EP0331286A3 - Rapid compaction of rare earth-transition metal alloys in a fluid-filled die - Google Patents

Rapid compaction of rare earth-transition metal alloys in a fluid-filled die Download PDF

Info

Publication number
EP0331286A3
EP0331286A3 EP89300871A EP89300871A EP0331286A3 EP 0331286 A3 EP0331286 A3 EP 0331286A3 EP 89300871 A EP89300871 A EP 89300871A EP 89300871 A EP89300871 A EP 89300871A EP 0331286 A3 EP0331286 A3 EP 0331286A3
Authority
EP
European Patent Office
Prior art keywords
transition metal
rare earth
fluid
metal alloys
rapid compaction
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Withdrawn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
EP89300871A
Other languages
German (de)
French (fr)
Other versions
EP0331286A2 (en
Inventor
Peter Vernia
Elizabeth F. Harasek
Ronald G. Lanzi
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of EP0331286A2 publication Critical patent/EP0331286A2/en
Publication of EP0331286A3 publication Critical patent/EP0331286A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses
    • B30B11/002—Isostatic press chambers; Press stands therefor
    • 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
    • B22F3/1208—Containers or coating used therefor
    • 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
    • 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
    • H01F1/032—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
    • H01F1/0556—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together pressed
    • 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
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0576—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together pressed, e.g. hot working
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0266—Moulding; Pressing

Landscapes

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

Abstract

A novel method is provided for making large, fully densified rare earth-transition metal magnets. The method involves rapid compaction of very finely crystalline rare earth-transition metal alloy particles (2) retained in a die (12), using pressure applied to a substantially incompressible fluid medium (6) surrounding said particles (2).
EP89300871A 1988-03-03 1989-01-30 Rapid compaction of rare earth-transition metal alloys in a fluid-filled die Withdrawn EP0331286A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16355888A 1988-03-03 1988-03-03
US163558 1988-03-03

Publications (2)

Publication Number Publication Date
EP0331286A2 EP0331286A2 (en) 1989-09-06
EP0331286A3 true EP0331286A3 (en) 1989-11-02

Family

ID=22590556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89300871A Withdrawn EP0331286A3 (en) 1988-03-03 1989-01-30 Rapid compaction of rare earth-transition metal alloys in a fluid-filled die

Country Status (2)

Country Link
EP (1) EP0331286A3 (en)
JP (1) JPH01287204A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0102103D0 (en) 2001-06-13 2001-06-13 Hoeganaes Ab High density soft magnetic products and method for the preparation thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094164A1 (en) * 1982-04-28 1983-11-16 Kelsey-Hayes Company Method of consolidating material with a cast pressure transmitter
EP0133758A2 (en) * 1983-08-04 1985-03-06 General Motors Corporation Iron-rare earth-boron permanent magnets by hot working
JPS6089533A (en) * 1983-10-20 1985-05-20 Namiki Precision Jewel Co Ltd Production of co-fe permanent magnet alloy
GB2165862A (en) * 1984-10-18 1986-04-23 Hitachi Shipbuilding Eng Co Press sintering compact in melt
US4612161A (en) * 1983-10-20 1986-09-16 The United States Of America As Represented By The United States Department Of Energy Fabrication of metallic glass structures
EP0196448A1 (en) * 1985-02-25 1986-10-08 Nippondenso Co., Ltd. Method for producing amorphous compact
EP0203311A1 (en) * 1985-05-24 1986-12-03 Kernforschungszentrum Karlsruhe Gmbh Process for manufacturing articles with isotropic properties

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62176700A (en) * 1986-01-29 1987-08-03 Mitsubishi Heavy Ind Ltd Device and method for hydrostatic pressure treatment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094164A1 (en) * 1982-04-28 1983-11-16 Kelsey-Hayes Company Method of consolidating material with a cast pressure transmitter
EP0133758A2 (en) * 1983-08-04 1985-03-06 General Motors Corporation Iron-rare earth-boron permanent magnets by hot working
JPS6089533A (en) * 1983-10-20 1985-05-20 Namiki Precision Jewel Co Ltd Production of co-fe permanent magnet alloy
US4612161A (en) * 1983-10-20 1986-09-16 The United States Of America As Represented By The United States Department Of Energy Fabrication of metallic glass structures
GB2165862A (en) * 1984-10-18 1986-04-23 Hitachi Shipbuilding Eng Co Press sintering compact in melt
EP0196448A1 (en) * 1985-02-25 1986-10-08 Nippondenso Co., Ltd. Method for producing amorphous compact
EP0203311A1 (en) * 1985-05-24 1986-12-03 Kernforschungszentrum Karlsruhe Gmbh Process for manufacturing articles with isotropic properties

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 9, No. 228 (C-303)[1951], 13th September 1985; & JP-A-60 089 533 (NAMIKI SEIMITSU HOUSEKI K.K.) (20-05-1985) *

Also Published As

Publication number Publication date
JPH01287204A (en) 1989-11-17
EP0331286A2 (en) 1989-09-06

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