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GB984837A - Improvements in or relating to manganese ferrites - Google Patents

Improvements in or relating to manganese ferrites

Info

Publication number
GB984837A
GB984837A GB4337062A GB4337062A GB984837A GB 984837 A GB984837 A GB 984837A GB 4337062 A GB4337062 A GB 4337062A GB 4337062 A GB4337062 A GB 4337062A GB 984837 A GB984837 A GB 984837A
Authority
GB
United Kingdom
Prior art keywords
hours
mixed
formula
ferrite
relating
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
GB4337062A
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 Business Machines Corp
Original Assignee
International Business Machines Corp
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 Business Machines Corp filed Critical International Business Machines Corp
Publication of GB984837A publication Critical patent/GB984837A/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)
  • Compounds Of Iron (AREA)

Abstract

984,837. Magnetic compositions. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 16, 1962 [Dec. 6, 1961], No. 43370/62. Heading H1H. A ferrospinel material having low coercivity and a Curie temperature above 200 comprises a manganese tungsten ferrite with the possible inclusion of Ni, Cu, Mg or Cr. The unmodified ferrite has the formula Mn x Wy Fe z O 4 , where 1À1 <x< 1À5, 0À02 <Y< 0À23, 1À38 <z< 1À72 and x+y+z=3. The modified material has the formula Mnx Wy Fe z N (3-x-y-z) O 4 , where y and z have the same limits as above and 0.38 <X< 1.5. In preparation the constituents may be mixed, calcined for 1-2 hours at 700-1000‹ C., ground, mixed with a binder and lubricant, compressed to a " green " density of 2À5-3À5 gm./c.c., sintered between 1300‹ C. and 1450‹ C. for a period from 10 minutes to 24 hours, and plate quenched to room temperature.
GB4337062A 1961-12-06 1962-11-16 Improvements in or relating to manganese ferrites Expired GB984837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15740861A 1961-12-06 1961-12-06

Publications (1)

Publication Number Publication Date
GB984837A true GB984837A (en) 1965-03-03

Family

ID=22563592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4337062A Expired GB984837A (en) 1961-12-06 1962-11-16 Improvements in or relating to manganese ferrites

Country Status (2)

Country Link
FR (1) FR1341820A (en)
GB (1) GB984837A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006009770A1 (en) * 2004-06-23 2006-01-26 General Electric Company Method and system for decreasing molybdenum and/or tungsten concentration in aqueous solutions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006009770A1 (en) * 2004-06-23 2006-01-26 General Electric Company Method and system for decreasing molybdenum and/or tungsten concentration in aqueous solutions

Also Published As

Publication number Publication date
FR1341820A (en) 1963-11-02

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