GB1060609A – Improvements relating to methods of manufacturing annular magnetic cores
– Google Patents
GB1060609A – Improvements relating to methods of manufacturing annular magnetic cores
– Google Patents
Improvements relating to methods of manufacturing annular magnetic cores
Info
Publication number
GB1060609A
GB1060609A
GB48740/63A
GB4874063A
GB1060609A
GB 1060609 A
GB1060609 A
GB 1060609A
GB 48740/63 A
GB48740/63 A
GB 48740/63A
GB 4874063 A
GB4874063 A
GB 4874063A
GB 1060609 A
GB1060609 A
GB 1060609A
Authority
GB
United Kingdom
Prior art keywords
air
per cent
mol per
core
temperature
Prior art date
1962-12-13
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
GB48740/63A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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.)
1962-12-13
Filing date
1963-12-10
Publication date
1967-03-08
1963-12-10
Application filed by Philips Electronic and Associated Industries Ltd
filed
Critical
Philips Electronic and Associated Industries Ltd
1967-03-08
Publication of GB1060609A
publication
Critical
patent/GB1060609A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
H01F1/113—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent
Abstract
1,060,609. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 10, 1963 [Dec. 13, 1962], No. 48740/63. Heading H1H. An annular magnetic core having an outer diameter of at most 0À6 mm., an inner diameter of at least half the outer diameter, a switching time of at most 0.25 Á/sec. and a value of the quotient uV1¸αVz greater than 3, with a disturbance ratio of 0.61, is obtained by sintering the presintered product of a mixture of oxides or equivalent compounds Cu,Fe and Mn in the proportions 4-6 mol per cent CuO, 38-14 mol per cent Fe 2 O 3 , 50-58 mol per cent MnO. In preparation the presintered product is mixed with polyvinyl alcohol to form a paste, the paste is inspissated to a mass having a weight 1-1 to 1-2 times the weight of the presintered product, the larger particles are sieved out, and the remaining particles are compressed into a core having a density of 2.3 to 3À0 gm./c.c. The core is then heated within 1 minute in air or an air-oxygen mixture to a temperature between 1040 C. and 1120 C. on a high melting-point metal (platinum) or metal alloy (platinum rhodium) plate, held at this temperature for 1:5 to 10 minutes, cooled during 30 minutes by at least 70 C. and quenched in air at room temperature.
GB48740/63A
1962-12-13
1963-12-10
Improvements relating to methods of manufacturing annular magnetic cores
Expired
GB1060609A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL286714
1962-12-13
Publications (1)
Publication Number
Publication Date
GB1060609A
true
GB1060609A
(en)
1967-03-08
Family
ID=19754282
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB48740/63A
Expired
GB1060609A
(en)
1962-12-13
1963-12-10
Improvements relating to methods of manufacturing annular magnetic cores
Country Status (10)
Country
Link
US
(1)
US3297576A
(en)
AT
(1)
AT241865B
(en)
BE
(1)
BE641145A
(en)
CH
(1)
CH453514A
(en)
DE
(1)
DE1471341B2
(en)
DK
(1)
DK116383B
(en)
ES
(1)
ES294384A1
(en)
FR
(1)
FR1382406A
(en)
GB
(1)
GB1060609A
(en)
NL
(1)
NL286714A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
NL6403377A
(en)
*
1964-03-28
1965-09-29
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2818387A
(en)
*
1954-10-28
1957-12-31
Philips Corp
Square loop ferromagnetic material
NL210710A
(en)
*
1956-09-17
NL256173A
(en)
*
1959-11-16
1962
1962-12-13
NL
NL286714D
patent/NL286714A/xx
unknown
1963
1963-12-06
US
US328503A
patent/US3297576A/en
not_active
Expired – Lifetime
1963-12-07
DE
DE19631471341
patent/DE1471341B2/en
active
Pending
1963-12-10
CH
CH1509163A
patent/CH453514A/en
unknown
1963-12-10
DK
DK575463AA
patent/DK116383B/en
unknown
1963-12-10
AT
AT988463A
patent/AT241865B/en
active
1963-12-10
GB
GB48740/63A
patent/GB1060609A/en
not_active
Expired
1963-12-11
BE
BE641145D
patent/BE641145A/xx
unknown
1963-12-11
ES
ES0294384A
patent/ES294384A1/en
not_active
Expired
1963-12-12
FR
FR956999A
patent/FR1382406A/en
not_active
Expired
Also Published As
Publication number
Publication date
NL286714A
(en)
1965-12-10
ES294384A1
(en)
1964-01-16
CH453514A
(en)
1968-06-14
US3297576A
(en)
1967-01-10
DK116383B
(en)
1970-01-05
BE641145A
(en)
1964-06-11
DE1471341A1
(en)
1969-04-10
DE1471341B2
(en)
1971-09-16
FR1382406A
(en)
1964-12-18
AT241865B
(en)
1965-08-10
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None