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GB1298977A - Method of manufacturing an anisotropic permanent magnetic body - Google Patents

Method of manufacturing an anisotropic permanent magnetic body

Info

Publication number
GB1298977A
GB1298977A GB44504/70A GB4450470A GB1298977A GB 1298977 A GB1298977 A GB 1298977A GB 44504/70 A GB44504/70 A GB 44504/70A GB 4450470 A GB4450470 A GB 4450470A GB 1298977 A GB1298977 A GB 1298977A
Authority
GB
United Kingdom
Prior art keywords
orientating
compacting
sintered
sept
sintering
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
GB44504/70A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1298977A publication Critical patent/GB1298977A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on 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
    • H01F1/032—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
    • 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
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

1298977 Sintered permanent magnets PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 Sept 1970 [20 Sept 1969] 44504/70 Heading C7D A sintered anisotropic permanent magnet alloy in the system M-R where M is Co with or without Fe, Ni and Cu and R is at least one of Y, Th and the rare earths, the system including M 5 R, is made by crushing and mixing a cast alloy with an atomic ratio M:R<5 with a cast alloy having a M:R atomic ratio >5, orientating the powder in a magnetic field and then compacting and sintering at 800-1250‹C. The steps of crushing, mixing, orientating, compacting and sintering are carried out in a protecting atmosphere containing a maximum of 100 p.p.m. oxygen and/or water vapour. The cast alloys preferably consist of Sm 2 Co 7 and SmCo 5.4 which are ground and mixed together under argon. After orientating in a field of 40, 000 Or and compacting to 82% density the compact and a Th getter are wrapped in Mo and sintered at 1120‹C for 30 mins.
GB44504/70A 1969-09-20 1970-09-17 Method of manufacturing an anisotropic permanent magnetic body Expired GB1298977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6914311A NL6914311A (en) 1969-09-20 1969-09-20

Publications (1)

Publication Number Publication Date
GB1298977A true GB1298977A (en) 1972-12-06

Family

ID=19807953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44504/70A Expired GB1298977A (en) 1969-09-20 1970-09-17 Method of manufacturing an anisotropic permanent magnetic body

Country Status (11)

Country Link
US (1) US3723197A (en)
JP (1) JPS4913132B1 (en)
AT (1) AT301891B (en)
AU (1) AU1955770A (en)
BE (1) BE756431A (en)
CH (1) CH544387A (en)
DE (1) DE2043000A1 (en)
ES (1) ES383757A1 (en)
FR (1) FR2064818A5 (en)
GB (1) GB1298977A (en)
NL (1) NL6914311A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919004A (en) * 1970-04-30 1975-11-11 Gen Electric Liquid sintered cobalt-rare earth intermetallic product
US3905839A (en) * 1971-12-17 1975-09-16 Gen Electric Liquid sintered cobalt-rare earth intermetallic product
US3919003A (en) * 1971-12-17 1975-11-11 Gen Electric Sintered cobalt-rare earth intermetallic product
US3919002A (en) * 1972-06-15 1975-11-11 Gen Electric Sintered cobalt-rare earth intermetallic product
NL7217051A (en) * 1972-12-15 1974-06-18
US3909647A (en) * 1973-06-22 1975-09-30 Bendix Corp Rotor assembly for permanent magnet generator
US4075042A (en) * 1973-11-16 1978-02-21 Raytheon Company Samarium-cobalt magnet with grain growth inhibited SmCo5 crystals
FR2295130A1 (en) * 1974-08-27 1976-07-16 Aimants Ugimag Sa COMPOSITION FOR PERMANENT MAGNETS OF THE "RARE-EARTH - TRANSITION METALS" FAMILY AND METHOD OF MANUFACTURING SUCH A MAGNET
JPS5241198U (en) * 1975-09-17 1977-03-24
US4152178A (en) * 1978-01-24 1979-05-01 The United States Of America As Represented By The United States Department Of Energy Sintered rare earth-iron Laves phase magnetostrictive alloy product and preparation thereof
JPS5847842B2 (en) * 1978-11-04 1983-10-25 富士通株式会社 Manufacturing method of thermosensor
US4224067A (en) * 1979-04-27 1980-09-23 The United States Of America As Represented By The Secretary Of The Army Permanent magnet materials
US4601754A (en) * 1984-03-30 1986-07-22 Union Oil Company Of California Rare earth-containing magnets
US4668283A (en) * 1984-06-25 1987-05-26 Mitsui Toatsu Chemicals, Incorporated Magnetic powder and production process thereof
WO1998045504A1 (en) * 1997-04-04 1998-10-15 University Of Southern California Article, method, and apparatus for electrochemical fabrication
US10416192B2 (en) 2003-02-04 2019-09-17 Microfabrica Inc. Cantilever microprobes for contacting electronic components
US8613846B2 (en) * 2003-02-04 2013-12-24 Microfabrica Inc. Multi-layer, multi-material fabrication methods for producing micro-scale and millimeter-scale devices with enhanced electrical and/or mechanical properties
US9671429B2 (en) 2003-05-07 2017-06-06 University Of Southern California Multi-layer, multi-material micro-scale and millimeter-scale devices with enhanced electrical and/or mechanical properties
US10641792B2 (en) 2003-12-31 2020-05-05 University Of Southern California Multi-layer, multi-material micro-scale and millimeter-scale devices with enhanced electrical and/or mechanical properties
US11262383B1 (en) 2018-09-26 2022-03-01 Microfabrica Inc. Probes having improved mechanical and/or electrical properties for making contact between electronic circuit elements and methods for making
US12078657B2 (en) 2019-12-31 2024-09-03 Microfabrica Inc. Compliant pin probes with extension springs, methods for making, and methods for using

Also Published As

Publication number Publication date
US3723197A (en) 1973-03-27
ES383757A1 (en) 1973-03-01
DE2043000A1 (en) 1971-04-15
AT301891B (en) 1972-09-25
CH544387A (en) 1973-11-15
NL6914311A (en) 1971-03-23
JPS4913132B1 (en) 1974-03-29
FR2064818A5 (en) 1971-07-23
AU1955770A (en) 1972-03-09
BE756431A (en) 1971-03-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees