WO2016034338A1 - Matériau magnétique doux anisotrope ayant une anisotropie moyenne et une faible coercivité et procédé de production de celui-ci - Google Patents

Matériau magnétique doux anisotrope ayant une anisotropie moyenne et une faible coercivité et procédé de production de celui-ci Download PDF

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Publication number
WO2016034338A1
WO2016034338A1 PCT/EP2015/067463 EP2015067463W WO2016034338A1 WO 2016034338 A1 WO2016034338 A1 WO 2016034338A1 EP 2015067463 W EP2015067463 W EP 2015067463W WO 2016034338 A1 WO2016034338 A1 WO 2016034338A1
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WO
WIPO (PCT)
Prior art keywords
soft magnetic
range
field strength
permeability
powder
Prior art date
Application number
PCT/EP2015/067463
Other languages
German (de)
English (en)
Inventor
Gotthard Rieger
Manfred Rührig
Original Assignee
Siemens Aktiengesellschaft
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Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2016034338A1 publication Critical patent/WO2016034338A1/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
    • 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
    • H01F1/28—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 dispersed or suspended in a bonding agent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • 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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/04—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 hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0579—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B with exchange spin coupling between hard and soft nanophases, e.g. nanocomposite spring magnets

Definitions

  • the present invention relates to an anisotropically soft magnetic ⁇ material with medium anisotropy and low Koer ⁇ zitivfeidschreib and its production process.
  • Anisotropically soft magnetic materials are particularly suitable for effectively increasing the torque in reluctance motors.
  • this permanent magnet-free motor class is attractive for many applications, since the lamination of reluctance machines for mechanical stability reasons contains unavoidable axial braces, occurs there in usual ⁇ isotropic soft magnetic materials on a transverse magnetization, which reduces the torque.
  • this transverse magnetization to be suppressed by anisotropic soft magnetic Mate rial on the other hand to in the flow direction is to be retained ⁇ ⁇ a slight Mag netisieriana and high permeability. It is therefore desirable to have a maximum permeability difference between the flux-carrying direction and perpendicular to it.
  • NdFeB magnetically highly anisotropic NdFeB compounds, which have a coercive field strength due to special process control in the so-called uniaxial light direction, which does not lead to pronounced permanent-magnetic behavior in real flow-guiding geometries to lead.
  • NdFeB soft material although the permeability perpendicular to the light direction is very small, ⁇ 2, but the comparatively still high coercive field strength in the easy direction limits the upper permeability, so that the desired effect on the torque is limited.
  • the material system is subject to the same price increases as permanent magnetic NdFeB.
  • the permeability can hardly be increased since the remagnetization is only achieved by nucleation with subsequent spontaneous rotation.
  • the maximum magnetization of NdFeB soft is limited to 1.6 T, which is significantly lower than that of conventionally used FeSi sheet.
  • the [1] reveals that the anisotropy of FeB compounds was determined experimentally.
  • Fig. 4 shows a magnetization curve ⁇ approximately perpendicular to the light plane.
  • composition allows different saturation fields / anisotropy fields and correspondingly different initial slopes / permeabilities to be set. It can reach up to a few tenths of Tesla saturation fields, while at NdFeB soft in the area of some Tesla. These values could still be sufficient for a reluctance motor.
  • an anisotropically soft magnetic material having a moderate anisotropy and low coercive field strength is proposed, wherein in a slight flow direction a high permeability, in particular in the range up to about 300, and in a heavy direction perpendicular to the light flow, a medium Permeability time, in particular in the range of about 3 to about 10 exertge ⁇ provides, wherein along a slight plane of the material, this is generated with the high permeability.
  • the torque can be increased. Higher speed stability and a low absolute inductance level can effectively increase the power at high speeds. Since the magnetic flux has a low penetration depth into the rotor, larger hollow shafts are possible. As a result of the homogeneous field distribution a lower torque ripple, less resonant excitation and low acoustics ⁇ development in comparison with the prior art are possible. It is easy to realize external rotor motors compared to flow barrier cuts. Further advantageous embodiments are claimed in conjunction with the subclaims. According to an advantageous embodiment, the material may comprise iron-containing boron compounds, in particular Fe 2 B or Fe 3 B.
  • the iron can additionally be partially substituted by Co, Cr or Si and, for example, be Fe1.4C0Q.6B.
  • the material can be a system R2 (Co] __ x M x ) 17 with
  • the material is possible to produce the material as a powder having particle sizes in the range of about 10 to 100 ⁇ m.
  • generating the material as a powder can be carried out by rapid solidification.
  • a compounding of the powder can be carried out in a magnetic field ⁇ the.
  • alignment of the powder in a magnetic field can be completed.
  • a production of a shaped body can be carried out by means of hot pressing, sintering or polymer-based compacting.
  • the polymer-based compaction can be carried out by means of metal injection molding (metal injection molding).
  • Figure 1 is a first illustration of the task of the invention
  • Figure 2 is a second illustration of the task of the invention
  • Figure 3 is a representation of an embodiment of the invention.
  • Figure 4 is a further illustration of an inventive
  • Figure 5 shows an embodiment of an inventive
  • FIG. 1 shows a representation with regard to the object according to the invention. It shows a section of a sheet metal ago ⁇ conventional reluctance motor. The arrows show respective ones
  • FIG. 1 shows a conventional embodiment of a conventional material composition.
  • anisotropic permeability has been produced by means of high intrinsic crystal anisotropy.
  • Thenellsbei ⁇ game shows a uniaxial anisotropy in a NdFeW soft magnetic material.
  • the heavy direction is shown as ⁇ vertical.
  • the easy direction is shown in parallel with ⁇ .
  • FIG. 3 shows a representation of an exemplary embodiment of the invention for the material.
  • the chemical compounds according to the present invention ⁇ proposed to the properties of a high permeability in the flow direction at the same time medium anisotropy ⁇ _: fulfill ⁇ 10 perpendicular thereto, and the highest possible saturation magnetization len.
  • highly iron-containing compounds come into question, such as Fe2B and the metastable Fe3B and with
  • FIG. 4 shows an embodiment of a composite 1 according to the invention, in which Fe 3 B is used and leads by means of the combi nation ⁇ with the shape anisotropy to a middle rule intrinsi ⁇ anisotropy system. According to this system, H a ⁇ 630 kA / m. FIG. 4 is taken from [1].
  • FIG. 5 shows an exemplary embodiment of a method according to the invention.
  • a suitable Kompakt istsver- To crystal properties of the invention in the system Fe (Co) B use with medium intrinsic planar anisotropy, a suitable Kompakt istsver- must be used drive that allows a macroscopic Orientie ⁇ of the severe direction and leads to moldings highest possible density.
  • the crystallite size in the shaped body in contrast to typical permanent magnets, where it is necessary as a prerequisite for permanent magnetic properties, is not significant.
  • typically powders in the range of less than 10 to 100 ⁇ m are produced, specifically in a second one
  • Step S2 For example, in a Fe (Co) 3B system, the
  • Powder generated by rapid solidification As such or already compounded Magnetfeldausrich a ⁇ tung subjected (S3) and by means of a hot pressing, sintering, or a polymer-based compaction process these powders to stable at ⁇ play as metal injection molding (MIM) len molded bodies with the desired geometry and magnetic preferred direction converted (S4).
  • MIM metal injection molding
  • a suitable material in a first step S1, it can be produced along a slight plane of the material, that having a high permeability number.
  • the present invention relates to an anisotropic soft magnetic ⁇ genetic material and its preparation medium Anisot ⁇ ropie and low coercive field strength, wherein in a light flux direction of a high permeability, especially in the range up to about 300 and a perpendicular to the light flow direction heavy direction, a average permeability, in particular in the range of about 3 to about 10 be ⁇ provided.
  • the invention is characterized in that material is used which has a high permeability along a slight Ebe ⁇ ne.

