Process of manufacturing nano-scale powders
US8721762B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2010 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
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 about, 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.