GB1216486A - Magnetic material - Google Patents
Magnetic materialInfo
- Publication number
- GB1216486A GB1216486A GB57547/67A GB5754767A GB1216486A GB 1216486 A GB1216486 A GB 1216486A GB 57547/67 A GB57547/67 A GB 57547/67A GB 5754767 A GB5754767 A GB 5754767A GB 1216486 A GB1216486 A GB 1216486A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- magnetic particles
- dec
- contain
- polyvinyl alcohol
- 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
Links
- 239000000696 magnetic material Substances 0.000 title 1
- 239000006249 magnetic particle Substances 0.000 abstract 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 abstract 2
- 229910019440 Mg(OH) Inorganic materials 0.000 abstract 2
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 2
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 abstract 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 abstract 1
- 238000000137 annealing Methods 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 239000008199 coating composition Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 239000011363 dried mixture Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052914 metal silicate Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000003870 refractory metal Substances 0.000 abstract 1
- 150000004760 silicates Chemical class 0.000 abstract 1
- 238000001694 spray drying Methods 0.000 abstract 1
- 239000000454 talc Substances 0.000 abstract 1
- 229910052623 talc Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/22—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/24—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Soft Magnetic Materials (AREA)
- Paints Or Removers (AREA)
Abstract
1,216,486. Magnetic compositions. WESTERN ELECTRIC CO. Inc. 19 Dec., 1967 [21 Dec; 1966], No. 57547/67. Heading H1H. A magnetic composition for forming magnetic cores comprises magnetic particles coated with a heat dried mixture of an alkali metal silicate, Mg(OH) 2 , two refractory metal silicates, e.g. Al and Mg silicates, and polyvinyl alcohol or carboxymethyl cellulose. The coating is formed by slurrying the constituents in water and heating e.g. to 260‹ F. in a rotary drum or by spray drying. The magnetic particles may be 80-83% Ni, 17-15% Te, and 2À15-1À75% Mo, by wt., and may be -120 mesh. The coating composition may contain, for 1000 g. of magnetic particles; 4À93-11À41 g. Na silicate (Na 2 O/SiO 2 ratio 2À84) 6À72-15À45 g. Mg(OH) 2 5À24-12À05 g. colloidal clay 0À62-1À41 g. talc 14À89-24À81 c.c of a 10% polyvinyl alcohol solution or 0À5% carboxymethyl cellulose solution 66-110À2 c.c. H 2 O. The coated particles may contain 0À975- 2À25% by wt. of the coater, and may be sieved through an 80 mesh sieve. Cores are formed by pressing at 200,000 lb/inch<SP>2</SP> pressure, annealing in H 2 at 1000-1200‹ F., and then firing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60342166A | 1966-12-21 | 1966-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1216486A true GB1216486A (en) | 1970-12-23 |
Family
ID=24415365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB57547/67A Expired GB1216486A (en) | 1966-12-21 | 1967-12-19 | Magnetic material |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3498918A (en) |
| DE (1) | DE1639209A1 (en) |
| FR (1) | FR1547803A (en) |
| GB (1) | GB1216486A (en) |
| NL (1) | NL6714288A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2814043A4 (en) * | 2012-02-06 | 2015-07-01 | Ntn Toyo Bearing Co Ltd | Powder for magnetic core and powder magnetic core |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777295A (en) * | 1968-03-21 | 1973-12-04 | Magnetics Inc | Magnetic particle core |
| GB1272325A (en) * | 1968-08-29 | 1972-04-26 | Fuji Photo Film Co Ltd | Process for the production of magnetic substances |
| US3953251A (en) * | 1974-03-25 | 1976-04-27 | Bell Telephone Laboratories, Incorporated | Method for the production of carbonyl iron containing magnetic devices with selected temperature variation |
