GB683722A - Ferromagnetic materials - Google Patents

Ferromagnetic materials

Info

Publication number
GB683722A
GB683722A GB1663550A GB1663550A GB683722A GB 683722 A GB683722 A GB 683722A GB 1663550 A GB1663550 A GB 1663550A GB 1663550 A GB1663550 A GB 1663550A GB 683722 A GB683722 A GB 683722A
Authority
GB
United Kingdom
Prior art keywords
per cent
kaolin
manganese
zinc
mixture
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
GB1663550A
Inventor
Douglas Hiley Owen
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 GB1663550A priority Critical patent/GB683722A/en
Publication of GB683722A publication Critical patent/GB683722A/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
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites

Abstract

683,722. Magnetic compositions. STANDARD TELEPHONES & CABLES, Ltd. June 29, 1951 [July 4, 1950], No. 16635/50. Class 38 (ii). A ferromagnetic ferrite composition is made by producing a mixture of manganeze, zinc and ferric iron oxides by decomposing the oxalates of the metals in the presence of a small amount of flexing material which may be kaolin, silica or kieselguhr, and then heating the mixture. The resultant mixture is then compressed at about 25 tons/sq. in. and heated in nitrogen at 1000-1300‹ C. for three to six hours. A manganese zinc ferrite composition may be made containing 48.4 per cent iron, 13.86 per cent zinc, and 10.46 per cent manganese. Figures are given of permeabilities and losses for various compositions containing 1-1.5 per cent kaolin, and for a composition containing 0.5 per cent kaolin and subject to six hours heating at different temperatures. The Provisional Specification refers to compositions comprising also the oxides of cadmium, magnesium, nickel, cobalt, copper, ferrous iron, and of chromium or manganic manganese, and to manganese zinc ferrites with 0.5 per cent kieselguhr, and 0.25 and 0.75 per cent of kaolin.
GB1663550A 1950-07-04 1950-07-04 Ferromagnetic materials Expired GB683722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1663550A GB683722A (en) 1950-07-04 1950-07-04 Ferromagnetic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1663550A GB683722A (en) 1950-07-04 1950-07-04 Ferromagnetic materials

Publications (1)

Publication Number Publication Date
GB683722A true GB683722A (en) 1952-12-03

Family

ID=10080867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1663550A Expired GB683722A (en) 1950-07-04 1950-07-04 Ferromagnetic materials

Country Status (1)

Country Link
GB (1) GB683722A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068610B (en) * 1956-03-06 1959-11-05 LIC1ENTIA Patent-VerwaHtungs-G.mib.H., Hamburg Process for the production of permanent magnets on an oxide basis
US2930097A (en) * 1955-08-19 1960-03-29 Hughes Aircraft Co Method of manufacturing impregnated ferrite
DE1085803B (en) * 1953-10-02 1960-07-21 Standard Elektrik Lorenz Ag Process for the production of ferrites, in particular for the production of permanent magnets
US2950251A (en) * 1955-09-19 1960-08-23 Rca Corp Magnetic materials having rectangular hysteresis characteristics
US2980617A (en) * 1956-03-13 1961-04-18 Indiana General Corp Ferrite compositions and method of making same
US2992990A (en) * 1956-01-05 1961-07-18 Richard G Parker Soft magnetic material
US3000828A (en) * 1954-03-12 1961-09-19 Int Standard Electric Corp Manufacture of metal oxides and of ferrites
US3007874A (en) * 1957-05-09 1961-11-07 Steatite Res Corp Process of manufacturing ternary ferrites containing manganese and zinc
US3019189A (en) * 1958-04-07 1962-01-30 Steatite Res Corp Mixed ferrites by a coprecipitation process
US3047429A (en) * 1959-03-27 1962-07-31 Rca Corp Magnetic recording medium comprising coatings of ferrite particles of the molar composite amno.bzno.cfe2o3
DE1176544B (en) * 1957-09-18 1964-08-20 Hermsdorf Keramik Veb Process for the production of magnetically hard oxide materials
US3169115A (en) * 1960-08-25 1965-02-09 Nippon Electric Co Manganese zinc ferrite containing vanadium pentoxide, silicon dioxide, and indium trioxide

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1085803B (en) * 1953-10-02 1960-07-21 Standard Elektrik Lorenz Ag Process for the production of ferrites, in particular for the production of permanent magnets
US3000828A (en) * 1954-03-12 1961-09-19 Int Standard Electric Corp Manufacture of metal oxides and of ferrites
US2930097A (en) * 1955-08-19 1960-03-29 Hughes Aircraft Co Method of manufacturing impregnated ferrite
US2950251A (en) * 1955-09-19 1960-08-23 Rca Corp Magnetic materials having rectangular hysteresis characteristics
US2992990A (en) * 1956-01-05 1961-07-18 Richard G Parker Soft magnetic material
DE1068610B (en) * 1956-03-06 1959-11-05 LIC1ENTIA Patent-VerwaHtungs-G.mib.H., Hamburg Process for the production of permanent magnets on an oxide basis
US2980617A (en) * 1956-03-13 1961-04-18 Indiana General Corp Ferrite compositions and method of making same
US3007874A (en) * 1957-05-09 1961-11-07 Steatite Res Corp Process of manufacturing ternary ferrites containing manganese and zinc
DE1176544B (en) * 1957-09-18 1964-08-20 Hermsdorf Keramik Veb Process for the production of magnetically hard oxide materials
US3019189A (en) * 1958-04-07 1962-01-30 Steatite Res Corp Mixed ferrites by a coprecipitation process
US3047429A (en) * 1959-03-27 1962-07-31 Rca Corp Magnetic recording medium comprising coatings of ferrite particles of the molar composite amno.bzno.cfe2o3
US3169115A (en) * 1960-08-25 1965-02-09 Nippon Electric Co Manganese zinc ferrite containing vanadium pentoxide, silicon dioxide, and indium trioxide

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