GB619779A - Improvements in iron powder and cores produced therefrom - Google Patents
Improvements in iron powder and cores produced therefromInfo
- Publication number
- GB619779A GB619779A GB29564/46A GB2956446A GB619779A GB 619779 A GB619779 A GB 619779A GB 29564/46 A GB29564/46 A GB 29564/46A GB 2956446 A GB2956446 A GB 2956446A GB 619779 A GB619779 A GB 619779A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- permeability
- specifications
- exceeding
- eddy current
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Soft Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
Powdered iron of high permeability and low eddy current loss is manufactured by thermal decomposition of iron carbonyl producing spherical particles less than 12 microns in diameter, the powdered iron being reduced with a reducing gas at a temperature not exceeding 430 DEG C. and for a time which prevents sintering until the carbon content is reduced to a maximum of .029 per cent. The powder may be heated in hydrogen for 7-12 hours at 380-430 DEG C. and then lightly milled in a ball mill to break up any agglomeration of particles. The powder so obtained having an initial permeability of 40-72 may be mixed with a 2.5 per cent solution of a butareol soluble urea formaldehyde condensation product in n-butyl alcohol, the alcohol evaporated and the powder heated to set the resin. The grains obtained may then be moulded into cores having a permeability exceeding 50 and an eddy current loss coefficient of 0.6-7.0 x 10-7 ohms per henry and cycles per second squared. Specifications 269,677, 286,167, 306,215, [all in Class 72], and U.S.A. Specifications 1,783,560 and 1,783,561 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US619779XA | 1946-01-18 | 1946-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB619779A true GB619779A (en) | 1949-03-15 |
Family
ID=22039436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29564/46A Expired GB619779A (en) | 1946-01-18 | 1946-10-03 | Improvements in iron powder and cores produced therefrom |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB619779A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023034600A1 (en) * | 2021-09-03 | 2023-03-09 | 3D Glass Solutions, Inc. | Power amplifier system in a package |
| US11894594B2 (en) | 2017-12-15 | 2024-02-06 | 3D Glass Solutions, Inc. | Coupled transmission line resonate RF filter |
| US11908617B2 (en) | 2020-04-17 | 2024-02-20 | 3D Glass Solutions, Inc. | Broadband induction |
| US11929199B2 (en) | 2014-05-05 | 2024-03-12 | 3D Glass Solutions, Inc. | 2D and 3D inductors fabricating photoactive substrates |
| US11962057B2 (en) | 2019-04-05 | 2024-04-16 | 3D Glass Solutions, Inc. | Glass based empty substrate integrated waveguide devices |
-
1946
- 1946-10-03 GB GB29564/46A patent/GB619779A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11929199B2 (en) | 2014-05-05 | 2024-03-12 | 3D Glass Solutions, Inc. | 2D and 3D inductors fabricating photoactive substrates |
| US11894594B2 (en) | 2017-12-15 | 2024-02-06 | 3D Glass Solutions, Inc. | Coupled transmission line resonate RF filter |
| US11962057B2 (en) | 2019-04-05 | 2024-04-16 | 3D Glass Solutions, Inc. | Glass based empty substrate integrated waveguide devices |
| US11908617B2 (en) | 2020-04-17 | 2024-02-20 | 3D Glass Solutions, Inc. | Broadband induction |
| WO2023034600A1 (en) * | 2021-09-03 | 2023-03-09 | 3D Glass Solutions, Inc. | Power amplifier system in a package |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108046789B (en) | Preparation method of electromagnetic shielding composite material | |
| CN104529423B (en) | A kind of low temperature factor resistance to stress nickel-zinc ferrite and preparation method thereof | |
| CN109411175A (en) | A kind of inductance of high magnetic permeability soft magnetic powder production method and soft magnetic powder | |
| GB619779A (en) | Improvements in iron powder and cores produced therefrom | |
| US20240067568A1 (en) | Two-component microwave ferrite material, preparation method therefor and application thereof | |
| CN112908677A (en) | Preparation method of high-permeability low-loss integrated inductance material | |
| CN108774005A (en) | Vitreum formula additive and preparation method and the application in ferrite permanent-magnet materials preparation | |
| CN108314812A (en) | A kind of preparation method of memory-type magnetic rubber | |
| CN103420669B (en) | A kind of Ni-Zn soft magnetic ferrite and preparation method thereof | |
| GB739069A (en) | Improvements in or relating to methods of manufacturing magnetic ferrites | |
| JPH0521220A (en) | Method for producing injection-molded pure iron-sintered soft magnetic material with high residual magnetic flux density | |
| ES205711A1 (en) | Composite lead chromate-lead silicate pigment | |
| CN114477987B (en) | Preparation process of wide-temperature manganese-zinc ferrite material | |
| FR2130577A1 (en) | Dense graphite structures - by hot pressure - moulding process, for fuel cells | |
| GB679453A (en) | Non-metallic magnetic powder and magnetic cores made therefrom | |
| CN114380588B (en) | Preparation method of dry-pressed anisotropic permanent magnetic ferrite | |
| GB731003A (en) | Iron nitride of improved high frequency electro-magnetic properties | |
| GB797168A (en) | Improvements in or relating to ferrite material for use at microwave frequencies andto methods of manufacturing such material | |
| GB743792A (en) | Improvements in or relating to the production of magnetisable powder suitable for the manufacture of permanent magnets | |
| GB634504A (en) | Improvements in or relating to magnetic cores for use at high frequencies | |
| US2687349A (en) | Production of iron powder | |
| CN106920624A (en) | A kind of magneto-dependent sensor integral type magnetic core | |
| GB682897A (en) | Improved magnetic powders and method of making the same | |
| GB740894A (en) | Improvements in or relating to ferromagnetic material or ferromagnetic bodies and methods of manufacturing such material | |
| CN117711732A (en) | High-quality-factor amorphous nanocrystalline soft magnetic powder core and preparation method thereof |