| US4177089A (en) * | 1976-04-27 | 1979-12-04 | The Arnold Engineering Company | Magnetic particles and compacts thereof |
| US4265681A (en) * | 1978-04-14 | 1981-05-05 | Westinghouse Electric Corp. | Method of producing low loss pressed magnetic cores from microlaminations |
| US4158580A (en) * | 1978-04-14 | 1979-06-19 | Westinghouse Electric Corp. | Method of making pressed magnetic core components |
| FR2518528A1 (en) * | 1981-12-23 | 1983-06-24 | Europ Composants Electron | Formation of magnetic castings - by cold forming followed by thermal treatment at 500 degrees Celsius in air |
| US5756162A (en) * | 1995-08-31 | 1998-05-26 | Samsung Electro-Mechanics Co., Ltd. | Method for manufacturing sendust core powder |
| TW201029027A (en) * | 2009-01-16 | 2010-08-01 | Cyntec Co Ltd | Method for adjusting inductance of choke and method for designing choke |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2105070A (en) * | 1934-02-16 | 1938-01-11 | Western Electric Co | Magnetic core |
| US2977263A (en) * | 1959-12-03 | 1961-03-28 | Western Electric Co | Magnetic cores and methods of making the same |
-
1966
- 1966-12-21 US US603421A patent/US3498918A/en not_active Expired - Lifetime
-
1967
- 1967-10-20 NL NL6714288A patent/NL6714288A/xx unknown
- 1967-11-10 FR FR127777A patent/FR1547803A/en not_active Expired
- 1967-11-21 DE DE19671639209 patent/DE1639209A1/en active Pending
- 1967-12-19 GB GB57547/67A patent/GB1216486A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2814043A4 (en) * | 2012-02-06 | 2015-07-01 | Ntn Toyo Bearing Co Ltd | Powder for magnetic core and powder magnetic core |
| US9773596B2 (en) | 2012-02-06 | 2017-09-26 | Ntn Corporation | Powder for magnetic core and powder magnetic core |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1547803A (en) | 1968-11-29 |
| US3498918A (en) | 1970-03-03 |
| NL6714288A (en) | 1968-06-24 |
| DE1639209A1 (en) | 1972-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1216486A (en) | Magnetic material | |
| SE7609265L (en) | WAY TO FORM A HEAT-RESISTANT, INSULATING COVER ON AN ORIENTATED SILK STEEL PLATE | |
| JPS57209859A (en) | Heat-resistant composition | |
| GB1536238A (en) | Acid hydrosol coating compositions | |
| US4265845A (en) | Process for the production of a ceramic heat-retaining brick | |
| GB1431624A (en) | Fireproof inorganic protective coating composition and method for its production and use | |
| ES256537A1 (en) | Silica-coated barium metaborate pigments and processes of producing the same | |
| ES346067A1 (en) | Refractory insulating compositions | |
| JPS53119741A (en) | Production of coated arcwlding electrode | |
| ES452523A1 (en) | Magnesium base treating agent of molten iron | |
| GB969394A (en) | Process for the production of dehydrogenation catalysts | |
| GB1136977A (en) | Compositions and methods for producing electrically conductive coatings | |
| JPS53119932A (en) | Coating film-forming composition | |
| JPS54102254A (en) | Coated electrode | |
| ES338246A1 (en) | Electrically conductive ceramic material and method of preparation | |
| ES416151A1 (en) | Refractory material | |
| GB1216702A (en) | Ceramic glazes | |
| JPS539834A (en) | Coating composition | |
| JPS55139461A (en) | Preparation of stable inorganic pigment composition | |
| GB548461A (en) | Improvements in or relating to magnetic cores and the production thereof | |
| ES435606A1 (en) | Development of hot strength in synthetic magnesia refractories having high b{11 o content | |
| ES419645A1 (en) | Production of improved ceramic shell moulds | |
| GB772449A (en) | Improvements in heat-resistant electrically conducting coatings | |
| GB667105A (en) | Improvements in and relating to combustion chamber liners | |
| GB609771A (en) | Improvements relating to the manufacture of bladed turbine discs, compressor rotors or the like |