ES360420A1 - Fine particle magnetic material - Google Patents

Fine particle magnetic material

Info

Publication number
ES360420A1
ES360420A1 ES360420A ES360420A ES360420A1 ES 360420 A1 ES360420 A1 ES 360420A1 ES 360420 A ES360420 A ES 360420A ES 360420 A ES360420 A ES 360420A ES 360420 A1 ES360420 A1 ES 360420A1
Authority
ES
Spain
Prior art keywords
alloy
particles
magnet
cathode
additive
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
ES360420A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of ES360420A1 publication Critical patent/ES360420A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12181—Composite powder [e.g., coated, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12681—Ga-, In-, Tl- or Group VA metal-base component

Landscapes

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

Abstract

A magnet comprises Sb-coated single magnetic domain particles of Fe or Fe-Co alloy in a Pb matrix which contains (per part by wt. of Pb) 0À001-0À04 parts by wt. of Ca or a Snbased alloy, or 0À001-0À02 parts by wt. of Sn. Specified Sn-base alloys are 14À3% Cu, balance Sn 6À5% Bi, balance Sn, and In or Te-containing alloys. The magnet may be made by electrolytically depositing magnetic particles into a liquid Hg cathode, heat-aging, adding Pb and Sb, followed by the Sn, Ca or Sn alloy, separating the cathode, e.g. by vacuum distillation, and compressing the residue. The mixture of Hg, Pb, Sb-coated particles and additive may be heated to ensure uniform dispersion of the additive, which inhibits dimensional instability and whisker growth in the finished magnet. In an example, the mixture is compressed in presence of a magnetic field to align the magnetic particles, and to reduce the Hg content. Remaining Hg is distilled from the preforms, which are then ground, classified and compressed with a lubricant.
ES360420A 1967-12-18 1968-11-19 Fine particle magnetic material Expired ES360420A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69164067A 1967-12-18 1967-12-18

Publications (1)

Publication Number Publication Date
ES360420A1 true ES360420A1 (en) 1970-07-01

Family

ID=24777355

Family Applications (1)

Application Number Title Priority Date Filing Date
ES360420A Expired ES360420A1 (en) 1967-12-18 1968-11-19 Fine particle magnetic material

Country Status (8)

Country Link
US (1) US3555265A (en)
DK (1) DK119567B (en)
ES (1) ES360420A1 (en)
FR (1) FR1595223A (en)
GB (1) GB1252588A (en)
NL (1) NL6818065A (en)
NO (1) NO124614B (en)
SE (1) SE359956B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661726A (en) * 1970-03-23 1972-05-09 Peter A Denes Method of making permanent magnets
JPS5832767B2 (en) * 1980-01-24 1983-07-15 ヤマハ株式会社 Manufacturing method for hard magnetic materials
US5015533A (en) * 1988-03-10 1991-05-14 Texas Instruments Incorporated Member of a refractory metal material of selected shape and method of making
US4885214A (en) * 1988-03-10 1989-12-05 Texas Instruments Incorporated Composite material and methods for making
WO1999066107A1 (en) * 1998-06-15 1999-12-23 The Boeing Company Making particulates of controlled dimensions
US6060181A (en) * 1998-08-17 2000-05-09 Mcdonnell Douglas Corporation Low loss magnetic alloy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2271040A (en) * 1939-04-11 1942-01-27 Hartford Nat Bank & Trust Co Magnetic material and process of making the same
US2974104A (en) * 1955-04-08 1961-03-07 Gen Electric High-energy magnetic material
US2999778A (en) * 1957-12-16 1961-09-12 Gen Electric Antimonide coated magnetic materials with lead and lead-antimony matrices
US2999777A (en) * 1957-12-16 1961-09-12 Gen Electric Antimonide coated magnetic materials
US3073728A (en) * 1960-08-30 1963-01-15 Gen Electric Magnetic materials

Also Published As

Publication number Publication date
SE359956B (en) 1973-09-10
GB1252588A (en) 1971-11-10
NL6818065A (en) 1969-06-20
NO124614B (en) 1972-05-08
DE1809587B2 (en) 1976-05-06
DK119567B (en) 1971-01-25
DE1809587A1 (en) 1969-07-17
FR1595223A (en) 1970-06-08
US3555265A (en) 1971-01-12

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