EP0503081B1 - Magnetkern - Google Patents

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Publication number
EP0503081B1
EP0503081B1 EP91916787A EP91916787A EP0503081B1 EP 0503081 B1 EP0503081 B1 EP 0503081B1 EP 91916787 A EP91916787 A EP 91916787A EP 91916787 A EP91916787 A EP 91916787A EP 0503081 B1 EP0503081 B1 EP 0503081B1
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EP
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Prior art keywords
magnetic
ribbon
electrical insulating
magnetic core
magnetic material
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EP91916787A
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English (en)
French (fr)
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EP0503081A1 (de
EP0503081A4 (en
Inventor
Masami Okamura
Takao Kusaka
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Toshiba Corp
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Toshiba Corp
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    • 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
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
    • 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
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15383—Applying coatings thereon
    • 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
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/04—Cores, Yokes, or armatures made from strips or ribbons

Definitions

  • the present invention relates to a magnetic core used in apparatuses such as pulse generators and transformers, and more particularly, to a magnetic core used in a large electric power such as a magnetic core for a high output pulse.
  • Magnetic pulse compression circuits adapted for generating a pulse having a high output and a short pulse duration have been used in pulse power source apparatuses used in lasers and particle accelerators.
  • the magnetic pulse compression circuits compress a current pulse duration utilizing a saturation characteristic of a saturable magnetic core when the charge of a capacitor is shifted to a capacitor of a next stage.
  • An induction magnetic core of a linear accelerator essentially operates as a 1:1 transformer and accelerates a charged particle beam which passes through the central portion of the magnetic core by means of a voltage generated in a secondary gap.
  • magnetic cores for high output pulse there have been used magnetic cores wherein magnetic material ribbons such as iron-base amorphous alloy ribbons or cobalt-base amorphous alloy ribbons having characteristics such as high saturation magnetic flux density, a high squareness ratio of a magnetization curve and a low core loss and electrical insulating materials composed of a polymeric film such as a polyester film or polyimide film are alternately wound.
  • magnetic material ribbons such as iron-base amorphous alloy ribbons or cobalt-base amorphous alloy ribbons having characteristics such as high saturation magnetic flux density, a high squareness ratio of a magnetization curve and a low core loss and electrical insulating materials composed of a polymeric film such as a polyester film or polyimide film are alternately wound.
  • an insulating property between magnetic material ribbons is important because the magnetic cores are used in high output pulse applications. Therefore in the prior art in order to ensure layer insulation between magnetic material ribbon edges, the electrical insulating materials and the magnetic material ribbons have been set so that the width of the electrical insulating materials is wider than the width of the magnetic material ribbons.
  • FIG. 2 which is a schematic view of a cross-section of the prior art magnetic core
  • the edges of an electrical insulating material 2 projects from the edges of a magnetic material ribbon 1.
  • the electrical insulating material 2 has a low heat conduction property and therefore the space between the projected portions of the electrical insulating material 2 can be a thermal insulation layer 3. Accordingly, an effect of cooling on the heat generation of magnetic cores in use, in other words, the heat generation of magnetic material ribbons is reduced and thus the temperature of the magnetic cores can rise.
  • the temperature rise of the magnetic cores can result in the reduction of the magnetic flux of the magnetic cores and the acceleration of secular change of characteristics and there is inevitably occurred a problem that specific functions are not obtained.
  • An object of the present invention is to solve the problems described above and provide a magnetic core having an excellent cooling characteristic.
  • a magnetic core of the present invention is a magnetic core obtainable by laminating or winding a magnetic material ribbon and an electrical insulating material wherein it has the relationship of 0.5a ⁇ b ⁇ a in which the width of said magnetic material ribbon is "a”, and the width of said electrical insulating material is "b".
