GB1359313A - Process for the production of permanent magnet material and material obtained thereby - Google Patents

Process for the production of permanent magnet material and material obtained thereby

Info

Publication number
GB1359313A
GB1359313A GB4177871A GB4177871A GB1359313A GB 1359313 A GB1359313 A GB 1359313A GB 4177871 A GB4177871 A GB 4177871A GB 4177871 A GB4177871 A GB 4177871A GB 1359313 A GB1359313 A GB 1359313A
Authority
GB
United Kingdom
Prior art keywords
permanent magnet
sept
impurity
rod
production
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
GB4177871A
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.)
Battelle Memorial Institute Inc
Original Assignee
Battelle Memorial Institute Inc
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 Battelle Memorial Institute Inc filed Critical Battelle Memorial Institute Inc
Publication of GB1359313A publication Critical patent/GB1359313A/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
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/52—Alloys

Abstract

1359313 Progressive freezing BATTELLE MEMORIAL INSTITUTE 8 Sept 1971 [8 Sept 1970] 41778/71 Heading BIS [Also in Division B3] A permanent magnet is formed of a substance having anisotropic magnetocrystalline properties by progressive freezing of the material in a crucible 9 in a furnace having heating elements 2 (resistance heating), or by zone melting, the material having an impurity which collects at the boundaries between the adjacent juxtaposed columnar crystals which form. The material of which the magnet is formed has the formula TCo 5 where T is at least one of the elements Y, La, Ce, Pr, Nd, Pm, Sm and Th, or possibly a mixture of some of them. The impurity may be Cu, Sn, Ni or Mn. A magnetic field applied across the rod after it forms gives it its magnetism. In the apparatus shown 8a, 8b and 6 are cooling coils and a flow of H 2 also provides cooling, an alternative apparatus having a die with a chill plate at one end in which the rod of material is formed, this optionally containing a seed.
GB4177871A 1970-09-08 1971-09-08 Process for the production of permanent magnet material and material obtained thereby Expired GB1359313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1336870A CH532126A (en) 1970-09-08 1970-09-08 Method of manufacturing a material for permanent magnets and material obtained by this method

Publications (1)

Publication Number Publication Date
GB1359313A true GB1359313A (en) 1974-07-10

Family

ID=4391812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4177871A Expired GB1359313A (en) 1970-09-08 1971-09-08 Process for the production of permanent magnet material and material obtained thereby

Country Status (6)

Country Link
AT (1) AT319621B (en)
CH (1) CH532126A (en)
DE (1) DE2143866A1 (en)
FR (1) FR2107404A5 (en)
GB (1) GB1359313A (en)
NL (1) NL7112296A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710242A (en) * 1980-08-11 1987-12-01 Fujitsu Limited Material for temperature sensitive elements

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208225A (en) * 1975-05-05 1980-06-17 Les Fabriques D'assortiments Reunies Directionally solidified ductile magnetic alloys magnetically hardened by precipitation hardening
CH601481A5 (en) * 1975-05-05 1978-07-14 Far Fab Assortiments Reunies
EP0018942B1 (en) * 1979-04-12 1984-07-04 Les Fabriques d'Assortiments Réunies Ductile magnetic alloys, method of making same and magnetic body
CN112185474B (en) * 2020-09-07 2024-02-06 西安理工大学 Numerical simulation method for directional solidification process of Ti-45% Al alloy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710242A (en) * 1980-08-11 1987-12-01 Fujitsu Limited Material for temperature sensitive elements

Also Published As

Publication number Publication date
AT319621B (en) 1974-12-27
CH532126A (en) 1972-12-31
FR2107404A5 (en) 1972-05-05
NL7112296A (en) 1972-03-10
DE2143866A1 (en) 1972-03-09

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees