Method for manufacturing Fe—Si alloy powders
US8617290B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Oct 22, 2010 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jan 9, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F9/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a method for manufacturing a Fe—Si alloy powder. A method for manufacturing a Fe—Si alloy powder includes: providing a mixture of an Al2O3 powder, an active agent powder, a Si powder, and a Fe powder; heating the mixture with a temperature of 700° C. to 1200° C. in the hydrogen atomosphere; magnetically separating a Fe-containing material from the mixture; and separating a Fe—Si alloy powder by soaking the Fe-containing material in an alkali solution. In the heating of the mixture, the Si powder is deposited on the surface of the Fe powder and diffused into the Fe powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.