Process For Production Of Graphene/Silicon Carbide Ceramic Composites

摘要

We provide a method for the in situ development of graphene containing silicon carbide (SiC) matrix ceramic composites, and more particularly to the in situ graphene growth within the bulk ceramic through a single-step approach during SiC ceramics densification using an electric current activated/assisted sintering (ECAS) technique. This approach allows processing dense, robust, highly electrical conducting and well dispersed nanocomposites having a percolated graphene network, eliminating the handling of potentially hazardous nanostructures. Graphene/SiC components could be used in technological applications under strong demanding conditions where good electrical, thermal, mechanical and/or tribological properties are required, such as micro and nanoelectromechanical systems (MEMS and NEMS), sensors, actuators, heat exchangers, breaks, components for engines, armours, cutting tools, microturbines or microrotors.

主权项

1. A method for manufacturing in situ graphene containing silicon carbide matrix ceramic composites, the method comprising:
a) mixing a ceramic powder composition comprising silica carbide and at least one sintering additive; b) densifying the ceramic powder composition, resulting in graphene growth within a ceramic material from the ceramic powder composition.