  • magnetic alloy ribbons project by using the width of electrical insulating materials 2 less than the width of magnetic material ribbons 1 and the contact area of the magnetic alloy ribbons 1 to a coolant is increased.
  • a heat removal property of heat due to heat generation of magnetic cores in use, i.e., heat generation of the magnetic material ribbons is improved.
  • the width "b” of an electrical insulating material in order to improve contact area of magnetic material ribbon to coolant such as air, insulating oils, fluorine-containing inert liquids, the width "b" of an electrical insulating material must be less than the width "a” of a magnetic material ribbon. If the width is too narrow, the spacing between layers becomes narrow due to the deflection occurred when the thickness of the magnetic material ribbons is thin. When a high voltage is applied, a short-circuit is liable to be generated, and therefore the width "b" of the electrical insulating material is from 0.5 "a” to less than "a” for the width "a” of the magnetic material ribbon from the standpoint of short-circuit prevention.
  • the width "b" of the electrical insulating material is from 0.9 “a” to less than “a”. More preferably, the width "b" of the electrical insulating material is from 0.95 “a” to less than "a”.
  • both edges in a width direction of the magnetic material ribbon 1 project from both edges in a width direction of the electrical insulating material 2.
  • the widths of the magnetic material ribbons and the electrical insulating materials in the case of magnetic cores obtained by laminating the magnetic material ribbons and the electrical insulating materials are 1/2 of the difference in outer diameter and inner diameter of each material.
  • the reduction of layer insulation property in ribbon edges due to the fact that the width of the electrical insulating materials is less than the width of the magnetic alloy ribbon can be compensated by insulation property of coolant for magnetic cores such as air, insulating oils and fluorine-containing inert liquids present in ribbon edges. If necessary, an insulation property is further improved by increasing the thickness of the electrical insulating materials.
  • the material from which the magnetic material ribbon of the present invention is produced are not particularly limited provided that the magnetic material and the electrical insulating material can be laminated or wound to form magnetic cores.
  • iron-base amorphous alloys, cobalt-base amorphous alloys or iron-base magnetic alloys obtained by crystallizing an iron-base amorphous alloy and depositing fine grains have excellent magnetic characteristics and therefore they are preferred.
  • iron-base amorphous alloys represented by the general formula: Fe 100-y X y [at.%] 14 ⁇ y ⁇ 21 wherein X is one or more elements selected from Si, B, P, C and Ge have a high saturation magnetic flux density and therefore they are preferred.
  • X is Si or B
  • the amount of Si be from 7 to 14 at.%
  • the amount of B be from 11 to 15 at.%.
  • iron-base amorphous alloys represented by the general formula: (Fe 1-x M x ) 100-y X y [at.%] 0 ⁇ x ⁇ 0.4 14 ⁇ y ⁇ 21 wherein M is one or two elements selected from Co and Ni, and X is one or more elements selected from Si, B, P, C and Ge and wherein a portion of Fe is substituted with Co and/or Ni are particularly preferred because high saturation magnetic flux density and high squareness ratio are obtained.
  • magnetic characteristic can be improved by further adding not more than 5 at.% of elements such as Ti, Ta, V, Cr, Mn, Cu, Mo, Nb and W.
  • cobalt-base amorphous alloys represented by the general formula: (Co 1-x Fe x ) 100-z (Si 1-y B y ) z 0.02 ⁇ x ⁇ 0.1 0.3 ⁇ y ⁇ 0.9 20 ⁇ z ⁇ 30 have a high squareness ratio and a low core loss and therefore they are particularly preferred.
  • a magnetic characteristic can be further improved by further adding not more than 8 at.% of elements such as Ti, Ta, V, Cr, Mn, Cu, Mo, Nb and W. Of these, Mn, Ni, Mo, and Nb are particularly preferred from the standpoint of a low core loss.
  • Fe-base magnetic alloys obtained by crystallizing an iron-base amorphous alloy and depositing fine grains
  • Fe-base soft magnetic alloys having the composition represented by the following general formula: (Fe 1-a M a ) 100-x-y-z- ⁇ - ⁇ - ⁇ Cu x Si y B z M - ⁇ M -- ⁇ X ⁇ 0 ⁇ a ⁇ 0.5 0.1 ⁇ x ⁇ 3 0 ⁇ y ⁇ 30 0 ⁇ z ⁇ 25 0 ⁇ y+z ⁇ 35 0.1 ⁇ ⁇ ⁇ 30 0 ⁇ ⁇ ⁇ 10 0 ⁇ ⁇ 10 wherein M is one or two elements selected from Co and Ni, and M - is one or more elements selected from Nb, W, Ta, Zr, Hf, Ti and Mo, M -- is one or more elements selected from V, Cr, Mn, Al, platinum group metals, Sc, Y, rare earth elements, Au, Zn, Sn and Re, and
