A method for manufacturing a coating for a porous substrate, and to a mechanical part equipped with such a coating, the method including the following steps: providing a substrate to be protected, the substrate containing pores; providing a liquid suspension containing at least a first powder and a second powder, the first powder possessing a D50 strictly smaller than that of the second powder and an electrophoretic mobility strictly higher than that of the second powder; providing a DC electric generator; placing the substrate in the suspension, as a first electrode, and connecting the substrate to a first terminal of the electric generator; placing a second electrode in the suspension and connecting the second electrode to a second terminal of the electric generator; and applying a continuous or pulsed voltage of at least 10 V across the two electrodes for at least 1 minute.

The invention relates to a method for grafting an organic film onto an eclectically conductive or semiconductive surface by electro-reduction of a solution, wherein the solution comprises one diazonium salt and one monomer bearing at least one chain polymerizable functional group. During the electrolyzing process, at least one protocol consisting of an electrical polarization of the surface by applying a variable potential over at least a range of values which are more cathodic that the reduction or peak potential of all diazonium salts in said solution is applied. The invention also relates to an electrically conducting or semiconducting surface obtained by implementing this method. The invention further relates to electrolytic compositions.

The invention relates to a method for grafting an organic film onto an eclectically conductive or semiconductive surface by electro-reduction of a solution, wherein the solution comprises one diazonium salt and one monomer bearing at least one chain polymerizable functional group. During the electrolyzing process, at least one protocol consisting of an electrical polarization of the surface by applying a variable potential over at least a range of values which are more cathodic that the reduction or peak potential of all diazonium salts in said solution is applied. The invention also relates to an electrically conducting or semiconducting surface obtained by implementing this method. The invention further relates to electrolytic compositions.

A method of coating a substrate, the method comprises adding a nanocarbon material to an electrophoretic solution in an electrophoretic deposition apparatus including the substrate and an electrode spaced from the substrate, and applying a current to the substrate and the electrode to deposit the nanocarbon material onto the substrate.

A method of coating a substrate, the method comprises adding a nanocarbon material to an electrophoretic solution in an electrophoretic deposition apparatus including the substrate and an electrode spaced from the substrate, and applying a current to the substrate and the electrode to deposit the nanocarbon material onto the substrate.