At least part the manner null conservation by the metal part which is formed by honeycomb structure aluminum treating

摘要

PROBLEM TO BE SOLVED: To provide a method of protecting the whole of the exposed surfaces of parts constituted at least partially by a honeycomb structure by aluminizing, particularly, a method of protecting the whole of the surfaces of cells having the above honeycomb structure.;SOLUTION: At least one gaseous precursor of the deposit to be made and comprising an aluminum compound is brought with the help of a carrier gas into contact with the surfaces of parts placed in an enclosure. The carrier gas is selected from helium and argon, and the pressure inside the enclosure is selected in such a manner that the mean free path of the carrier gas molecules is at least twice as long as that of argon molecules under atmospheric pressure. The method is particularly suitable for aluminizing a low pressure turbine ring sector of a turbomachine, the sector being provided with an abradable honeycomb coating.;COPYRIGHT: (C)2003,JPO