FR2417168A1 - Procede de preparation de poudres de ferrites et poudres ou aimants permanents ainsi obtenus - Google Patents

Procede de preparation de poudres de ferrites et poudres ou aimants permanents ainsi obtenus

Info

Publication number
FR2417168A1
FR2417168A1 FR7903560A FR7903560A FR2417168A1 FR 2417168 A1 FR2417168 A1 FR 2417168A1 FR 7903560 A FR7903560 A FR 7903560A FR 7903560 A FR7903560 A FR 7903560A FR 2417168 A1 FR2417168 A1 FR 2417168A1
Authority
FR
France
Prior art keywords
pref
esp
high energy
produce high
ferrite powder
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.)
Granted
Application number
FR7903560A
Other languages
English (en)
Other versions
FR2417168B1 (fr
Inventor
Jean-Marie Boeuf
Pierre Gerest
Henri Lemaire
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.)
Aimants Ugimac SA
Original Assignee
Aimants Ugimac 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 Aimants Ugimac SA filed Critical Aimants Ugimac SA
Priority to FR7903560A priority Critical patent/FR2417168A1/fr
Publication of FR2417168A1 publication Critical patent/FR2417168A1/fr
Application granted granted Critical
Publication of FR2417168B1 publication Critical patent/FR2417168B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2683—Other ferrites containing alkaline earth metals or lead
    • 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
    • H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

L'invention concerne un procédé de fabrication de poudres de ferrites de Ba, Sr et/ou Pb, destinées à être incorporées dans un liant élastomère, thermoplastique ou thermodurcissable. Le procédé consiste, à partir d'un mélange d'oxydes de fer alpha Fe 2 O3 et de carbonates de Ba, Sr et/ou Pb, à calciner ce mélange, à le laver, le rincer et le sécher et se caractérise en ce qu'on ajoute au mélange de départ un ou plusieurs halogénures alcalins et/ou alcalino-terreux en proportion totale de 0,5 à 15 % du poids total du mélange et un ou plusieurs composés oxygénés du bore, en particulier des borates alcalins et/ou alcalino-terreux en proportion de 0,2 à 7 % et que la calcination se fait entre 850 et 1 100 degrés C pendant au moins 15 minutes. Application à la fabrication d'aimants permanents flexibles ou rigides.
FR7903560A 1979-02-06 1979-02-06 Procede de preparation de poudres de ferrites et poudres ou aimants permanents ainsi obtenus Granted FR2417168A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7903560A FR2417168A1 (fr) 1979-02-06 1979-02-06 Procede de preparation de poudres de ferrites et poudres ou aimants permanents ainsi obtenus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7903560A FR2417168A1 (fr) 1979-02-06 1979-02-06 Procede de preparation de poudres de ferrites et poudres ou aimants permanents ainsi obtenus

Publications (2)

Publication Number Publication Date
FR2417168A1 true FR2417168A1 (fr) 1979-09-07
FR2417168B1 FR2417168B1 (fr) 1983-09-09

Family

ID=9221880

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7903560A Granted FR2417168A1 (fr) 1979-02-06 1979-02-06 Procede de preparation de poudres de ferrites et poudres ou aimants permanents ainsi obtenus

Country Status (1)

Country Link
FR (1) FR2417168A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1022969A (en) * 1963-10-14 1966-03-16 Rola Company Australia Proprie Method of producing a permanent magnet material
FR2022693A1 (fr) * 1968-11-06 1970-08-07 Plessey Co Ltd
FR2100169A5 (fr) * 1970-07-02 1972-03-17 Gen Motors Corp
FR2104252A5 (fr) * 1970-08-12 1972-04-14 Minnesota Mining & Mfg
US3853975A (en) * 1972-03-13 1974-12-10 Shell Oil Co Ceramic production

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1022969A (en) * 1963-10-14 1966-03-16 Rola Company Australia Proprie Method of producing a permanent magnet material
FR2022693A1 (fr) * 1968-11-06 1970-08-07 Plessey Co Ltd
FR2100169A5 (fr) * 1970-07-02 1972-03-17 Gen Motors Corp
FR2104252A5 (fr) * 1970-08-12 1972-04-14 Minnesota Mining & Mfg
US3853975A (en) * 1972-03-13 1974-12-10 Shell Oil Co Ceramic production

Also Published As

Publication number Publication date
FR2417168B1 (fr) 1983-09-09

Similar Documents

Publication Publication Date Title
GB2219309B (en) Permanent magnet and method for producing the same
DE3585119D1 (de) Verfahren zur herstellung von feinteiligem isotropen ferritpulver mit spinellstruktur.
JPS5250598A (en) Rare earth-cobalt magnet
JPS51126752A (en) Magnetron
FR2417168A1 (fr) Procede de preparation de poudres de ferrites et poudres ou aimants permanents ainsi obtenus
JPS52119747A (en) Magnetic coupling
IE891829L (en) Permanent Magnet having Improved Heat-Treatment¹Characteristics and Method for Producing the Same
ES480882A1 (es) Un metodo de fabricar imanes permanentes anisotropos unidos a plastico.
DE3476316D1 (en) Magnet system
JPS57199205A (en) Cylindrical permanent magnet and manufacture thereof
GB1317524A (en) Method of making ferrite products for permanent magnets
JPS55138204A (en) Ferrite magnet
JPS5236514A (en) Permanent magnetic alloy and its production
GB1286468A (en) Improvements in or relating to magnetic materials
GB1022969A (en) Method of producing a permanent magnet material
JPS51125622A (en) Process for producing permanent magnetic alloy
JPS5241547A (en) Airtight window
JPS5688188A (en) System for generating electron background lattice capable of alignment
JPS52103698A (en) Preparing rare earth cobalt magnet
ES477487A1 (es) Procedimiento para la fabricacion de un iman permanente.
Wells et al. Development in Mischmetal--Cobalt 5 and Low-Samarium Magnet Materials
JPS5222711A (en) Rotor for clock motor
JPS5328229A (en) Mold ignition coil
Callen Magnetic Anisotropy of R sub 2[Co sub 1--x Fe sub x] sub 17
Cavanagh Production of Strontium Ferrite Magnets

Legal Events

Date Code Title Description
ST Notification of lapse