EP0086485A2 - Gewickelter Eisenkern - Google Patents

Gewickelter Eisenkern Download PDF

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Publication number
EP0086485A2
EP0086485A2 EP83101409A EP83101409A EP0086485A2 EP 0086485 A2 EP0086485 A2 EP 0086485A2 EP 83101409 A EP83101409 A EP 83101409A EP 83101409 A EP83101409 A EP 83101409A EP 0086485 A2 EP0086485 A2 EP 0086485A2
Authority
EP
European Patent Office
Prior art keywords
iron core
wound iron
atom
magnetic alloy
base amorphous
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.)
Granted
Application number
EP83101409A
Other languages
English (en)
French (fr)
Other versions
EP0086485B1 (de
EP0086485A3 (en
Inventor
Yasunobu Ogata
Yoshizo Sawada
Yoshihito Yoshizawa
Yasuo Arai
Shunsuke Arakawa
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Publication of EP0086485A2 publication Critical patent/EP0086485A2/de
Publication of EP0086485A3 publication Critical patent/EP0086485A3/en
Application granted granted Critical
Publication of EP0086485B1 publication Critical patent/EP0086485B1/de
Expired legal-status Critical Current

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    • 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
    • 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

Definitions

  • the present invention relates to a wound iron core made of a Co-base amorphous alloy and exhibiting a rectangular hysteresis property, as well as a superior soft magnetic property.
  • Wound iron cores made of, for example, anisotropic 50% Ni permalloy, supermalloy, directional silicon steel or the like material are finding use in magnetic phase shifters, magnetic amplifiers, D.C. current detectors, magnetic modulators and nowadays in S. W and R of magnetic amplifier control system.
  • these conventional wound iron cores have a large rectangle ratio Br/B 10 in the B-H hysteresis curve.
  • the wound iron core is used at a high frequency of an order of several tens of kilohertz (KHz) or higher.
  • KHz kilohertz
  • the 50% Ni permalloy which is one of the conventionally used materials, exhibits a coercive force Hc which is as large as 0.1 Oe to cause a large loss in the core resulting in a large heat generation.
  • Hc coercive force
  • the core of permalloy system such as of 50% Ni permalloy, supermalloy and so forth has a high sensitivity to strain of the magnetic material, so that the magnetic property is deteriorated seriously due to mechanical strain incurred during handling, transportation and winding or coiling thereby making it impossible to attain the expected performance of the wound iron core and the electric balance.
  • these conventional materials for forming the wound iron core are produceable only through a careful and complicated process having the steps such as melting, ingot making, hot rolling, pickling, cold rolling and so forth, so that the production cost is raised uneconomically.
  • an object of the invention is to provide a less-expensive wound iron core having a rectangle ratio Br/B IO equivalent to that of ordinarily used 50% Ni permalloy and smaller coercive force than the same, while offering various advantages such as superior stability against strain and a high impact resistance, as well as easiness in heat treatment for attaining the rectangular hysteresis property, thereby to overcome the above-described problems of the prior art.
  • a thin sheet of Co-base amorphous alloy is used as the thin sheet having high magnetic permeability for constituting the wound iron core, and this sheet is subjected to an annealing in a magnetic field in the direction of excitation.
  • the attached sole Figure shows a D.C. hysteresis curve as obtained with a wound iron core of the invention formed from a Co-base amorphous alloy strip, in comparison with that exhibited by a wound iron core made from a conventional Fe-base material.
  • a Co-base amorphous alloy exhibits a magnetostriction of zero or substantially zero and, hence, a small magnetic anisotropy in the quenched state, which in turn facilitates the uniform and unidirectional magnetization by an external magnetic field during the annealing which is conducted under the influence of the magnetic field to attain a superior rectangular hysteresis property. It is, therefore, possible to attain a distinguished rectangular hysteresis property much more easily than in the case where an amorphous Fe-base alloy which tends to exhibit a large magnetostriction is used as the material.
  • the small magnetostriction permits also a reduction in the coercive force down to a level below 1/10 of that presented by ordinarily used 50% Ni permalloy and below 1/2 of that presented by ordinarily used amorphous Fe-base alloy.
