Method for producing iron-containing complex oxide powders
US5736111A · kind A · utility
8Cited by
1References
6Claims
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Key dates
| Filing date | Jul 29, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Jul 29, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/62
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing an iron-containing complex oxide powder represented by the general formula: EQU XO.nFe.sub.2 O.sub.3 wherein X represents one or more elements selected from the group consisting of Pb, Mg, Ca, Sr, Ba, Zn, Cu, Mn, Fe, Co and Ni and n represents an integer of 1 to 6, which comprises heating a mixture of an oxide of an X atom and iron oxide, or a mixture of a compound of the X atom and a compound of iron, which can be converted into the oxides, in an atmosphere gas containing at least one gas selected from a bromine gas, an iodine gas, a hydrogen bromide gas and a hydrogen iodide gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.