Method and device for dry treatment of metal surfaces by means of electrically active solid particles

A method for treatment of a metal surface, the method comprising:

• placing a plurality of electrically active solid particles in contact with an electrode that is connected to a first pole of an electric source and thereafter shooting the plurality of electrically active solid particles towards the metal surface that is connected to a second pole of the electric source so that the plurality of electrically active solid particles contact and transmit to the metal surface electricity, the plurality of electrically active solid particles comprising microporous gel particles of sulfonated polystyrene-divinylbenzene structure:
• wherein the shooting of the plurality of electrically active solid particles includes creating a chain of electrically active solid particles that extends between the electrode and the metal surface,
• neighboring solid particles in the chain of electrically active solid particles being electrically connected and separated by a medium that provides electrical conductivity between the neighboring solid particles, the medium comprising solid or liquid elements suspended in a gas;
• and
• treating the metal surface with the plurality of electrically active solid particles.