Disproportionation production of nano-metal powders and nano-metal oxide powders
US9278391B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Aug 2, 2013 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F9/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing nano-metal powder by providing a process metal to be processed. Selecting a metal halide identical to the process metal. Placing the process metal and selected metal halide in a controlled environment so that vapor from the selected metal halide can contact and react with the process metal. Heating the selected metal halide to a selected temperature to achieve vaporization of the selected metal halide at a desired vapor pressure, wherein the selected temperature controls the evaporation rate of the selected metal halide and the rate the nano-metal powder is formed. Heating the process metal to a temperature below the melting point of the process metal. Providing contact between the vapor of the selected metal halide and the process metal to form the nano-metal powder and reform the selected metal halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.