There is provided an Ag-plated material and a related technique, including: an Ag-plated layer on a substrate that comprises a conductive metal; and a plurality of two-layer plating structures on the substrate, the two-layer plating structures having a porous Ni-plated layer and an Ag-plated layer in this order from a substrate side.

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.

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.