GB1372287A - Pulverulent compounds of cobalt and rare earth metals - Google Patents

Pulverulent compounds of cobalt and rare earth metals

Info

Publication number
GB1372287A
GB1372287A GB2754772A GB2754772A GB1372287A GB 1372287 A GB1372287 A GB 1372287A GB 2754772 A GB2754772 A GB 2754772A GB 2754772 A GB2754772 A GB 2754772A GB 1372287 A GB1372287 A GB 1372287A
Authority
GB
United Kingdom
Prior art keywords
rare earth
earth metals
ampoule
june
cobalt
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
GB2754772A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1372287A publication Critical patent/GB1372287A/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
    • H01F1/06—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

1372287 Pulverized cobalt compound BBC BROWN BOVERI & CO Ltd 13 June 1972 [15 June 1971] 27547/72 Heading C1A [Also in Division C7] In a process for the production of a pulverized compound of Co and one or more rare earth metals, for use in magnets having a high coercive force, Co powder 1 and scraps 2 of rare earth metal, e.g. Sm are placed in a tantalum ampoule 3 with a transport agent, e.g. iodine, and grinding weights 4 of Mo, Ta or W. The ampoule 3 is evacuated, sealed inside a quartz ampoule 5, placed in an oven at 750-1150‹ C. and rotated at 10-500 r.p.m. After reaction the iodides are washed out of the product leaving Co5Sm particles of 1-5 microns size and having a coercive force of 20,000 oersteds. In another embodiment Fig. 2 (not shown) no transport agent is used and the Sm and the Co and grinding weights are in separate compartments communicating so that Sm vapour can react with Co. Other rare earth metals can be alloyed with Co, one example of a product being CeMM0À5Sm0À5Co where MM denotes misch metal.
GB2754772A 1971-06-15 1972-06-13 Pulverulent compounds of cobalt and rare earth metals Expired GB1372287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH868671A CH577561A5 (en) 1971-06-15 1971-06-15

Publications (1)

Publication Number Publication Date
GB1372287A true GB1372287A (en) 1974-10-30

Family

ID=4343527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2754772A Expired GB1372287A (en) 1971-06-15 1972-06-13 Pulverulent compounds of cobalt and rare earth metals

Country Status (9)

Country Link
US (1) US3855017A (en)
AT (1) AT311067B (en)
CA (1) CA970186A (en)
CH (1) CH577561A5 (en)
DE (1) DE2134212B2 (en)
FR (1) FR2142389A5 (en)
GB (1) GB1372287A (en)
IT (1) IT956507B (en)
NL (1) NL7208021A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5045289A (en) * 1989-10-04 1991-09-03 Research Corporation Technologies, Inc. Formation of rare earth carbonates using supercritical carbon dioxide
US9090964B2 (en) * 2013-12-19 2015-07-28 Intel Corporation Additives to improve the performance of a precursor source for cobalt deposition

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126346A (en) * 1964-03-24 Ferromagnetic compositions and their preparation
US64416A (en) * 1867-05-07 James hart
US2592783A (en) * 1946-04-17 1952-04-15 Aspegren Olof Erik August Rotary heat exchanger
US2991176A (en) * 1959-04-15 1961-07-04 L D Caulk Company Method for making dental amalgams and product thereof
US3424578A (en) * 1967-06-05 1969-01-28 Us Air Force Method of producing permanent magnets of rare earth metals containing co,or mixtures of co,fe and mn
NL6907499A (en) * 1969-05-14 1970-11-17
US3578417A (en) * 1969-06-30 1971-05-11 Pan American Sulphur Co Vaporizing sulfur from ore by direct contact with heated pebbles
DE1944432C3 (en) * 1969-09-02 1980-03-20 Strnat, Karl, Prof. Dr., La Jolla, Calif. (V.St.A.) Permanent magnet

Also Published As

Publication number Publication date
DE2134212C3 (en) 1974-03-28
FR2142389A5 (en) 1973-01-26
US3855017A (en) 1974-12-17
AT311067B (en) 1973-10-25
CA970186A (en) 1975-07-01
IT956507B (en) 1973-10-10
CH577561A5 (en) 1976-07-15
NL7208021A (en) 1972-12-19
DE2134212B2 (en) 1973-08-30
DE2134212A1 (en) 1973-01-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]