METHOD OF DEPOSITION OF PROTECTIVE COATINGS ON DETAILS MADE OUT OF REFRACTORY ALLOYS Russian patent published in 2005 - IPC

FIELD: methods of deposition of protective coatings.

SUBSTANCE: the invention is pertaining to the methods of deposition of protective coatings applied to details of power and transport turbines and, in particular, of gas turbines of aircraft engines. The offered method provides for deposition on the metallic details of the complex protective coating consisting of a set of microlayers. The microlayers consist of intermetallic compounds (IMC), multicomponent condensation alloys (MCCA), oxides (O) and the transient microlayers (TM)of the implanted atoms. The method includes the following operations: cleaning of a detail surface; modification of the detail surface; deposition of the condensation coating of a multicomponent alloy; formation of the transient microlayers by ion implantation; deposition of the intermetallic layers by the method of a diffusion metallization or a ionic-plasma spraying and an annealing; formation of the transition layers by ion stirring action; deposition of the oxide layers by a controlled annealing, a slip method or by electron-beam spraying; modification of the coating outer surface by implantation; an additional treatment of the coating. The technical result of the invention is production of protective coatings with a set of improved characteristics, and also an essential increase of the service life of components of machines.

EFFECT: the invention ensures improved characteristics of protective coatings and an essential increase of the service life of components of machines.

15 cl, 2 dwg, 1 tbl, 12 ex