GB823557A - Improvements in or relating to magnetic core material - Google Patents

Improvements in or relating to magnetic core material

Info

Publication number
GB823557A
GB823557A GB1810256A GB1810256A GB823557A GB 823557 A GB823557 A GB 823557A GB 1810256 A GB1810256 A GB 1810256A GB 1810256 A GB1810256 A GB 1810256A GB 823557 A GB823557 A GB 823557A
Authority
GB
United Kingdom
Prior art keywords
proportions
june
hour
nitrogen
air
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
GB1810256A
Inventor
George Victor Planer
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.)
International Computers and Tabulators Ltd
Original Assignee
International Computers and Tabulators 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 International Computers and Tabulators Ltd filed Critical International Computers and Tabulators Ltd
Priority to GB1810256A priority Critical patent/GB823557A/en
Publication of GB823557A publication Critical patent/GB823557A/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
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2625—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing magnesium

Landscapes

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

Abstract

823,557. Magnetic compositions. INTERNATIONAL COMPUTERS & TABULATORS Ltd. June 11, 1957 [June 12, 1956], No. 18102/56. Class 38 (2). A ferromagnetic ferrite exhibiting a rectangular hysteresis loop is made by sintering together MgO, MnO 2 , Fe 2 O 3 in the relative proportions by weight which fall within the area WXYZ of the triaxial diagram shown in Fig. 3, or other compounds in such proportions as to give a similar result. The starting materials were milled in water, dried prefired at 1000‹ C. for 1 hour in nitrogen or air, reground, mixed with an organic binder, moulded and fired at 139‹ to 1500‹ C. for a half to one hour in nitrogen or air. Magnetic properties are tabulated for a number of ferrites made from materials in different starting proportions indicated by the points A, B, C, D, E.
GB1810256A 1956-06-12 1956-06-12 Improvements in or relating to magnetic core material Expired GB823557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1810256A GB823557A (en) 1956-06-12 1956-06-12 Improvements in or relating to magnetic core material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1810256A GB823557A (en) 1956-06-12 1956-06-12 Improvements in or relating to magnetic core material

Publications (1)

Publication Number Publication Date
GB823557A true GB823557A (en) 1959-11-11

Family

ID=10106683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1810256A Expired GB823557A (en) 1956-06-12 1956-06-12 Improvements in or relating to magnetic core material

Country Status (1)

Country Link
GB (1) GB823557A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598034A (en) * 1982-09-13 1986-07-01 Nippon Iron Powder Co., Ltd. Ferrite carriers for electrophotographic development

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598034A (en) * 1982-09-13 1986-07-01 Nippon Iron Powder Co., Ltd. Ferrite carriers for electrophotographic development

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