GB689292A - Magnetic ferrite of high maximum permeability and high curie point - Google Patents
Magnetic ferrite of high maximum permeability and high curie pointInfo
- Publication number
- GB689292A GB689292A GB21809/51A GB2180951A GB689292A GB 689292 A GB689292 A GB 689292A GB 21809/51 A GB21809/51 A GB 21809/51A GB 2180951 A GB2180951 A GB 2180951A GB 689292 A GB689292 A GB 689292A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixed
- powdered
- gauss
- magnetic ferrite
- cuo
- 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
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
- C04B35/42—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 chromites
-
- 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
-
- 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
- C04B35/12—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 chromium oxide
-
- 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
-
- 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
- C04B35/44—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 aluminates
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
689,292. Magnetic compositions. STEATITE RESEARCH CORPORATION. Sept. 17, 1951 [Oct. 7. 1950], No. 21809/51. Class 38 (ii). A magnetic ferrite composition has the formula x(NiO,ZnO,CuO) y Fe 2 O 3 in which x : y is between 0.98 : 1.02 and 0.95 : 1.05 and the CuO forms 1.25 to 7 per cent by weight. Copper oxide, carbonate, or basic carbonate is mixed with the right proportions of the other powdered oxides, milled, in water, dried, powdered, mixed with a little binder such as flour, gum or wax emulsion, pressed, fired at about 2400‹ F. for several hours in air and cooled. The initial permeability is between 650 and 1200, maximum permeability exceeds 4000, saturation flux density is about 4000 gauss, coercivity is less than 0.25 oersted, brine point is between 120‹ and 190‹ C., residual magnetism is not more than 2000 gauss, and the hysteresis and other losses measured by the coefficient a of the Legg equation and below 15 Î 10<SP>-6</SP>. pressing, the powdered oxides may be separated into several grain sizes, the parts being mixed in selected proportions. Specification 677,418 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US313463XA | 1950-10-07 | 1950-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689292A true GB689292A (en) | 1953-03-25 |
Family
ID=21858924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21809/51A Expired GB689292A (en) | 1950-10-07 | 1951-09-17 | Magnetic ferrite of high maximum permeability and high curie point |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH313463A (en) |
| FR (1) | FR1042493A (en) |
| GB (1) | GB689292A (en) |
| NL (1) | NL96172C (en) |
-
0
- NL NL96172D patent/NL96172C/xx active
-
1951
- 1951-09-17 GB GB21809/51A patent/GB689292A/en not_active Expired
- 1951-09-19 CH CH313463D patent/CH313463A/en unknown
- 1951-10-01 FR FR1042493D patent/FR1042493A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1042493A (en) | 1953-11-02 |
| CH313463A (en) | 1956-04-15 |
| NL96172C (en) |
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