  • the Co-base amorphous alloy has been used mainly as the material of magnetic heads. No proposal nor attempt has been made up to now as to the use of the Co-base amorphous alloy in place of the 50% Ni permalloy as the magnetic core for would iron core, by realizing a rectangular hysteresis property through an annealing in a magnetic field parallel to the direction of the exciting current.
  • a wound iron core simultaneously exhibiting a large value of the rectangle ratio Br/B10 and a low coercive force Hc is obtainable by a process which has the steps of preparing an amorphous alloy having a composition expressed by Co 100-a-a X a Y b, where X represents one, two or more elements selected from a group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Ni, Ru, Y, Ce, Pr, Nd, Sm, Eu, Gd, Tb and Dy, while Y represents one, two or more elements selected from a group consisting of B, C, Al, Si, P and Ge, particularly an amorphous alloy specified above satisfying the conditions of 0 ⁇ a ⁇ 15 and 14 ⁇ b ⁇ 30, annealing the amorphous alloy in a magnetic field and, after a cooling, winding the alloy into the form of an iron core.
  • the total content of the element or elements Y serving as an amorphous structure former should range between 14 and 30 atom %, because the amorphous structure cannot be formed when the Y content is less than 14 atom % and when the same is 30 atom % or greater.
  • Metalloid or semimetal elements such as C, Si, B, P, Ge and Al are known as elements for forming amorphous structure.
  • the effect of the invention is not affected seriously by the presence of C, P, Ge or Al, the content of such elements is preferably not greater than 5 atom %.
  • the B content should be selected to be not greater than 10 atom % but the B content should not be reduced down below 7 atom % for otherwise the amorphous structure will not be obtained. Any Si content less than 10 atom % and not smaller than 20 atom % is not preferred because such an Si content will seriously deteriorate the thermal stability and increase the coercive force undesirably.
  • the content of the element X which serves as the transition metal element should be selected to be not greater than 15 atom %, because X content above 15 % undesirably increases the magnetostriction As to a level of 10 x 10 or greater.
  • Elements other than Fe, Ni and Mn when added by an amount smaller than 15 atom %, reduces the magnetostriction nearly to zero and improves the ability for forming the amorphous structure advantageously.
  • the elements X particularly Ce, Pr, Nd, Sm, Eu, Gd, Tb and Dy, improves the hardness and, in addition, provides a higher thermal stability through raising the crystallization temperature.
  • the expected rectangular hysteresis property can be obtained also when the Co-base amorphous alloy strip of above-specified composition is annealed in a magnetic field in the direction of excitation which usually coincides with the longitudinal direction of the strip followed by an annealing in a magnetic field.
  • direct electric current has been used hitherto for forming the external magnetic field during the annealing, an effect almost equivalent to that produced by the direct electric current is obtainable when an electric current obtained by a half-wave rectification or even alternating current (commercial frequency) is used for the formation of the magnetic field.
  • a Co-base amorphous alloy strip of 55 mm wide was prepared to have a composition expressed by (Co 0.94 Fe 0.06 ) 76.5 Si 14 B 9.5 .
  • the strip was wound in a substantially troidal form into a wound iron core having an outside diameter of 35 mm and an inside diameter of 25 mm.
  • the wound iron core was subjected to an annealing which was conducted at 320°C for 1 hour in a circumferentially directed magnetic field of 50 Oe.
  • the properties of the thus produced wound iron core are shown in Table 1 and Fig. 1 in comparison with those of wound iron cores produced from conventionally used 50 % Ni permalloy and supermalloy.
  • the wound iron core of Fe-base amorphous alloy appearing in Table 1 and Fig. 1 was made from an alloy having a composition expressed by Fe 71 Ni 10 Si 10 B 9 and had been subjected to an optimum annealing conducted in a magnetic field of 50 Oe as in the case of the iron core of the invention.
  • the wound iron core of the invention formed from Co-base amorphous alloy exhibits a superior rectangle ratio Br/B 10 of 96%, and a coercive force which is as small as less than 1/10 of that exhibited by the iron core formed from conventionally used 50% Ni permalloy.
  • the wound iron core made from the strip of Fe- is quite superior to the known wound iron core made from an Fe-base amorphous alloy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP19830101409 1982-02-15 1983-02-14 Gewickelter Eisenkern Expired EP0086485B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57022349A JPS58139408A (ja) 1982-02-15 1982-02-15 巻鉄心の製造方法
JP22349/82 1982-02-15

