Process for producing finely divided spherical metal powders containing an iron group metal and a readily oxidizable metal
US4802915A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1988 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Apr 25, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F1/065
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alloys of a first group of metals containing at least one iron group metal and one or more easily oxidizable metals can be formed by forming an aqueous solution of the first group of metals, forming solids containing the metals from the solution, reducing the solids to a metallic powder, converting the metallic powder to metallic alloy spherical powders, agglomeration the spherical powder with one or more easily oxidizable metals in a non-oxidizing atmosphere, thereafter the agglomerates are subjected to a sufficient temperatures under non-oxidizing conditions to form an alloy. Alternatively, the easily oxidizable metals can be agglomerated with the solids containing the iron group metal prior to converting the agglomerates to a spherical alloy powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.