GB1029054A - A method of manufacture of a body of ferrite material - Google Patents

A method of manufacture of a body of ferrite material

Info

Publication number
GB1029054A
GB1029054A GB1655463A GB1655463A GB1029054A GB 1029054 A GB1029054 A GB 1029054A GB 1655463 A GB1655463 A GB 1655463A GB 1655463 A GB1655463 A GB 1655463A GB 1029054 A GB1029054 A GB 1029054A
Authority
GB
United Kingdom
Prior art keywords
ferrites
erosion
resistivity
anvil
ohm
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
GB1655463A
Inventor
Thomas Meirion Jackson
Raymond Malcolm Glaister
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1655463A priority Critical patent/GB1029054A/en
Publication of GB1029054A publication Critical patent/GB1029054A/en
Expired 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

Landscapes

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

Abstract

1,029,054. Magnetic structures. STANDARD TELEPHONES & CABLES Ltd. April 24, 1964 [April 26, 1963], No. 16554/63. Heading H1H. Grooves, holes and the like are formed in ferrite material by spark erosion. The material is placed in a container 1 on an anvil 2 and covered with benzene to a level 5 above the edge of an erosion electrode 4 which is connected to the positive pole of a D.C. supply whose negative pole is connected to the anvil. For effective erosion the resistivity of the ferrite should be below 45 ohm/cm., preferably between 0À02 and 10 ohm/cm. Naturally suitable materials are Co Fe ferrites and some MnZn ferrites. For high resistivity ferrites (e.g. MnZn, MnMg, NiZn ferrites) the material is reduced by heating in reducing atmosphere between 500‹ C. and 1000‹ C. to convert ferric to ferrous iron and lower the resistivity. Erosion is then performed and the material re-oxidized.
GB1655463A 1964-04-24 1964-04-24 A method of manufacture of a body of ferrite material Expired GB1029054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1655463A GB1029054A (en) 1964-04-24 1964-04-24 A method of manufacture of a body of ferrite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1655463A GB1029054A (en) 1964-04-24 1964-04-24 A method of manufacture of a body of ferrite material

Publications (1)

Publication Number Publication Date
GB1029054A true GB1029054A (en) 1966-05-11

Family

ID=10079409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1655463A Expired GB1029054A (en) 1964-04-24 1964-04-24 A method of manufacture of a body of ferrite material

Country Status (1)

Country Link
GB (1) GB1029054A (en)

Similar Documents

Publication Publication Date Title
JPS5415126A (en) Dc to dc converter
GB1029054A (en) A method of manufacture of a body of ferrite material
GB900687A (en) Method of manufacturing of ferromagnetic ferrite bodies
GB924286A (en) Method of making permanent magnets
GB759248A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB1513038A (en) Electrical transformers of the kind employing a magnetic core
JPS51122360A (en) Improvement of darlington circuit
ES219748A1 (en) Method of manufacturing a magnet core having an approximately-rectangular hysteresis loop
JPS5717111A (en) Oxide magnetic material
GB1141086A (en) Improvements in or relating to high frequency transformers
JPS57127917A (en) Magnetic head device
GB677418A (en) Ceramic ferromagnetic body with high maximum permeability
JPS5764188A (en) Ferrite detector
GB1331748A (en) Electrical reactors
JPS5271730A (en) Electromagnetic valve
JPS5275308A (en) Magnetic head core
JPS52140898A (en) Multi-electrode magnetizing means
GB992794A (en) Improvements in and relating to inductively-heated platens
Mulder Improvements of the Isolating Transformer.
JPS5717112A (en) Magnetic oxide material
JPS5281812A (en) Normally conductive magnetic floating control device
CA583979A (en) Magnetically strong ferromagnetic magnesium-zinc type of ferrite
JPS55105403A (en) Strip line circulator
JPS5259894A (en) Magnetic material
GB860683A (en) Improvements in or relating to screw-threaded ferromagnetic cores