Hitachi Energy Switzerland Ag

Abb S.p.a.

Abb Schweiz Ag

Nanesa S.r.l.

Anna Andersson

Erik Johansson

Ulf Jansson

Sari Laihonen

Su Zhao

Mamoun Taher

Martin Wåhlander

Leili Tahershamsi

Helene Grennberg

Matteo Mulattieri

Francesco Bertocchi

Helena Grennberg

Martin WÅHLANDER

A mechanism for an electrical device, including a plurality of metal parts which are not arranged for conducting an electrical current of which a first part includes a first contact surface and a second part includes a second contact surface arranged to move in relation to, and in contact with, the first contact surface. At least one of the first and second parts includes a Graphene and Related Materials (GRM) at its contact surface, in a metal-GRM composite.

Mechanism for electrical device

The present disclosure relates to a method of electroplating of a silver-graphene composite onto a substrate. The method comprises preparing a plating bath comprising: a dissolved water soluble silver salt, dispersed graphene flakes, and an aqueous electrolyte comprising a silver complexing agent, a cationic surfactant, and a pH adjusting compound. The zeta potential of the graphene-electrolyte interface in the plating bath is adjusted to be positive and within the range of 10-30 mV by means of the cationic surfactant and the pH adjusting compound. The method also comprises applying a negative electric potential on the substrate surface such that electrophoresis of the graphene flakes occurs and said flakes are co-deposited with the silver during electroplating thereof to form a silver-graphene composite coating on the substrate surface.

Silver-graphene composite coating for sliding contact and electroplating method thereof

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.

Graphene composite material for sliding contact

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Västerås, Sweden

Anna Andersson