DE3570942D1 - Permanent magnet alloy - Google Patents

Permanent magnet alloy

Info

Publication number
DE3570942D1
DE3570942D1 DE8585306148T DE3570942T DE3570942D1 DE 3570942 D1 DE3570942 D1 DE 3570942D1 DE 8585306148 T DE8585306148 T DE 8585306148T DE 3570942 T DE3570942 T DE 3570942T DE 3570942 D1 DE3570942 D1 DE 3570942D1
Authority
DE
Germany
Prior art keywords
permanent magnet
alloy
magnet alloy
dysprosium
neodymium
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
DE8585306148T
Other languages
German (de)
Inventor
Kalathur S V L Narasimham
Bao-Min Ma
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.)
Crucible Materials Corp
Original Assignee
Crucible Materials Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24728160&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3570942(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Crucible Materials Corp filed Critical Crucible Materials Corp
Application granted granted Critical
Publication of DE3570942D1 publication Critical patent/DE3570942D1/en
Expired 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
    • H01F1/032—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
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys

Landscapes

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

Abstract

A permanent magnet alloy consisting of, in weight percent, 1 to 10 dysprosium, 20 to 37 neodymium, with the total dysprosium and neodymium content being within the range of 30 to 38, 0.8 to 1.33 boron and balance iron and impurities usual in metal alloys. This alloy is characterized by high resistance to demagnetization at elevated temperatures with the alloy content being of relatively low cost.
DE8585306148T 1984-12-10 1985-08-30 Permanent magnet alloy Expired DE3570942D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67973984A 1984-12-10 1984-12-10

Publications (1)

Publication Number Publication Date
DE3570942D1 true DE3570942D1 (en) 1989-07-13

Family

ID=24728160

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585306148T Expired DE3570942D1 (en) 1984-12-10 1985-08-30 Permanent magnet alloy

Country Status (5)

Country Link
EP (1) EP0185439B1 (en)
JP (1) JPS61139641A (en)
AT (1) ATE43932T1 (en)
CA (1) CA1273231A (en)
DE (1) DE3570942D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4837109A (en) * 1986-07-21 1989-06-06 Hitachi Metals, Ltd. Method of producing neodymium-iron-boron permanent magnet
EP0277416A3 (en) * 1987-02-04 1990-05-16 Crucible Materials Corporation Permanent magnet alloy for elevated temperature applications
JP2001332410A (en) * 2000-05-22 2001-11-30 Seiko Epson Corp Magnet powder, its manufacturing method, and bond magnet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8504404A3 (en) * 1981-06-16 1985-04-16 Proyectos Magneticos S A Proma Permanent magnet alloy
JPS59163802A (en) * 1983-03-08 1984-09-14 Sumitomo Special Metals Co Ltd Permanent magnet material
EP0108474B2 (en) * 1982-09-03 1995-06-21 General Motors Corporation RE-TM-B alloys, method for their production and permanent magnets containing such alloys
JPS59204209A (en) * 1983-05-06 1984-11-19 Sumitomo Special Metals Co Ltd Isotropic permanent magnet and manufacture thereof
JPS59215460A (en) * 1983-05-21 1984-12-05 Sumitomo Special Metals Co Ltd Permanent magnet material and its production

Also Published As

Publication number Publication date
ATE43932T1 (en) 1989-06-15
CA1273231A (en) 1990-08-28
JPS61139641A (en) 1986-06-26
EP0185439B1 (en) 1989-06-07
EP0185439A1 (en) 1986-06-25

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation