Method for making metal powders
US5294242A · kind A · utility
73Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1991 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Sep 30, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2999/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A metal powder is produced by atomizing molten metal in an electric arc spray gun and rapidly quenching the resulting droplets in a liquid cryogen to form fine, highly spherical, oxide-free particles. The rapid quenching yields particles with a very fine, uniform microstructure which melt rapidly and uniformly when later heated. The powder is especially well-suited for making solder paste for device fabrication in the electronics industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.