GB645056A - Improved process of manufacturing magnetic material - Google Patents
Improved process of manufacturing magnetic materialInfo
- Publication number
- GB645056A GB645056A GB7310/47A GB731047A GB645056A GB 645056 A GB645056 A GB 645056A GB 7310/47 A GB7310/47 A GB 7310/47A GB 731047 A GB731047 A GB 731047A GB 645056 A GB645056 A GB 645056A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- oxide
- ferric
- active
- magnetic material
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- LHRXTFDXJQAGAV-UHFFFAOYSA-L disodium 3-hydroxy-4-(naphthalen-1-yldiazenyl)naphthalene-2,7-disulfonate Chemical compound [Na+].[Na+].Oc1c(cc2cc(ccc2c1N=Nc1cccc2ccccc12)S([O-])(=O)=O)S([O-])(=O)=O LHRXTFDXJQAGAV-UHFFFAOYSA-L 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 150000002505 iron Chemical class 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 150000002506 iron compounds Chemical class 0.000 abstract 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 abstract 1
- 239000000320 mechanical mixture Substances 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 235000014692 zinc oxide Nutrition 0.000 abstract 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 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
- H01F1/34—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 non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compounds Of Iron (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Ferromagnetic ferrites for use as magnetic cores are made by sintering in an atmosphere of oxygen a mechanical mixture of metallic oxides of which the iron oxide content is in the "active" state and free from alkali. The active oxide, recognizable by its light colour preferably between bordeaux red and orange, is produced by precipitating the hydrate of iron from an iron salt solution for example ferric chloride, with ammonia, and dehydrating the precipitate at a low temperature for example 105 DEG C., or by heating a solid iron compound such as ferric sulphate to produce ferric oxide, which is then mixed with, for example copper and zinc oxides and sintered at a temperature between 900 DEG and 1100 DEG C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL645056X | 1944-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645056A true GB645056A (en) | 1950-10-25 |
Family
ID=19791897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7310/47A Expired GB645056A (en) | 1944-05-30 | 1947-03-17 | Improved process of manufacturing magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB645056A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2989477A (en) * | 1955-11-21 | 1961-06-20 | Steatit Magnesia Ag | Ferrite with constricted magnetic hysteresis loop |
| US2989478A (en) * | 1955-11-16 | 1961-06-20 | Stcatit Magnesia Ag | Ferrite with constricted magnetic hysteresis loop |
-
1947
- 1947-03-17 GB GB7310/47A patent/GB645056A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2989478A (en) * | 1955-11-16 | 1961-06-20 | Stcatit Magnesia Ag | Ferrite with constricted magnetic hysteresis loop |
| US3024196A (en) * | 1955-11-16 | 1962-03-06 | Steatit Magnesia Ag | Ferrite with constricted magnetic hysteresis loop |
| US2989477A (en) * | 1955-11-21 | 1961-06-20 | Steatit Magnesia Ag | Ferrite with constricted magnetic hysteresis loop |
| US2989479A (en) * | 1955-11-21 | 1961-06-20 | Steatit Magnesia Ag | Ferrite with constricted magnetic hysteresis loop |
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