Method for making metal-carbon composites and compositions
US10662509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2016 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Dec 13, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2007/066
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for making covetic metal-carbon composites or compositions by electron beam melt heating under vacuum (pressure <10−3 Torr) is described herein. This fabrication method is advantageous, in that it provides oxygen-free covetic materials in a process that allows precise control of the composition of the covetic material to be produced. The method described herein also can be applied to produce multi-element-carbon composites within a metal or alloy matrix, including high melting temperature materials such as ceramic particles or prefabricated nano- or micro-structures, such as carbon nanotubes or graphene compounds. The covetic reaction between metal and carbon takes place under the influence of flowing electrons through the melted metal-carbon precursor. This process creates strong bonding between nanocarbon structure and the metal elements in the melt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.