GB805710A - Improvements in or relating to magnetically soft sintered bodies - Google Patents

Improvements in or relating to magnetically soft sintered bodies

Info

Publication number
GB805710A
GB805710A GB16918/56A GB1691856A GB805710A GB 805710 A GB805710 A GB 805710A GB 16918/56 A GB16918/56 A GB 16918/56A GB 1691856 A GB1691856 A GB 1691856A GB 805710 A GB805710 A GB 805710A
Authority
GB
United Kingdom
Prior art keywords
per cent
magnetically soft
ferrite
compressing
iron
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
Application number
GB16918/56A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB805710A publication Critical patent/GB805710A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • 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
    • 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

Abstract

805,710. Magnetic compositions. SIEMENSSCHUCKERTWERKE A.G. May 31, 1956 [May 31, 1955], No. 16918/56. Drawings to Specification. Class 38 (2). A magnetically soft sintered body is made by forming a mixture of magnetically soft metal or alloy powder and Ni-Zn, Mu-Zn, or other highresistance ferrite, the mixture containing 1-20 per cent of the ferrite, compressing at 6 to 8 tons/sq. cm., sintering in a vacuum or inert atmosphere, at between 900‹ and 1100‹ C., and thereafter compressing at 600‹ to 700‹ C. or compressing while cold and again sintering at 900‹-1200‹ C. This reduces the pore volume to less than 10 per cent, preferably less than 5 per cent of the volume of the body. To coat the particles which are flattened, the ferrite is finely divided and mixed with the metal particles while wet. The alloy powder should have high resistivity compared with iron, and may comprise an iron silicon alloy to which is added 30 per cent of a readily compressible iron powder.
GB16918/56A 1955-05-31 1956-05-31 Improvements in or relating to magnetically soft sintered bodies Expired GB805710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE805710X 1955-05-31

Publications (1)

Publication Number Publication Date
GB805710A true GB805710A (en) 1958-12-10

Family

ID=6722415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16918/56A Expired GB805710A (en) 1955-05-31 1956-05-31 Improvements in or relating to magnetically soft sintered bodies

Country Status (1)

Country Link
GB (1) GB805710A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116255A (en) * 1961-10-31 1963-12-31 Gen Electric Magnetic bodies containing magnetically coupled ferromagnetic and ferrimagnetic portions
US3502584A (en) * 1966-03-31 1970-03-24 Peter A Denes Magnetic composite materials
DE19960095A1 (en) * 1999-12-14 2001-07-05 Bosch Gmbh Robert Sintered soft magnetic composite and method for its production
WO2004070745A1 (en) * 2003-02-05 2004-08-19 Corporation Imfine Canada Inc. High performance magnetic composite for ac applications and a process for manufacturing the same
EP1521276A2 (en) * 2003-10-03 2005-04-06 Matsushita Electric Co., Ltd. Composite sintered magnetic material, its manufacturing method, and magnetic element using composite sintered magnetic material
US7686894B2 (en) 2002-06-06 2010-03-30 Robert Bosch Gmbh Magnetically soft powder composite material, method for manufacturing same, and its use

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116255A (en) * 1961-10-31 1963-12-31 Gen Electric Magnetic bodies containing magnetically coupled ferromagnetic and ferrimagnetic portions
US3502584A (en) * 1966-03-31 1970-03-24 Peter A Denes Magnetic composite materials
DE19960095A1 (en) * 1999-12-14 2001-07-05 Bosch Gmbh Robert Sintered soft magnetic composite and method for its production
US7686894B2 (en) 2002-06-06 2010-03-30 Robert Bosch Gmbh Magnetically soft powder composite material, method for manufacturing same, and its use
WO2004070745A1 (en) * 2003-02-05 2004-08-19 Corporation Imfine Canada Inc. High performance magnetic composite for ac applications and a process for manufacturing the same
US7510766B2 (en) 2003-02-05 2009-03-31 Corporation Imfine Inc. High performance magnetic composite for AC applications and a process for manufacturing the same
CN1771569B (en) * 2003-02-05 2010-05-26 加拿大易姆芬公司 High performance magnetic composite for AC applications and a process for manufacturing the same
EP1521276A2 (en) * 2003-10-03 2005-04-06 Matsushita Electric Co., Ltd. Composite sintered magnetic material, its manufacturing method, and magnetic element using composite sintered magnetic material
EP1521276A3 (en) * 2003-10-03 2006-05-10 Matsushita Electric Industrial Co., Ltd. Composite sintered magnetic material, its manufacturing method, and magnetic element using composite sintered magnetic material
US7422697B2 (en) * 2003-10-03 2008-09-09 Matsushita Electric Industrial Co., Ltd. Composite sintered magnetic material, its manufacturing method, and magnetic element using composite sintered magnetic material

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