Process for producing finely divided spherical metal powders
US4670047A · kind A · utility
47Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is disclosed for producing finely divided spherical metal powders. The process comprises forming a coating of a surface active agent which can be of the nonionic or anionic type on the surfaces of the particles of a metal powder, feeding the coated particles and a carrier gas into a high temperature zone and maintaining the particles in the zone for a sufficient time to melt at least about 50% by weight of the particles and to form droplets therefrom, and cooling the droplets to form metal particles having essentially a spherical shape with the majority of the particles having a size less than about 50 micrometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.