EP0883141B1 - Procédé de traitement thermique sous champ magnétique d'un composant en matériau magnétique doux - Google Patents

Procédé de traitement thermique sous champ magnétique d'un composant en matériau magnétique doux Download PDF

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Publication number
EP0883141B1
EP0883141B1 EP98401043A EP98401043A EP0883141B1 EP 0883141 B1 EP0883141 B1 EP 0883141B1 EP 98401043 A EP98401043 A EP 98401043A EP 98401043 A EP98401043 A EP 98401043A EP 0883141 B1 EP0883141 B1 EP 0883141B1
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EP
European Patent Office
Prior art keywords
magnetic field
maximum
pulse
magnetic
field strength
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 - Lifetime
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EP98401043A
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German (de)
English (en)
French (fr)
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EP0883141A1 (fr
Inventor
Georges Couderchon
Philippe Verin
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Mecagis SNC
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Mecagis SNC
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
    • 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
    • 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
    • H01F1/14708—Fe-Ni based alloys
    • 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
    • H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
    • 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
    • H01F1/15341—Preparation processes therefor

Definitions

  • the present invention relates to a heat treatment process under magnetic field of a magnetic component, for example of a nucleus magnetic circuit breaker, made of a soft magnetic alloy such as than a FeNiMo 15-80-5 alloy, an amorphous Co base alloy or an alloy Nanocrystalline FeSiCuNbB.
  • a magnetic component for example of a nucleus magnetic circuit breaker, made of a soft magnetic alloy such as than a FeNiMo 15-80-5 alloy, an amorphous Co base alloy or an alloy Nanocrystalline FeSiCuNbB.
  • the shape of the cycle hysteresis is not essential. However, for many applications processing low amplitude electrical signals, for example circuit breakers RCDs, switching power supplies or connection transformers to digital telephone networks, the shape of the hysteresis cycle takes on a capital importance.
  • the shape of the hysteresis cycle is characterized, in particular, by the Br / Bm ratio, ratio of the residual induction to the maximum induction. When Br / Bm is greater than 0.9, approximately, the hysteresis cycle is said to be “rectangular”.
  • the hysteresis cycle is said " layer ".
  • Materials with a rectangular hysteresis cycle are used, for example example, to make the magnetic cores of magnetic amplifiers or switching power supply regulation stages.
  • Cycle materials of coated hysteresis are used, in particular, to produce the magnetic cores earth leakage circuit breakers, electric filters or transformers galvanic decoupling.
  • soft magnetic alloys with low anisotropies are used (anisotropy coefficients less than 5000 ergs / cm 3 , and preferably less than 1000 ergs / cm 3 ), such as FeNiMo 15-80-5 alloys, amorphous Co base alloys or alloys of the FeSiCuNbB nanocrystalline type, and the magnetic components are subjected to annealing under an intense magnetic field. Annealing is carried out at a temperature below the Curie point of the alloy.
  • the magnetic field is longitudinal, that is to say parallel to the direction in which the magnetic properties will be measured, when one wants to obtain a rectangular hysteresis cycle. It is transverse, that is to say perpendicular to the direction in which the magnetic properties will be measured, when one wants to obtain a lying hysteresis cycle.
  • the magnetic field is applied for the duration of the treatment, and it is constant.
  • the temperature and the duration of treatment are the two parameters which affect the result of the heat treatment. These treatments, when they are of long duration (from one to a few hours), make it possible to obtain with good reliability either very rectangular hysteresis cycles (Br / Bm> 0.9), or hysteresis cycles very coated Br / Bm ⁇ 0.2).
  • the object of the present invention is to remedy this drawback by giving means for reproducibly obtaining magnetic components by soft magnetic alloy having intermediate hysteresis cycles between very rectangular hysteresis cycles and very layered hysteresis cycles is that is, characterized by a Br / Bm ratio of between 0.3 and 0.9.
  • the invention relates to a heat treatment process under magnetic field of a magnetic component made of soft magnetic material such that, for example, a FeNiMo 15-80-5 alloy, an amorphous Co base alloy or a nanocrystalline FeSiCuNbB alloy, according to which the component is annealed magnetic at a temperature below the curie point of the magnetic material, and, during annealing, the magnetic component is subjected to a magnetic field longitudinal or transverse, unidirectional, alternating or continuous, applied in the form of a succession of slots each comprising a first part during which the intensity of the magnetic field reaches a maximum value, and a second part during which the intensity of the magnetic field has a minimum value.
