663B2 (en) * 2009-03-05 2014-12-16 Quebec Metal Powders, Ltd. Insulated iron-base powder for soft magnetic applications
JP6036801B2 (ja) * 2012-02-17 2016-11-30 Tdk株式会社 軟磁性圧粉磁芯

Also Published As

Publication number Publication date
CN107533906B (zh) 2020-08-04
DE102015206326A1 (de) 2016-10-13
CN107533906A (zh) 2018-01-02
WO2016162188A1 (fr) 2016-10-13

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