JPS55138204A - Ferrite magnet - Google Patents

Ferrite magnet

Info

Publication number
JPS55138204A
JPS55138204A JP4357879A JP4357879A JPS55138204A JP S55138204 A JPS55138204 A JP S55138204A JP 4357879 A JP4357879 A JP 4357879A JP 4357879 A JP4357879 A JP 4357879A JP S55138204 A JPS55138204 A JP S55138204A
Authority
JP
Japan
Prior art keywords
indicates
magnet
al2o3
cao
lowered
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.)
Pending
Application number
JP4357879A
Other languages
Japanese (ja)
Inventor
Takeshi Anpo
Eiichi Wakamatsu
Takahiro Motone
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP4357879A priority Critical patent/JPS55138204A/en
Publication of JPS55138204A publication Critical patent/JPS55138204A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To obtain a magnet of large coercive force and maximum energy product by adding SiO2, Al2O3, CaO, in specified weight %, to an oxide compound magnet consisting of MO.nFe2O3 (M indicates one kind or more of Sr, Ba and Pb; and n indicates 5.0-6.0). CONSTITUTION:By adding SiO2, 0.10-20wt%, Al2O3, 0.05-20wt%, CaO, 0.5- 20wt%, to an oxide compound magnet consisting of MO.nFe2O3 (M indicates one kind or more of Sr, Ba and Pb; and n indicates 5.0-6.0), a ferrite magnet is formed. The reason why such specifications are made is that when SiO2 is less than the specified amount, the coercive force is lowered; and when it is above, the residual magnetic flux density is lowered. Also, when Al2O3 is less than the specified amount, the coercive force is lowered, and when it is above, the strength is weakened. Further, with regard to CaO, the magnetic flux density becomes maximum at the specified amount, and thereby a magnet of good characteristics for use in rotary machines can be obtained.
JP4357879A 1979-04-12 1979-04-12 Ferrite magnet Pending JPS55138204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4357879A JPS55138204A (en) 1979-04-12 1979-04-12 Ferrite magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4357879A JPS55138204A (en) 1979-04-12 1979-04-12 Ferrite magnet

Publications (1)

Publication Number Publication Date
JPS55138204A true JPS55138204A (en) 1980-10-28

Family

ID=12667633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4357879A Pending JPS55138204A (en) 1979-04-12 1979-04-12 Ferrite magnet

Country Status (1)

Country Link
JP (1) JPS55138204A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122605A (en) * 1984-07-10 1986-01-31 Daido Steel Co Ltd Oxide permanent magnet
JPH0298106A (en) * 1988-10-04 1990-04-10 Hitachi Metals Ltd Oxide permanent magnet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122605A (en) * 1984-07-10 1986-01-31 Daido Steel Co Ltd Oxide permanent magnet
JPH0298106A (en) * 1988-10-04 1990-04-10 Hitachi Metals Ltd Oxide permanent magnet

Similar Documents

Publication Publication Date Title
ES8600826A1 (en) Powdered iron core magnetic devices
GB2051026B (en) Magnetic iron oxide of high coercive force
JPS5591810A (en) Zero phase current transformer
JPS55138204A (en) Ferrite magnet
GB679349A (en) Improvements in and relating to magnetically soft mixed ferrite materials
JPS57202709A (en) Magnetic material and manufacture therefor
JPS57143808A (en) Wound core for stationary electrical equipment
GB1142104A (en) Improvements in or relating to ferromagnetic high-permeability manganese-zinc-ferrite cores
JPS52115000A (en) Material of permanent magnet
GB1446375A (en) Magnetite ferrites for magnetostrictive vibrators
JPS5659629A (en) Manufacture of high coercive force magnetic powder
GB646859A (en) Improvements in or relating to the manufacture of magnetic cores for electric induction apparatus
GB988836A (en) Improvements in or relating to permanent magnet materials
JPS5427998A (en) Magnet device
JPS5246433A (en) Transformer or choke coil
ES477487A1 (en) Process for preparing ferrite powders and powders or permanent magnets so produced.
JPS5632713A (en) Transformer
JPS55141711A (en) Manufacture of oxide magnet
JPS5221548A (en) Hysteresis clutch
JPS53123803A (en) Stator iron core of disc shape electric motor
JPS57197808A (en) Manufacture of oxide permanent magnet
JPS5346698A (en) Wound core material
JPS5220296A (en) Method of manufacture of iron core
JPS5214802A (en) Electromagnetic device
JPS5684321A (en) Oxide magnetic material