  • This minimum value is preferably less than 10% of the maximum value of the field corresponding to the most important niche in which the component magnetic is subject.
  • the maximum intensities of the magnetic fields of two slots successive can be substantially equal or substantially different.
  • the maximum intensity of the magnetic field of the second slot can be less than the maximum intensity of the magnetic field of the first niche, so as to obtain a decrease in the maximum magnetic field throughout the treatment.
  • the maximum intensity of magnetic field of the last niche performed can, therefore, be less than 25% of the maximum intensity of the magnetic field of the first niche performed.
  • the minimum field strength magnetic is zero.
  • each slot has a total duration of less than 30 minutes, the duration of the period during which the magnetic field has a maximum intensity is less than 15 minutes.
  • the heat treatment according to the invention which applies to any component magnetic soft magnetic alloy having very weak anisotropies, consists annealing under magnetic field at a temperature below the Curie point of soft magnetic alloy, in which the magnetic field is applied discontinuously.
  • This heat treatment under magnetic field is carried out in a known unidirectional magnetic field heat treatment oven in himself.
  • the magnetic component is a core magnetic ring consisting of a ribbon of soft magnetic alloy wound in order to form a torus of rectangular section
  • the magnetic field is generated either by an electric conductor traversed by a direct electric current or alternating, on which the torus is threaded, either by a coil whose axis is parallel to the axis of revolution of the torus, and which surrounds the torus.
  • the field magnetic is longitudinal, i.e. parallel to the longitudinal axis of the ribbon soft magnetic alloy.
  • the magnetic field is transverse, that is, parallel to the surface of the ribbon, but perpendicular to the axis longitudinal of it.
  • the annealing temperature should preferably be greater than 0.5 times the Curie temperature expressed in degrees centigrade.
  • Each slot comprises a first part of duration ⁇ t ( ⁇ t 1 for C 1 , ⁇ t 2 for C 2 , etc.) during which the intensity of the magnetic field has a maximum value Hmax (Hmax 1 for C 1 , Hmax 2 for C 2 , etc.), and a second part of duration ⁇ t '( ⁇ t' 1 for C 1 , ⁇ t ' 2 for C 2 , etc.) during which the intensity of the magnetic field has a minimum value Hmin (Hmin 1 for C 1 , Hmin 2 for C 2 , etc.).
  • Hmax represents the intensity of the magnetic field.
  • Hmax represents the peak intensity of the magnetic field (maximum intensity reached at each alternating).
  • the slots are rectangular. But the slots can be, for example, of the trapezoidal type or of the triangular type, the intensity of the magnetic field decreasing regularly during the part of the niche corresponding to the intense magnetic field.
  • the maximum values of the magnetic field Hmax 1 and Hmax 2 are equal.
  • Hmax 3 is lower than Hmax 2 and higher than Hmax 4 .
  • the evolution of the successive maximum values of the magnetic field can be chosen at will.
  • these successive values can decrease throughout the treatment, starting from a value allowing to saturate the toroids during treatment (this value depends not only on the nature of the material constituting the toroids, but also on the dimensions tori) to reach, at the end of treatment, a value less than 25% of the initial value.
  • the minimum values of the magnetic field Hmin are, in general, substantially zero, and in any case must remain below 10% of the value maximum reached by the magnetic field during treatment.
  • ⁇ t are, in general, of the order of 5 minutes, and preferably should remain less than 15 minutes. They are not necessarily equal from niche to the other.
  • the number of slots can be chosen at will depending on the result obtain, and also, depending on the total duration of treatment which, from preferably, is more than 10 minutes and can reach several hours. In all in any event, the number of slots must be greater than 2.
  • magnetic cores in the form of tori were produced, 26 mm in outside diameter, 16 mm in inside diameter and 10 mm thick.
  • These magnetic cores were first subjected to a heat treatment by maintaining at the temperature of 530 ° C. for 1 hour in order to give them a nanocrystalline structure, then subjected to various anneals under magnetic field in accordance with the invention.
  • the different treatments were differentiated by the holding temperature, by the proportion of the holding time during which the magnetic field was applied and by the direction of the magnetic field.
  • the temperature retention time was 1 hour
  • the magnetic field was applied in the form of rectangular slots during which the maximum intensity of the magnetic field was sufficient to saturate the toroids for a few minutes.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Thin Magnetic Films (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • General Induction Heating (AREA)
EP98401043A 1997-06-04 1998-04-29 Procédé de traitement thermique sous champ magnétique d'un composant en matériau magnétique doux Expired - Lifetime EP0883141B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9706849 1997-06-04
FR9706849A FR2764430B1 (fr) 1997-06-04 1997-06-04 Procede de traitement thermique sous champ magnetique d'un composant en materiau magnetique doux

