The electrochemical ruthenium plating process is a process by which, by applying a potential difference, an object is covered with a thin layer of metallic ruthenium.

Ruthenium deposits are characterised from an aesthetic point of view by giving the treated objects a black or dark grey colour.

The ruthenium that is deposited on the object is present in the solution called electroplating bath and is deposited in the form of a metal alloy.

The surface where the ruthenium alloy will be deposited must be cleaned by a preparation process.

From a functional point of view, the characteristic that distinguishes ruthenium deposits is their extreme hardness.

Ruthenium plating is sometimes an alternative to rhodium plating and also offers the characteristic of being hypoallergenic.