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EP0088992A3 - Method for manufacturing an object of soft-magnetic material by bonding together a mass of powder grains - Google Patents

Method for manufacturing an object of soft-magnetic material by bonding together a mass of powder grains Download PDF

Info

Publication number
EP0088992A3
EP0088992A3 EP83102285A EP83102285A EP0088992A3 EP 0088992 A3 EP0088992 A3 EP 0088992A3 EP 83102285 A EP83102285 A EP 83102285A EP 83102285 A EP83102285 A EP 83102285A EP 0088992 A3 EP0088992 A3 EP 0088992A3
Authority
EP
European Patent Office
Prior art keywords
grains
iron
oxide
magnetic material
soft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83102285A
Other languages
German (de)
French (fr)
Other versions
EP0088992A2 (en
Inventor
Hans Dr.Ing. Larker
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of EP0088992A2 publication Critical patent/EP0088992A2/en
Publication of EP0088992A3 publication Critical patent/EP0088992A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/16—Metallic particles coated with a non-metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • 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
    • H01F1/33—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 mixtures of metallic and non-metallic particles; metallic particles having oxide skin

Landscapes

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

Abstract

A method for manufacturing an object of soft-magnetic material by bonding together a mass of powder grains of iron-based soft-magnetic material in the form of pure iron or in the form of iron containing silicon, aluminium and/or titanium. The grains are provided either with a coating (2) containing iron oxide chemically bonded to the grains and, at least in those cases where the iron-based material consists of pure iron, containing in addition thereto an oxide of silicon, aluminium and/or titanium, or the grains are provided with a coating (2) containing a reaction product of iron oxide, which oxide is chemically bonded to the grains, and an oxide of silicon, aluminium and/or titanium. The grains provided with said coating are subjected to an isostatic pressing at a temperature of at most 900°C and at a pressure necessary for forming a coherent, compact body of the powder mass. The coating preferably has a thickness of 0.01 - 0.5 µm.
EP83102285A 1982-03-17 1983-03-09 Method for manufacturing an object of soft-magnetic material by bonding together a mass of powder grains Withdrawn EP0088992A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8201678 1982-03-17
SE8201678A SE8201678L (en) 1982-03-17 1982-03-17 SET TO MAKE FORMS OF SOFT MAGNETIC MATERIAL

Publications (2)

Publication Number Publication Date
EP0088992A2 EP0088992A2 (en) 1983-09-21
EP0088992A3 true EP0088992A3 (en) 1984-12-19

Family

ID=20346286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102285A Withdrawn EP0088992A3 (en) 1982-03-17 1983-03-09 Method for manufacturing an object of soft-magnetic material by bonding together a mass of powder grains

Country Status (3)

Country Link
EP (1) EP0088992A3 (en)
JP (1) JPS58171501A (en)
SE (1) SE8201678L (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0611008B2 (en) * 1983-11-16 1994-02-09 株式会社東芝 Dust core
JPS61124038A (en) * 1984-11-20 1986-06-11 Toshiba Corp Deflection yoke for electromagnetic deflection type cathode ray tube and manufacture thereof
EP0205786B1 (en) * 1985-06-26 1990-01-31 Kabushiki Kaisha Toshiba Magnetic core and preparation thereof
DE69014210T2 (en) * 1989-01-10 1995-06-22 Matsushita Electric Ind Co Ltd Magnetic head and manufacturing process.
JPH0682577B2 (en) * 1989-01-18 1994-10-19 新日本製鐵株式会社 Fe-Si alloy dust core and method of manufacturing the same
JPH0779101B2 (en) * 1989-05-24 1995-08-23 株式会社東芝 Manufacturing method of semiconductor device
DE69031250T2 (en) * 1989-06-09 1997-12-04 Matsushita Electric Ind Co Ltd Magnetic material
JPH0312809A (en) * 1989-06-09 1991-01-21 Matsushita Electric Ind Co Ltd Nanocomposite substrate
DE69028360T2 (en) * 1989-06-09 1997-01-23 Matsushita Electric Ind Co Ltd Composite material and process for its manufacture
JPH04226003A (en) * 1990-05-09 1992-08-14 Tdk Corp Composite soft magnetic material and coated particles for composite soft magnetic material
JPH05109520A (en) * 1991-08-19 1993-04-30 Tdk Corp Composite soft magnetic material
DE69703572T2 (en) * 1996-09-25 2001-05-31 Shoei Chemical Inc., Tokyo Nickel powder and process of its manufacture
JP3206496B2 (en) * 1997-06-02 2001-09-10 昭栄化学工業株式会社 Metal powder and method for producing the same
US6102980A (en) * 1997-03-31 2000-08-15 Tdk Corporation Dust core, ferromagnetic powder composition therefor, and method of making
SE512783C2 (en) * 1998-03-30 2000-05-15 Hoeganaes Ab Stator assembly for an electric machine
DE19945592A1 (en) * 1999-09-23 2001-04-12 Bosch Gmbh Robert Soft magnetic material and process for its production
DE19960095A1 (en) * 1999-12-14 2001-07-05 Bosch Gmbh Robert Sintered soft magnetic composite and method for its production
DE10031923A1 (en) * 2000-06-30 2002-01-17 Bosch Gmbh Robert Soft magnetic material with a heterogeneous structure and process for its production
CA2418497A1 (en) 2003-02-05 2004-08-05 Patrick Lemieux High performance soft magnetic parts made by powder metallurgy for ac applications
WO2006006646A1 (en) * 2004-07-14 2006-01-19 Mycoal Products Corporation Active iron powder, exothermal composition and exothermal article
JP6930722B2 (en) * 2017-06-26 2021-09-01 太陽誘電株式会社 Manufacturing method of magnetic material, electronic component and magnetic material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1669648A (en) * 1927-01-03 1928-05-15 Western Electric Co Magnetic material
US2068658A (en) * 1934-06-20 1937-01-26 Associated Electric Lab Inc Inductance coil core
US2531445A (en) * 1945-11-23 1950-11-28 Int Standard Electric Corp Manufacture of magnetic bodies from compressed powdered materials
US3814598A (en) * 1970-12-29 1974-06-04 Chromalloy American Corp Wear resistant powder metal magnetic pole piece made from oxide coated fe-al-si powders
FR2391018A1 (en) * 1977-05-16 1978-12-15 Carpenter Technology Corp FRAGILE METALLURGIC PRODUCT MADE BY SINTERING

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1669648A (en) * 1927-01-03 1928-05-15 Western Electric Co Magnetic material
US2068658A (en) * 1934-06-20 1937-01-26 Associated Electric Lab Inc Inductance coil core
US2531445A (en) * 1945-11-23 1950-11-28 Int Standard Electric Corp Manufacture of magnetic bodies from compressed powdered materials
US3814598A (en) * 1970-12-29 1974-06-04 Chromalloy American Corp Wear resistant powder metal magnetic pole piece made from oxide coated fe-al-si powders
FR2391018A1 (en) * 1977-05-16 1978-12-15 Carpenter Technology Corp FRAGILE METALLURGIC PRODUCT MADE BY SINTERING

Also Published As

Publication number Publication date
JPS58171501A (en) 1983-10-08
EP0088992A2 (en) 1983-09-21
SE8201678L (en) 1983-09-18

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): CH DE FR GB LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850820

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LARKER, HANS, DR.ING.