Publications (2)

Publication Number Publication Date
EP0883141A1 EP0883141A1 (fr) 1998-12-09
EP0883141B1 true EP0883141B1 (fr) 2003-05-28

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ID=9507559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401043A Expired - Lifetime EP0883141B1 (fr) 1997-06-04 1998-04-29 Procédé de traitement thermique sous champ magnétique d'un composant en matériau magnétique doux

Country Status (19)

Country Link
US (1) US5935346A (es)
EP (1) EP0883141B1 (es)
JP (1) JPH118110A (es)
KR (1) KR19990006483A (es)
CN (1) CN1112711C (es)
AT (1) ATE241849T1 (es)
AU (1) AU733279B2 (es)
CZ (1) CZ165998A3 (es)
DE (1) DE69814983T2 (es)
ES (1) ES2196510T3 (es)
FR (1) FR2764430B1 (es)
HU (1) HUP9801275A3 (es)
PL (1) PL184069B1 (es)
RO (1) RO119574B1 (es)
RU (1) RU2190023C2 (es)
SK (1) SK67798A3 (es)
TR (1) TR199801001A3 (es)
TW (1) TW367508B (es)
ZA (1) ZA984148B (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6176943B1 (en) * 1999-01-28 2001-01-23 The United States Of America As Represented By The Secretary Of The Navy Processing treatment of amorphous magnetostrictive wires
JP4047114B2 (ja) * 2002-09-13 2008-02-13 アルプス電気株式会社 薄膜磁気ヘッド
US7713888B2 (en) * 2004-05-24 2010-05-11 Ashkenazi Brian I Magnetic processing of electronic materials
US7479859B2 (en) 2006-03-08 2009-01-20 Jack Gerber Apparatus and method for processing material in a magnetic vortex
EP2209127A1 (fr) 2009-01-14 2010-07-21 ArcelorMittal - Stainless & Nickel Alloys Procédé de fabrication d'un noyau magnétique en alliage magnétique ayant une structure nanocristalline
CN101717901B (zh) * 2009-12-22 2011-07-20 上海大学 脉冲磁场条件下非晶薄带热处理工艺与装置
CN102031348B (zh) * 2010-11-09 2012-03-14 顾群业 一种消除热轧制钢板应力的方法
CN102031349B (zh) * 2010-11-09 2012-02-29 张子睿 消除浇铸钢材结构件应力的方法
US8699190B2 (en) 2010-11-23 2014-04-15 Vacuumschmelze Gmbh & Co. Kg Soft magnetic metal strip for electromechanical components
DE102010060740A1 (de) * 2010-11-23 2012-05-24 Vacuumschmelze Gmbh & Co. Kg Weichmagnetisches Metallband für elektromechanische Bauelemente
US9457404B2 (en) * 2013-02-04 2016-10-04 The Boeing Company Method of consolidating/molding near net-shaped components made from powders
US9993946B2 (en) 2015-08-05 2018-06-12 The Boeing Company Method and apparatus for forming tooling and associated materials therefrom
US9933392B2 (en) * 2015-09-30 2018-04-03 The Boeing Company Apparatus, system, and method for non-destructive ultrasonic inspection
CN105861959B (zh) * 2016-05-26 2018-01-02 江苏奥玛德新材料科技有限公司 智能电表用低角差纳米晶软磁合金磁芯及其制备方法
CN106119500B (zh) * 2016-08-04 2017-11-07 江西大有科技有限公司 软磁材料磁芯加纵磁场热处理方法及装置
CN107464649B (zh) * 2017-08-03 2020-03-17 江苏奥玛德新材料科技有限公司 一种具有线性磁滞回线的磁芯
CN112251648B (zh) * 2020-09-29 2022-02-11 绵阳西磁科技有限公司 一种高磁导率低损耗FeNiMo磁粉心及其制备方法
CN115094210B (zh) * 2022-07-16 2023-04-25 温州大学 一种软磁合金多功能复合磁场真空热处理装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH545530A (es) * 1972-05-05 1974-01-31
DE2816173C2 (de) * 1978-04-14 1982-07-29 Vacuumschmelze Gmbh, 6450 Hanau Verfahren zum Herstellen von Bandkernen
JPS565962A (en) * 1979-06-27 1981-01-22 Sony Corp Manufacture of amorphous magnetic alloy
JPS5779157A (en) * 1980-10-31 1982-05-18 Sony Corp Manufacture of amorphous magnetic alloy
US4873605A (en) * 1986-03-03 1989-10-10 Innovex, Inc. Magnetic treatment of ferromagnetic materials
JPS6311654A (ja) * 1986-06-30 1988-01-19 Mitsubishi Electric Corp 非晶質磁性材料の製造方法
JPH0694589B2 (ja) * 1987-04-13 1994-11-24 富士写真フイルム株式会社 非晶質軟磁性材料の熱処理方法
US4816965A (en) * 1987-05-29 1989-03-28 Innovex Inc. Mechanism for providing pulsed magnetic field
JP2713363B2 (ja) * 1987-06-04 1998-02-16 日立金属 株式会社 Ｆｅ基軟磁性合金圧粉体及びその製造方法
IT1211537B (it) * 1987-11-18 1989-11-03 Halsall Prod Ltd Motore a corrente continua senza spazzole per motoventilatori pompe ed altre apparecchiature similari
JP2710949B2 (ja) * 1988-03-30 1998-02-10 日立金属株式会社 超微結晶軟磁性合金の製造方法
US4950337A (en) * 1989-04-14 1990-08-21 China Steel Corporation Magnetic and mechanical properties of amorphous alloys by pulse high current
JP2927826B2 (ja) * 1989-07-24 1999-07-28 ティーディーケイ株式会社 軟磁性合金とその製造方法
JPH0570901A (ja) * 1991-09-16 1993-03-23 Hitachi Metals Ltd Ｆｅ基軟磁性合金
JPH0636927A (ja) * 1992-07-14 1994-02-10 Fujitsu Ltd 軟磁性薄膜及びそれを用いた薄膜磁気ヘッド
JPH07254116A (ja) * 1994-03-16 1995-10-03 Fuji Electric Co Ltd 薄膜磁気ヘッドの熱処理方法