Publications (3)

Publication Number Publication Date
EP0086485A2 true EP0086485A2 (de) 1983-08-24
EP0086485A3 EP0086485A3 (en) 1985-05-15
EP0086485B1 EP0086485B1 (de) 1987-11-11

Family

ID=12080181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830101409 Expired EP0086485B1 (de) 1982-02-15 1983-02-14 Gewickelter Eisenkern

Country Status (3)

Country Link
EP (1) EP0086485B1 (de)
JP (1) JPS58139408A (de)
DE (1) DE3374481D1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0206774A1 (de) * 1985-06-21 1986-12-30 Hitachi, Ltd. Magnetkopf aus amorphem Magnetfilm hergestellt
DE3620617A1 (de) * 1985-06-20 1987-01-02 Hitachi Metals Ltd Wickelkern
US4745536A (en) * 1982-12-23 1988-05-17 Tokyo Shibaura Denki Kabushiki Kaisha Reactor for circuit containing semiconductor device
US5096513A (en) * 1989-09-01 1992-03-17 Kabushiki Kaisha Toshiba Very thin soft magnetic alloy strips and magnetic core and electromagnetic apparatus made therefrom
EP0503081A1 (de) * 1990-09-28 1992-09-16 Kabushiki Kaisha Toshiba Magnetkern
US5639566A (en) * 1990-09-28 1997-06-17 Kabushiki Kaisha Toshiba Magnetic core
WO1998012847A1 (de) * 1996-09-17 1998-03-26 Vacuumschmelze Gmbh Impulsübertrager für u-schnittstellen nach dem echokompensationsprinzip
WO1998026390A1 (de) * 1996-12-11 1998-06-18 Vacuumschmelze Gmbh Etiketten in akustomagnetischen diebstahlsicherungssystemen
CN102360670A (zh) * 2011-10-24 2012-02-22 南京信息工程大学 一种铁氧体磁层非晶软磁芯复合材料及其制备方法
CN106702245A (zh) * 2016-12-20 2017-05-24 华南理工大学 一种Gd‑Co基非晶纳米晶磁制冷材料及其制备方法
CN110400670A (zh) * 2019-04-18 2019-11-01 江西大有科技有限公司 高矩形比钴基非晶合金铁芯及其制备方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124703A (ja) * 1985-11-25 1987-06-06 Mitsui Petrochem Ind Ltd 電流センサ
KR100767719B1 (ko) 2006-08-29 2007-10-17 한국과학기술연구원 Ｔｉ 비정질 나노 분말과 그 제조방법
CN104109822B (zh) * 2014-06-05 2017-01-04 同济大学 一种含Ni钴基非晶巨磁阻抗合金薄带及其制备方法
CN104465063B (zh) * 2014-12-20 2017-05-31 泉州惠安长圣生物科技有限公司 一种耐腐蚀铁硅基磁芯的制备方法
CN105112816B (zh) * 2015-08-03 2017-05-31 河北工业大学 掺Si的低Sm含量Sm‑Co型非晶基磁性合金的制备方法
CN110616386B (zh) * 2019-09-12 2021-08-10 东南大学 一种高磁热效应稀土基高熵非晶合金及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116728A (en) * 1976-09-02 1978-09-26 General Electric Company Treatment of amorphous magnetic alloys to produce a wide range of magnetic properties
EP0005836A2 (de) * 1978-06-06 1979-12-12 Vacuumschmelze GmbH Induktives Bauelement und Verfahren zu seiner Herstellung
DE3033258A1 (de) * 1979-09-05 1981-03-19 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Verfahren zur waermebehandlung amorpher legierungsschichten

