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US 11,183,344 B2Granted
Graphene composite material for sliding contact
AssigneeHitachi Energy Switzerland AG
InventorsAnna Andersson, Mamoun Taher, Ulf Jansson, Martin Wåhlander, Leili Tahershamsi, Helene Grennberg
Life of this patent
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Abstract
A metal-graphene composite product in the form of a sliding contact of an electric power application, in which graphene flakes are dispersed in a matrix of the metal, as well as to a method for obtaining such a composite product.
Claims8
A metal-graphene composite product in the form of a sliding contact of an electric power application, the composite product comprising:
- a metal matrix that consists of one or more of Ag, Au, Pt, Cu, Al, In and Sn;
- and
- graphene flakes that are dispersed in the metal matrix, wherein the graphene is present in an amount within the range of from 0.005 to less than 0.02 wt %, wherein the graphene flakes comprise graphene and graphene oxide, and wherein the graphene flakes have an average longest axis within the range of 30 microns to 50 microns.
Dependencies are inferred from the claim text.