  • the amorphous alloy ribbons having the composition described above can be easily produced by applying, for example, methods such as a melt quenching method to alloys having a specific composition. Further, while the thickness of the magnetic material ribbon using these materials is not particularly limited, the thickness of the magnetic material ribbon is preferably, for example, from 3 to 40 ⁇ m and more preferably from 6 to 28 ⁇ m.
  • the materials from which the electrical insulating material is produced are not particularly limited, polyester films are inexpensive and therefore they are preferred.
  • Polyimide films have excellent heat-resistance and a polyimide film/magnetic material ribbon assembly can be heat treated and therefore, for example, magnetic material ribbons and polyimide films can be alternately wound or laminated and thereafter heat treated. Therefore the polyimide films are preferred.
  • the thickness of the electrical insulating material is not particularly limited, it is preferred that the thickness of the electrical insulating material be from 1.5 to 50 ⁇ m from the standpoint of the insulation property. More preferably, the thickness of the electrical insulating material is from 1.5 to 30 ⁇ m.
  • the magnetic core according to the present invention can be produced by the following process.
  • magnetic material ribbons and electrical insulating materials having a specific composition and shape are alternately wound in a conventional method.
  • the punched product obtained by punching magnetic material ribbons having a specific composition into a specific shape in a conventional method and electrical insulating materials are alternately laminated.
  • Heat treatment is optionally applied.
  • the magnetic characteristics such as squareness ratio of the resulting magnetic cores can be improved by heat treating in a direct-current or alternating-current magnetic field.
  • the cobalt-base amorphous alloys are used as the magnetic material ribbons, the composition capable of realizing a relatively high squareness ratio after melt quenching is present and therefore they can be used without applying any heat treatment.
  • the squareness ratio of the resulting magnetic cores is improved as when a magnetic formed product is heat treated in a magnetic field.
  • the size of the magnetic field is preferably of the order of 0.5 to 110 Oe and more preferably of the order of 5 to 20 Oe.
  • combinations of the magnetic material ribbons and the electrical insulating materials can be appropriately selected depending upon required characteristics. For example, in uses wherein electrical insulating property is required, two or more layers of the electrical insulating material are used. In uses wherein magnetic characteristic is particularly required, two or more layers of the magnetic material ribbon can be used.
  • magnetic cores of the present invention are not limited provided that heat generation occurs in use in the magnetic cores wherein the magnetic material ribbons and the electrical insulating materials are alternately laminated or wound, they are particularly effective for magnetic cores used in a large electric power such as pulse generators and transformers used in lasers, particle accelerators and the like.
  • Amorphous alloy ribbons and electrical insulating materials having the compositions and shapes shown in Table 1 were used and they were alternately wound to form wound magnetic cores having an outer diameter of 200 mm and an inner diameter of 100 mm.
  • the wound magnetic cores obtained were heat treated for 30 minutes at 420°C, and thereafter heat treated for 1 hour at a constant temperature of 200°C in a direct-current constant magnetic field of 1 Oe.
  • Amorphous alloy ribbons and electrical insulating materials having the compositions and shapes shown in Table 1 were used and they were alternately wound to form wound magnetic cores having an outer diameter of 230 mm and an inner diameter of 100 mm.
  • the wound magnetic cores obtained were heat treated for 30 minutes at 420°C, and thereafter heat treated for 1 hour at a constant temperature of 200°C in a direct-current constant magnetic field of 1 Oe.
  • Amorphous alloy ribbons having the compositions and shapes shown in Table 1 were alternately wound to form wound magnetic cores having an outer diameter of 200 mm and an inner diameter of 100 mm.
  • the wound magnetic cores obtained were heat treated for 2 hours at a constant temperature of 400°C in a direct-current constant magnetic field of 1 Oe.
  • amorphous alloy ribbons having the compositions and shapes shown in Table 1 were alternately wound to form wound magnetic cores having an outer diameter of 180 mm and an inner diameter of 100 mm.
  • the amorphous alloy ribbons were heat treated for 2 hours at a constant temperature of 320°C in a direct-current constant magnetic field of 30 Oe.
  • the amorphous alloy ribbons obtained and electrical insulating materials shown in Table 1 were used and they were alternately again wound to form wound magnetic cores having an outer diameter of 180 mm and an inner diameter of 100 mm.