Also Published As

Publication number Publication date
HUP9801275A3 (en) 2002-12-28
JPH118110A (ja) 1999-01-12
ES2196510T3 (es) 2003-12-16
FR2764430B1 (fr) 1999-07-23
AU733279B2 (en) 2001-05-10
US5935346A (en) 1999-08-10
HUP9801275A2 (hu) 2000-12-28
TW367508B (en) 1999-08-21
RO119574B1 (ro) 2004-12-30
ATE241849T1 (de) 2003-06-15
CN1112711C (zh) 2003-06-25
KR19990006483A (ko) 1999-01-25
TR199801001A2 (xx) 1999-10-21
ZA984148B (en) 1998-11-26
DE69814983D1 (de) 2003-07-03
FR2764430A1 (fr) 1998-12-11
CZ165998A3 (cs) 1999-01-13
SK67798A3 (en) 1999-01-11
AU6483698A (en) 1998-12-10
PL184069B1 (pl) 2002-08-30
TR199801001A3 (tr) 1999-10-21
PL326622A1 (en) 1998-12-07
DE69814983T2 (de) 2004-05-13
HU9801275D0 (en) 1998-07-28
CN1201991A (zh) 1998-12-16
RU2190023C2 (ru) 2002-09-27
EP0883141A1 (fr) 1998-12-09

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