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

Abstract

La présente invention concerne un matériau magnétique doux anisotrope et un procédé de production de celui-ci avec une anisotropie moyenne et une faible coercivité. Le matériau a une perméabilité élevée, en particulier dans la gamme allant jusqu'à environ 300, dans un sens de flux faible et une perméabilité moyenne, en particulier dans la gamme allant d'environ 3 à environ 10, dans un sens de flux fort. L'invention est caractérisée en ce que l'on utilise un matériau qui a une grande perméabilité sur un niveau faible.
PCT/EP2015/067463 2014-09-05 2015-07-30 Matériau magnétique doux anisotrope ayant une anisotropie moyenne et une faible coercivité et procédé de production de celui-ci WO2016034338A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014217761.8 2014-09-05
DE102014217761.8A DE102014217761A1 (de) 2014-09-05 2014-09-05 Anisotrop weichmagnetisches Material mit mittlerer Anisotropie und geringer Koerzitivfeldstärke sowie dessen Herstellungsverfahren

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WO2016034338A1 true WO2016034338A1 (fr) 2016-03-10

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WO (1) WO2016034338A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN111074142A (zh) * 2019-12-25 2020-04-28 西安交通大学 一种高抗磨定向Fe2B致密块体及其制备方法

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DE202017107757U1 (de) 2017-12-20 2018-01-22 Certoplast Technische Klebebänder Gmbh Vorrichtung zur Herstellung einer Ummantelung für Kabel

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DE1563238A1 (de) * 1966-08-02 1970-04-09 Licentia Gmbh Synchronmotor,insbesondere Reluktanzmotor
DE4006568A1 (de) * 1990-03-02 1991-09-05 Siemens Ag Verfahren zur herstellung eines hochkoerzitiven magnetwerkstoffes auf basis se-fe-co-b
EP0558691B1 (fr) * 1991-03-08 1994-11-30 BASF Aktiengesellschaft Categorie nouvelle de materiaux magnetiques, leur production et leur utilisation
JP3470032B2 (ja) * 1997-12-22 2003-11-25 信越化学工業株式会社 希土類永久磁石材料およびその製造方法
DE102007035774B9 (de) * 2007-07-27 2013-03-14 Vacuumschmelze Gmbh & Co. Kg Weichmagnetische Legierung auf Eisen-Kobalt-Basis sowie Verfahren zu deren Herstellung
DE102010060740A1 (de) * 2010-11-23 2012-05-24 Vacuumschmelze Gmbh & Co. Kg Weichmagnetisches Metallband für elektromechanische Bauelemente
DE102012202019A1 (de) * 2012-02-10 2013-08-14 Ksb Aktiengesellschaft Herstellungsverfahren für einen Rotor sowie Rotor

Non-Patent Citations (2)

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Title
COENE ET AL: "Magnetocrystalline anisotropy of Fe3B, Fe2B and Fe1.4Co0.6B as studied by Lorentz electron microscopy, singular point detection and magnetization measurements", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 96, no. 1-3, 1 June 1991 (1991-06-01), pages 189 - 196, XP024475718, ISSN: 0304-8853, [retrieved on 19910601], DOI: 10.1016/0304-8853(91)90627-M *
KIRCHMAYR ET AL, 1 January 1990, LANDOLT-BOERNSTEIN, NEW SERIES III/19D2,, PAGE(S) 362, XP009186837 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111074142A (zh) * 2019-12-25 2020-04-28 西安交通大学 一种高抗磨定向Fe2B致密块体及其制备方法

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