GB1262594A – Method of reducing the coercive force of permanent-magnetic material
– Google Patents
GB1262594A – Method of reducing the coercive force of permanent-magnetic material
– Google Patents
Method of reducing the coercive force of permanent-magnetic material
Info
Publication number
GB1262594A
GB1262594A
GB01666/70A
GB1166670A
GB1262594A
GB 1262594 A
GB1262594 A
GB 1262594A
GB 01666/70 A
GB01666/70 A
GB 01666/70A
GB 1166670 A
GB1166670 A
GB 1166670A
GB 1262594 A
GB1262594 A
GB 1262594A
Authority
GB
United Kingdom
Prior art keywords
permanent
reducing
magnetic material
march
coercive force
Prior art date
1969-03-14
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
GB01666/70A
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.)
1969-03-14
Filing date
1970-03-11
Publication date
1972-02-02
1970-03-11
Application filed by Philips Electronic and Associated Industries Ltd
filed
Critical
Philips Electronic and Associated Industries Ltd
1972-02-02
Publication of GB1262594A
publication
Critical
patent/GB1262594A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B22—CASTING; POWDER METALLURGY
B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
B22F9/00—Making metallic powder or suspensions thereof
B22F9/02—Making metallic powder or suspensions thereof using physical processes
B22F9/023—Hydrogen absorption
B—PERFORMING OPERATIONS; TRANSPORTING
B22—CASTING; POWDER METALLURGY
B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F1/14—Treatment of metallic powder
C—CHEMISTRY; METALLURGY
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C1/00—Making non-ferrous alloys
C22C1/04—Making non-ferrous alloys by powder metallurgy
C22C1/0433—Nickel- or cobalt-based alloys
C22C1/0441—Alloys based on intermetallic compounds of the type rare earth – Co, Ni
C—CHEMISTRY; METALLURGY
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C19/00—Alloys based on nickel or cobalt
C22C19/07—Alloys based on nickel or cobalt based on 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
H01F1/04—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 metals or alloys
H01F1/047—Alloys characterised by their composition
H01F1/053—Alloys characterised by their composition containing rare earth metals
H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
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
H01F1/04—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 metals or alloys
H01F1/06—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 metals or alloys in the form of particles, e.g. powder
Abstract
1,262,594. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 11 March, 1970 [14 March, 1969], No. 11666/70. Heading H1H. [Also in Division C1] Magnetic bodies are obtained by compacting, before, after or during magnetization, a powdered rare-earth-cobalt compound of the formula M 5 R where M=Co or a combination of Co with one or more of Fe, Ni and Cu and R is one, or more lanthanide, yttrium or thorium. The material is reduced in coercivity by application of a pressure of hydrogen gas until it contains at least 0À2 moles per mole of M 5 R before magnetization. ,In an example SmCo 5 is pulverized, orientated in a magnetic field, compressed without a binder to form a block and the block was subjected to a hydrogen pressure of 30 atmospheres, and magnetized.
GB01666/70A
1969-03-14
1970-03-11
Method of reducing the coercive force of permanent-magnetic material
Expired
GB1262594A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL6903931A
NL6903931A
(en)
1969-03-14
1969-03-14
Publications (1)
Publication Number
Publication Date
GB1262594A
true
GB1262594A
(en)
1972-02-02
Family
ID=19806410
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB01666/70A
Expired
GB1262594A
(en)
1969-03-14
1970-03-11
Method of reducing the coercive force of permanent-magnetic material
Country Status (11)
Country
Link
US
(1)
US3647574A
(en)
AT
(1)
AT302501B
(en)
AU
(1)
AU1251670A
(en)
BE
(1)
BE747286A
(en)
BR
(1)
BR7017383D0
(en)
CA
(1)
CA918044A
(en)
CH
(1)
CH524876A
(en)
ES
(1)
ES377414A1
(en)
FR
(1)
FR2038898A5
(en)
GB
(1)
GB1262594A
(en)
NL
(1)
NL6903931A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB1554384A
(en)
*
1977-04-15
1979-10-17
Magnetic Polymers Ltd
Rare earth metal alloy magnets
1969
1969-03-14
NL
NL6903931A
patent/NL6903931A/xx
unknown
1969-08-28
US
US853964A
patent/US3647574A/en
not_active
Expired – Lifetime
1970
1970-03-11
GB
GB01666/70A
patent/GB1262594A/en
not_active
Expired
1970-03-11
AT
AT227770A
patent/AT302501B/en
not_active
IP Right Cessation
1970-03-11
CH
CH360670A
patent/CH524876A/en
not_active
IP Right Cessation
1970-03-11
BR
BR217383/70A
patent/BR7017383D0/en
unknown
1970-03-12
BE
BE747286D
patent/BE747286A/en
unknown
1970-03-12
AU
AU12516/70A
patent/AU1251670A/en
not_active
Expired
1970-03-12
ES
ES377414A
patent/ES377414A1/en
not_active
Expired
1970-03-13
CA
CA077361A
patent/CA918044A/en
not_active
Expired
1970-03-13
FR
FR7009071A
patent/FR2038898A5/fr
not_active
Expired
Also Published As
Publication number
Publication date
CA918044A
(en)
1973-01-02
ES377414A1
(en)
1972-07-01
US3647574A
(en)
1972-03-07
BR7017383D0
(en)
1973-01-16
AU1251670A
(en)
1971-09-16
BE747286A
(en)
1970-09-14
FR2038898A5
(en)
1971-01-08
AT302501B
(en)
1972-10-25
DE2008191B2
(en)
1977-06-30
DE2008191A1
(en)
1970-10-01
NL6903931A
(en)
1970-09-16
CH524876A
(en)
1972-06-30
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