Method of forming ferrite film on particles or fibers
US4911957A · kind A · utility
14Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1988 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Sep 22, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method of forming a ferrite film on particulate and/or fibrous substrate by adding an oxidizer solution and a ferrous ion solution to a deoxidized solution containing particulate and/or fibrous substrates to form a thin ferrite film on the particulate and/or fibrous substrates, wherein an addition amount of the ferrous ion solution is controlled such that an oxidation-reduction potential of the deoxidized solution keeps approximately a center point between the oxidation side and the reduction side, when a pH value of the dioxidized solution is adjusted to a constant value between pH 6 and 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.