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7511398L (sv) * 1974-10-21 1976-04-22 Western Electric Co Magnetisk anordning
JPS581183B2 (ja) * 1976-09-16 1983-01-10 東北大学金属材料研究所長 磁束密度が高く角形比の大きい高透磁率非晶質合金
NL176090C (nl) * 1977-02-26 1985-02-18 Vacuumschmelze Gmbh Werkwijze voor het verminderen van de ommagnetisatieverliezen in dunne banden uit week-magnetische amorfe metaallegeringen.
JPS5441223A (en) * 1977-09-08 1979-04-02 Noboru Tsuya Magnetic characteristics improving method for high permeability amorphous magnetic alloy
JPS5633461A (en) * 1979-08-25 1981-04-03 Tdk Corp Improving method for characteristic of amorphous magnetic alloy thin strip
JPS5831053A (ja) * 1981-08-18 1983-02-23 Toshiba Corp 非晶質合金

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116728A (en) * 1976-09-02 1978-09-26 General Electric Company Treatment of amorphous magnetic alloys to produce a wide range of magnetic properties
US4116728B1 (en) * 1976-09-02 1994-05-03 Gen Electric Treatment of amorphous magnetic alloys to produce a wide range of magnetic properties
EP0005836A2 (de) * 1978-06-06 1979-12-12 Vacuumschmelze GmbH Induktives Bauelement und Verfahren zu seiner Herstellung
DE3033258A1 (de) * 1979-09-05 1981-03-19 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Verfahren zur waermebehandlung amorpher legierungsschichten

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745536A (en) * 1982-12-23 1988-05-17 Tokyo Shibaura Denki Kabushiki Kaisha Reactor for circuit containing semiconductor device
DE3620617A1 (de) * 1985-06-20 1987-01-02 Hitachi Metals Ltd Wickelkern
EP0206774A1 (de) * 1985-06-21 1986-12-30 Hitachi, Ltd. Magnetkopf aus amorphem Magnetfilm hergestellt
US4766039A (en) * 1985-06-21 1988-08-23 Hitachi, Ltd. Magnetic head made from amorphous magnetic film
US5096513A (en) * 1989-09-01 1992-03-17 Kabushiki Kaisha Toshiba Very thin soft magnetic alloy strips and magnetic core and electromagnetic apparatus made therefrom
EP0503081A4 (en) * 1990-09-28 1993-07-28 Kabushiki Kaisha Toshiba Magnetic core
EP0503081A1 (de) * 1990-09-28 1992-09-16 Kabushiki Kaisha Toshiba Magnetkern
US5639566A (en) * 1990-09-28 1997-06-17 Kabushiki Kaisha Toshiba Magnetic core
WO1998012847A1 (de) * 1996-09-17 1998-03-26 Vacuumschmelze Gmbh Impulsübertrager für u-schnittstellen nach dem echokompensationsprinzip
US6118365A (en) * 1996-09-17 2000-09-12 Vacuumschmelze Gmbh Pulse transformer for a u-interface operating according to the echo compensation principle, and method for the manufacture of a toroidal tape core contained in a U-interface pulse transformer
WO1998026390A1 (de) * 1996-12-11 1998-06-18 Vacuumschmelze Gmbh Etiketten in akustomagnetischen diebstahlsicherungssystemen
US6171694B1 (en) 1996-12-11 2001-01-09 Vacuumschmelze Gmbh Marker for use in magnetoelastic electronic article surveillance system
CN102360670A (zh) * 2011-10-24 2012-02-22 南京信息工程大学 一种铁氧体磁层非晶软磁芯复合材料及其制备方法
CN106702245A (zh) * 2016-12-20 2017-05-24 华南理工大学 一种Gd‑Co基非晶纳米晶磁制冷材料及其制备方法
CN110400670A (zh) * 2019-04-18 2019-11-01 江西大有科技有限公司 高矩形比钴基非晶合金铁芯及其制备方法

Also Published As

Publication number Publication date
EP0086485B1 (de) 1987-11-11
DE3374481D1 (en) 1987-12-17
EP0086485A3 (en) 1985-05-15
JPS58139408A (ja) 1983-08-18
JPS6328483B2 (de) 1988-06-08

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