US 12,168,836 B2
Method for forming a cathodic protection coating on a turbomachine part
Julien Pierre Wagner, Moissy-Cramayel (FR); Léa Rébecca Gani, Moissy-Cramayel (FR); Stéphane Knittel, Moissy-Cramayel (FR); Florence Ansart, Moissy-Cramayel (FR); and Pierre-Louis Taberna, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE; and UNIVERSITE PAUL SABATIER-TOULOUSE III
Appl. No. 18/703,202
Filed by CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE, Toulouse (FR); UNIVERSITE PAUL SABATIER-TOULOUSE III, Toulouse (FR); and SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Oct. 21, 2022, PCT No. PCT/FR2022/051997
§ 371(c)(1), (2) Date Apr. 19, 2024,
PCT Pub. No. WO2023/073310, PCT Pub. Date May 4, 2023.
Claims priority of application No. 2111343 (FR), filed on Oct. 26, 2021.
Prior Publication US 2024/0328025 A1, Oct. 3, 2024
Int. Cl. C25D 13/02 (2006.01); C25D 13/14 (2006.01); C25D 13/22 (2006.01)
CPC C25D 13/02 (2013.01) [C25D 13/14 (2013.01); C25D 13/22 (2013.01)] 12 Claims
OG exemplary drawing
 
1. 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.