  • Amorphous alloy ribbons and electrical insulating materials having the compositions and shapes shown in Table 1 were used and they were alternately wound to form wound magnetic cores having an outer diameter of 240 mm and an inner diameter of 100 mm.
  • the wound magnetic cores obtained were heat treated for 1 hour at a constant temperature of 550°C in a direct-current constant magnetic field of 1 Oe to crystallize amorphous alloys to deposit fine grains.
  • Amorphous alloy ribbons having the compositions and plate thicknesses shown in Table 1 were punched into annular products having an outer diameter of 60 mm and an inner diameter of 30 mm.
  • the annular products obtained and annular electrical insulating materials having an outer diameter of 59.5 mm and an inner diameter of 30.5 mm were alternately laminated to form laminated magnetic cores having a height of 40 mm according to Example 7.
  • amorphous alloy ribbons having the compositions and plate thicknesses shown in Table 1 were punched into annular products having an outer diameter of 60 mm and an inner diameter of 30 mm.
  • the annular products obtained and annular electrical insulating materials having an outer diameter of 61 mm and an inner diameter of 29 mm were alternately laminated to form laminated magnetic cores having a height of 40 mm according to Comparative Example 7.
  • the repetitive frequency is 1 kHz in Examples 1 and 3 and Comparative Examples 1 and 3, and 0.2 kHz in Examples 4, 5 and 6 and Comparative Examples 4, 5 and 6.
  • the magnetic cores of Examples 2 and 7 and Comparative Examples 2 and 7 were used in KrF excimer laser systems having an equivalent circuit of FIG. 4 whereupon the temperature rise of magnetic cores were measured.
  • six magnetic cores were used in L S2 to form a structure cooled by a fluorine-containing inert liquid.
  • C 12 20 nF
  • C 22 16 nF
  • V 0 20 kV
  • repetitive frequency 1 kHz.
  • Table 1 The results are also shown in Table 1.
  • the magnetic cores of the present invention wherein the width of the electrical insulating material is less than the width of magnetic material ribbons have small temperature rise of magnetic cores in use as compared with the prior magnetic cores wherein the width of the electrical insulating material is more than the width of the magnetic material ribbons. Even if the present magnetic cores are used as magnetic cores for high output pulse, they have an excellent cooling effect.
  • magnetic cores were produced by varying the ratios of the width (W IN ) of the electrical insulating material and the width (W AM ) of the amorphous alloys (W IN /W AM ), and they were used in a KrF excimer laser system having an equivalent circuit of FIG. 3. In this case, the temperature rise of the magnetic cores was measured.
  • the results wherein the amorphous alloys and the electrical insulating materials are the same as those of Example 1 are shown in FIG. 5 and the results wherein the amorphous alloys and the electrical insulating materials are the same as those of Example 5 are shown in FIG. 6.
  • the magnetic cores wherein the ratio of the width (W IN ) of the electrical insulating material and the width (W AM ) of the amorphous alloys (W IN /W AM ) is 0.5 ⁇ W IN /W AM ⁇ 1 have a large cooling effect and a small temperature rise and therefore they are preferred.
  • magnetic cores comprising the amorphous alloy ribbons having a thickness of 15 ⁇ m and the electrical insulating material having a thickness of 2 ⁇ m were used i.e., magnetic cores having a large ratio of the thickness of the magnetic material ribbon to the thickness of the electrical insulating material have a large influence of the difference in width of the materials on cooling characteristic as compared with FIG. 5 wherein magnetic cores comprising the amorphous alloy ribbons having a thickness of 16 ⁇ m and the electrical insulating material having a thickness of 6 ⁇ m were used. It can be understood from FIG.
  • Example 3 In the amorphous alloys and the electrical insulating material used in Example 3, the distance C between the centerline of the amorphous alloys in a width direction and the centerline of the electrical insulating material in a width direction (see FIG. 7) was varied to prepare magnetic cores, and they were used in a KrF excimer laser system having an equivalent circuit of FIG. 3. In this case, the temperature rise of the magnetic cores was measured. The results are shown in FIG. 8.
  • both edges of the electrical insulating material which do not project from the magnetic material ribbon are preferred from the standpoint of the contact area of the magnetic material ribbon to a coolant.
  • the magnetic cores of the present invention exhibit small temperature rise of the magnetic cores in use and a large cooling effect and therefore they are effective for magnetic cores used in a large electric power such as magnetic cores for high output pulse.

