Process of manufacturing metallic nano-scale powders
US7758668B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2007 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Jun 11, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2999/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for synthesizing metal submicron and nano-scale powders for use in articles of manufacture. In a suitable reactor, single metal or multiple metal complexes are heated to a temperature whereby, upon contact with hydrogen gas, an exothermic reaction begins. The further temperature rise in response to the exothermic reaction is minimized by reducing the external heat input, thereby minimizing the agglomeration or sintering of the metal nano-scale particles resulting from the process. Preferably, after drawing a vacuum on the metal complexes in the reactor, the hydrogen is introduced at above, equal to or below ambient pressure and the reaction is purposely made slow to prevent agglomeration or sintering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.