ES377414A1 - Method of reducing the coercive force of permanent-magnetisable material - Google Patents

Method of reducing the coercive force of permanent-magnetisable material

Info

Publication number
ES377414A1
ES377414A1 ES377414A ES377414A ES377414A1 ES 377414 A1 ES377414 A1 ES 377414A1 ES 377414 A ES377414 A ES 377414A ES 377414 A ES377414 A ES 377414A ES 377414 A1 ES377414 A1 ES 377414A1
Authority
ES
Spain
Prior art keywords
permanent
reducing
coercive force
magnetisable material
block
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
ES377414A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES377414A1 publication Critical patent/ES377414A1/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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/023—Hydrogen absorption
    • 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
    • B22F1/14—Treatment of metallic powder
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

Magnetic bodies are obtained by compacting, before, after or during magnetization, a powdered rare-earth-cobalt compound of the formula M 5 R where M=Co or a combination of Co with one or more of Fe, Ni and Cu and R is one, or more lanthanide, yttrium or thorium. The material is reduced in coercivity by application of a pressure of hydrogen gas until it contains at least 0À2 moles per mole of M 5 R before magnetization. ,In an example SmCo 5 is pulverized, orientated in a magnetic field, compressed without a binder to form a block and the block was subjected to a hydrogen pressure of 30 atmospheres, and magnetized.
ES377414A 1969-03-14 1970-03-12 Method of reducing the coercive force of permanent-magnetisable material Expired ES377414A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6903931A NL6903931A (en) 1969-03-14 1969-03-14

Publications (1)

Publication Number Publication Date
ES377414A1 true ES377414A1 (en) 1972-07-01

Family

ID=19806410

Family Applications (1)

Application Number Title Priority Date Filing Date
ES377414A Expired ES377414A1 (en) 1969-03-14 1970-03-12 Method of reducing the coercive force of permanent-magnetisable material

Country Status (11)

Country Link
US (1) US3647574A (en)
AT (1) AT302501B (en)
AU (1) AU1251670A (en)
BE (1) BE747286A (en)
BR (1) BR7017383D0 (en)
CA (1) CA918044A (en)
CH (1) CH524876A (en)
ES (1) ES377414A1 (en)
FR (1) FR2038898A5 (en)
GB (1) GB1262594A (en)
NL (1) NL6903931A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1554384A (en) * 1977-04-15 1979-10-17 Magnetic Polymers Ltd Rare earth metal alloy magnets

Also Published As

Publication number Publication date
US3647574A (en) 1972-03-07
AT302501B (en) 1972-10-25
NL6903931A (en) 1970-09-16
AU1251670A (en) 1971-09-16
CA918044A (en) 1973-01-02
BR7017383D0 (en) 1973-01-16
DE2008191B2 (en) 1977-06-30
CH524876A (en) 1972-06-30
BE747286A (en) 1970-09-14
FR2038898A5 (en) 1971-01-08
GB1262594A (en) 1972-02-02
DE2008191A1 (en) 1970-10-01

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