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Claims (13)

  1. Magnetischer Kern für Hochspannungsanwendungen, der erhalten werden kann durch Laminieren oder Wickeln eines Bandes (1) aus magnetischem Material und eines elektrisch isolierenden Bandes (2),
    dadurch gekennzeichnet, daß
    - der magnetische Kern die Beziehung 0,5a ≤ b < a aufweist, in welcher die Breite des Bandes (1) aus magnetischem Material "a" ist, und die Breite des elektrisch isolierenden Bandes (2) "b" ist, wobei die Dicke des elektrisch isolierenden Bandes (2) bemessen ist, Hochspannungen zu widerstehen,
    - das elektrisch isolierende Band (2) und das Band (1) aus magnetischem Material so angeordnet sind, daß beide Kanten des Bandes (1) aus magnetischem Material in einer Breitenrichtung von jeweiligen Kanten in einer Breitenrichtung des elektrisch isolierenden Bandes (2) vorstehen, und worin wenigstens eine Kante des Bandes aus magnetischem Material in der Lage ist, ein Kühlmittel zu kontaktieren.
  2. Magnetischer Kern nach Anspruch 1, dadurch gekennzeichnet, daß die Beziehung zwischen der Breite "a" des Bandes aus magnetischem Material und der Breite "b" des elektrisch isolierenden Bandes die Beziehung 0,9a ≤ b < a aufweist.
  3. Magnetischer Kern nach Anspruch 1, dadurch gekennzeichnet, daß die Beziehung zwischen der Breite "a" des Bandes aus magnetischem Material und der Breite "b" des elektrisch isolierenden Bandes die Beziehung 0,95a ≤ b < a aufweist.
  4. Magnetischer Kern nach Anspruch 1, dadurch gekennzeichnet, daß das Band aus magnetischem Material und das elektrisch isolierende Band so angeordnet sind, daß die Mittellinie des Bandes aus magnetischem Material und die Mittellinie des elektrisch isolierenden Bandes im wesentlichen zusammenfallen.
  5. Magnetischer Kern nach Anspruch 1, dadurch gekennzeichnet, daß das Band aus magnetischem Material aus einer amorphen Legierung gebildet ist, die durch die folgende allgemeine Formel dargestellt wird: Fe 100-y X y
    Figure imgb0038
     14 ≤ y ≤ 21 [at.%]
    Figure imgb0039
     worin X ein oder mehrere Elemente ist, die gewählt sind von Si, B, P, C und Ge.
  6. Magnetischer Kern nach Anspruch 1, dadurch gekennzeichnet, daß das Band aus magnetischem Material aus einer amorphen Legierung gebildet ist, die durch die folgende allgemeine Formel dargestellt wird: (Fe 1-x M x ) 100-y X y
    Figure imgb0040
     0 < x ≤ 0.4
    Figure imgb0041
     14 ≤ y ≤ 21 [at.%]
    Figure imgb0042
     worin M ein oder zwei Elemente ist, die gewählt sind von Co und Ni, und X ein oder mehrere Elemente ist, die gewählt sind von Si, B, P, C und Ge.
  7. Magnetischer Kern nach Anspruch 6, dadurch gekennzeichnet, daß das Band aus magnetischem Material aus einer amorphen Legierung gebildet ist, in welcher wenigstens 5 Atom-% von einem oder mehreren Elementen, die gewählt sind von Ti, Ta, V, Cr, Mn, Cu, Mo, Nb und W, der amorphen Legierung nach Anspruch 6 hinzugefügt sind.
  8. Magnetischer Kern nach Anspruch 1, dadurch gekennzeichnet, daß das Band aus magnetischem Material aus einer amorphen Legierung gebildet ist, die durch die folgende allgemeine Formel dargestellt wird: (Co 1-x Fe x ) 100-z (Si 1-y B y ) z
    Figure imgb0043
     0.02 ≤ x ≤ 0.1
    Figure imgb0044
     0.3 ≤ y ≤ 0.9
    Figure imgb0045
     20 ≤ z ≤ 30 [at.%]
    Figure imgb0046
  9. Magnetischer Kern nach Anspruch 8, dadurch gekennzeichnet, daß das Band aus magnetischem Material aus einer amorphen Legierung gebildet ist, in welcher wenigstens 5 Atom-% von einem oder mehreren Elementen, die von Ti, Ta, V, Cr, Mn, Cu, Mo, Nb und W gewählt sind, der amorphen Legierung nach Anspruch 7 hinzugefügt sind.
  10. Magnetischer Kern nach Anspruch 10, dadurch gekennzeichnet, daß das Band aus magnetischem Material aus einer Fe-basierenden, weichmagnetischen Legierung gebildet ist, die durch die folgende allgemeine Formel dargestellt wird: (Fe 1-a M a ) 100-x-y-z-α-β-γ Cu x Si y B z M -   α M --   β X γ
    Figure imgb0047
     0 ≤ a ≤ 0.5
    Figure imgb0048
     0.1 ≤ x ≤ 3
    Figure imgb0049
     0 ≤ y ≤ 30
    Figure imgb0050
     0 ≤ z ≤ 25
    Figure imgb0051
     0 ≤ y+z ≤ 35
    Figure imgb0052
     0.1 ≤ α ≤ 30
    Figure imgb0053
     0 ≤ β ≤ 10
    Figure imgb0054
     0 ≤ γ ≤ 10
    Figure imgb0055
     worin M eines oder zwei Elemente ist, die gewählt sind von Co und Ni, und M- ein oder mehrere Elemente ist, die gewählt sind von Nb, W, Ta, Zr, Hf, Ti und Mo, M-- ein oder mehrere Elemente ist, die gewählt sind von V, Cr, Mn, Al, Metallen der Platingruppe, Sc, Y, Elementen der seltenen Erden, Au, Zn, Sn und Re, und X ein oder mehrere Elemente ist, die gewählt sind von C, Ge, P, Ga, Sb, In, Be und As, und worin wenigstens 50% der Struktur aus feinen Körnern gebildet ist, und die Körner eine maximale Korngröße von nicht mehr als 50 nm (500 Angström) haben.
  11. Magnetischer Kern nach Anspruch 1, dadurch gekennzeichnet, daß der magnetische Kern in einer Hochleistungsanwendung eingesetzt ist.
  12. Magnetischer Kern nach Anspruch 11, dadurch gekennzeichnet, daß der Magnetischen Kern in Impulsgeneratoren verwendet wird.
  13. Magnetischer Kern nach Anspruch 11, dadurch gekennzeichnet, daß der magnetische Kern in Transformatoren verwendet wird.
EP91916787A 1990-09-28 1991-09-27 Magnetkern Expired - Lifetime EP0503081B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP256966/90 1990-09-28
JP25696690 1990-09-28
PCT/JP1991/001294 WO1992006480A1 (fr) 1990-09-28 1991-09-27 Noyau magnetique

Publications (3)

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EP0503081A1 EP0503081A1 (de) 1992-09-16
EP0503081A4 EP0503081A4 (en) 1993-07-28
EP0503081B1 true EP0503081B1 (de) 1996-06-12

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EP91916787A Expired - Lifetime EP0503081B1 (de) 1990-09-28 1991-09-27 Magnetkern

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EP (1) EP0503081B1 (de)
JP (1) JP3156850B2 (de)
KR (1) KR970000872B1 (de)
DE (1) DE69120248T2 (de)
WO (1) WO1992006480A1 (de)

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US5868123A (en) * 1995-10-05 1999-02-09 Alliedsignal Inc. Magnetic core-coil assembly for spark ignition systems
US7057489B2 (en) 1997-08-21 2006-06-06 Metglas, Inc. Segmented transformer core
US7056595B2 (en) * 2003-01-30 2006-06-06 Metglas, Inc. Magnetic implement using magnetic metal ribbon coated with insulator
EP3916743A1 (de) * 2020-05-29 2021-12-01 ABB Power Grids Switzerland AG Hybrider transformatorkern und verfahren zur herstellung eines transformatorkerns

Family Cites Families (8)

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DE2103523A1 (de) * 1971-01-26 1972-08-17 Pfister, Karl Ingolf, 3504 Kaufungen Blechpaket für dynamo-elektrische Einrichtungen wie z.B. elektrische Maschinen, Transformatoren oder dergleichen
JPS5482027A (en) * 1977-12-12 1979-06-29 Mitsubishi Electric Corp Divided magnetic core
JPS58139408A (ja) * 1982-02-15 1983-08-18 Hitachi Metals Ltd 巻鉄心の製造方法
JPH01208822A (ja) * 1988-02-17 1989-08-22 Toshiba Corp 巻鉄心の製造方法
JP2823204B2 (ja) 1988-05-17 1998-11-11 株式会社東芝 軟磁性合金
JP2778697B2 (ja) * 1988-06-13 1998-07-23 株式会社東芝 Ｆｅ基軟磁性合金
JPH0787133B2 (ja) * 1989-02-02 1995-09-20 日立金属株式会社 Ｆｅ基微結晶軟磁性合金からなる巻磁心及びその製造方法
JPH03124008A (ja) * 1989-10-07 1991-05-27 Tdk Corp コイル装置

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Publication number Publication date
KR970000872B1 (ko) 1997-01-20
EP0503081A1 (de) 1992-09-16
DE69120248D1 (de) 1996-07-18
EP0503081A4 (en) 1993-07-28
JP3156850B2 (ja) 2001-04-16
WO1992006480A1 (fr) 1992-04-16
DE69120248T2 (de) 1996-12-05
KR920702535A (ko) 1992-09-04

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