FR3033271B1 - Particules de materiau ferromagnetique enrobees d'une couche de ferrite de type nizn - Google Patents

Particules de materiau ferromagnetique enrobees d'une couche de ferrite de type nizn Download PDF

Info

Publication number
FR3033271B1
FR3033271B1 FR1551816A FR1551816A FR3033271B1 FR 3033271 B1 FR3033271 B1 FR 3033271B1 FR 1551816 A FR1551816 A FR 1551816A FR 1551816 A FR1551816 A FR 1551816A FR 3033271 B1 FR3033271 B1 FR 3033271B1
Authority
FR
France
Prior art keywords
ferromagnetic material
particles
nizn
material particles
ferrite layer
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 - Fee Related
Application number
FR1551816A
Other languages
English (en)
Other versions
FR3033271A1 (fr
Inventor
Rudy Guicheteau
Vincent Bonnefoy
Jean Francois Silvain
Jean-Louis BOBET
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.)
Centre National de la Recherche Scientifique CNRS
Sintertech SAS
Original Assignee
Centre National de la Recherche Scientifique CNRS
Sintertech SAS
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 Centre National de la Recherche Scientifique CNRS, Sintertech SAS filed Critical Centre National de la Recherche Scientifique CNRS
Priority to FR1551816A priority Critical patent/FR3033271B1/fr
Priority to EP16713538.3A priority patent/EP3265257A1/fr
Priority to PCT/FR2016/050497 priority patent/WO2016139431A1/fr
Publication of FR3033271A1 publication Critical patent/FR3033271A1/fr
Application granted granted Critical
Publication of FR3033271B1 publication Critical patent/FR3033271B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/16—Metallic particles coated with a non-metal
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/33—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 soft-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

La présente invention concerne un procédé d'enrobage de particules de matériau ferromagnétique par une couche de ferrite de type NiZn. Ce procédé comprend : - la fourniture de particules de matériau ferromagnétique ; - l'activation de la surface des particules de matériau ferromagnétique ; - l'enrobage des particules de matériau ferromagnétique avec des précurseurs de ferrite ; et - la récupération des particules de matériau ferromagnétique ainsi enrobées. Le procédé peut comprend en outre la formation d'une couche intermédiaire de silice à la surface des particules avant l'enrobage. La présente invention concerne également des particules pouvant être obtenues par ce procédé, un procédé de fabrication d'un article fritté à partir de ces particules et l'article fritté en question.
FR1551816A 2015-03-04 2015-03-04 Particules de materiau ferromagnetique enrobees d'une couche de ferrite de type nizn Expired - Fee Related FR3033271B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1551816A FR3033271B1 (fr) 2015-03-04 2015-03-04 Particules de materiau ferromagnetique enrobees d'une couche de ferrite de type nizn
EP16713538.3A EP3265257A1 (fr) 2015-03-04 2016-03-03 PARTICULES DE MATÉRIAU FERROMAGNÉTIQUE ENROBÉES D'UNE COUCHE DE FERRITE DE TYPE NiZn
PCT/FR2016/050497 WO2016139431A1 (fr) 2015-03-04 2016-03-03 PARTICULES DE MATÉRIAU FERROMAGNÉTIQUE ENROBÉES D'UNE COUCHE DE FERRITE DE TYPE NiZn

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1551816A FR3033271B1 (fr) 2015-03-04 2015-03-04 Particules de materiau ferromagnetique enrobees d'une couche de ferrite de type nizn
FR1551816 2015-03-04

Publications (2)

Publication Number Publication Date
FR3033271A1 FR3033271A1 (fr) 2016-09-09
FR3033271B1 true FR3033271B1 (fr) 2019-11-29

Family

ID=54199735

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1551816A Expired - Fee Related FR3033271B1 (fr) 2015-03-04 2015-03-04 Particules de materiau ferromagnetique enrobees d'une couche de ferrite de type nizn

Country Status (3)

Country Link
EP (1) EP3265257A1 (fr)
FR (1) FR3033271B1 (fr)
WO (1) WO2016139431A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1424704A4 (fr) * 2001-08-09 2005-03-23 Circle Promotion Science & Eng Substance magnetique composite formee par compression de particules metalliques revetues de ferrite et procede de preparation associe
JP5697589B2 (ja) 2008-03-20 2015-04-08 ホガナス アクチボラグ （パブル） 強磁性粉末組成物及びその生産方法

Also Published As

Publication number Publication date
EP3265257A1 (fr) 2018-01-10
WO2016139431A1 (fr) 2016-09-09
FR3033271A1 (fr) 2016-09-09

Similar Documents

Publication Publication Date Title
USD924323S1 (en) Teaching aid
MX2017002432A (es) Semirremolque refrigerado compuesto y metodo de elaboracion del mismo.
MX2019011326A (es) Ensamblaje de susceptores multicapa para calentar por induccion un sustrato formador de aerosol.
MX2013007971A (es) Elemento deslizante, en particular un aro de piston, que tiene un recubrimiento, y procedimiento para la produccion de un elemento deslizante.
EP2617869A3 (fr) Procédé de fabrication d'un revêtement de barrière thermique et article présentant un revêtement de barrière thermique pulvérisé à froid
EP4015485A3 (fr) Ligne de fabrication, procédé et article fritté
MX2018003227A (es) Producto manufacturado para recubrir superficies y procedimientos relacionados de realizacion y colocacion.
PH12018501869A1 (en) Process for manufacturing a milk of slaked lime of great fineness and milk of lime of great fineness thereby obtained with process water
ZA202002399B (en) Steel section having a thickness of at least 100mm and method of manufacturing the same
MA39341A1 (fr) Substrat multicouche et procédé de fabrication
MX2020004313A (es) Un metodo para la fabricacion de una lamina de acero galvanizado.
MX2017000962A (es) Articulos con diseño y metodos para revestir sustratos con una capa con diseño.
SG10201809273VA (en) Light wave separation lattices and methods of forming light wave separation lattices
MA51268B1 (fr) Substrat en d'acier revêtu par immersion à chaud
FR3004972B1 (fr) Procede de fabrication d'une piece dotee d'un revetement de surface lubrifiant, piece dotee d'un tel revetement et turbomachine
FR3033271B1 (fr) Particules de materiau ferromagnetique enrobees d'une couche de ferrite de type nizn
FR3039839B1 (fr) Procede de fabrication d'une piece en materiau composite
FR2970663B1 (fr) Finition par sablage des pieces frittees par fusion laser
MA47090B1 (fr) Procédé de fabrication d'une tôle d'acier traitée thermiquement
MX2016005433A (es) Proceso de fabricacion de guarnecidos de techo para vehiculos.
FR3051829B1 (fr) Procede de fabrication d'un carter annulaire equipe de turbomachine
MX2021000962A (es) Articulo abrasivo y metodo de formacion.
EP3882370A4 (fr) Substrat à couche hydrofuge-oléofuge, matériau de dépôt en phase vapeur, et procédé de production d'un substrat à couche hydrofuge-oléofuge
EP2902854A3 (fr) Partie externe de montre, procédé de fabrication d'une telle partie et montre
WO2016143923A3 (fr) Charbon solide et procédé de fabrication correspondant

Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 2

PLSC Publication of the preliminary search report

Effective date: 20160909

PLFP Fee payment

Year of fee payment: 3

PLFP Fee payment

Year of fee payment: 4

PLFP Fee payment

Year of fee payment: 5

ST Notification of lapse

Effective date: 20201110