Method for forming a cathodic protection coating on a turbomachine part

A method for forming a cathodic protection coating on a substrate forming a turbomachine part, comprising:

• deposition, on the substrate, of particles for cathodic protection of the substrate, said deposition being performed by electrophoresis from an organic electrolyte comprising said particles in suspension in an organic liquid medium, the electrically charged particles moving and being deposited on the substrate in order to obtain the deposition of particles due to the application of an electric field between the substrate and a counter-electrode, and
• forming an inorganic matrix in pores of the deposit of particles thus produced, comprising:
• impregnating said deposit with an impregnation composition,
• drying heat treatment of the deposit impregnated by the impregnation composition, and
• densifying the deposit by mechanical compacting, after the drying heat treatment, in order to make the deposit electrically conductive.