Dry Mechanism with Multilayer Coating

An electrical device, comprising:

• an electrical conductor;
• and
• a mechanism comprising a first part having a first contact surface, and a second part having a second contact surface arranged to move in relation to, and in contact with, the first contact surface;
• wherein the first contact surface is provided by a multilayer coating on a surface of a metallic substrate of the first part;
• and
• wherein the multilayer coating comprises a base layer arrangement arranged on the surface of the metallic substrate of the first part;
• a composite layer arranged on top of the base layer, the composite layer consisting of particles of a Graphene and Related Materials (GRM) material in a metal matrix;
• and a metallic top layer arranged on top of the composite layer.

A method of producing a mechanism, the method comprising:

• for a base layer arrangement, providing a metal electrolytic solution comprising metal ions;
• depositing at least a layer of the base layer arrangement on at least a portion of a surface of the substrate by electrodeposition, whereby the metal ions are deposited to form a metallic base layer on the surface of the substrate;
• for a composite layer, providing a metal-graphene electrolytic solution comprising graphene particles and metal ions;
• depositing the composite layer on the base layer arrangement by electrodeposition whereby the graphene particles and metal ions are co-deposited to form a metal-graphene composite layer on top of the base layer arrangement;
• for a top layer, providing a metal electrolytic solution comprising nickel ions;
• and
• depositing the top layer on the composite layer by electrodeposition, whereby the nickel ions are deposited to form a metallic top layer on top of the composite layer.