Method of aluminization in the vapor phase on hollow metal parts of a turbomachine
AssigneeSnecma
InventorsMaxime Francois Roger Carlin, Lucie Marie Ida Lanciaux, Philippe Jacques Andre Le Henanff
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Abstract
A method of aluminization by deposit in the vapor phase for protection against oxidation at high temperature of a metal part of a turbomachine. The part includes a cavity with an opening that can be accessed from the outside. A halide is formed by reaction between a halogen and a metal donor containing aluminum, then the halide is transported by a carrier gas to come into contact with the metal part, the metal donor being placed at least partly in the cavity. The metal donor is in the form of a pellet obtained by hot sintering under pressure of a mixture of metal powder.
Claims20
A method for protecting a metal part of a turbomachine, said part comprising a cavity with an opening that can be accessed from the outside, against oxidation at high temperature by vapor phase aluminizing, the method comprising:
- forming a halide by reaction between a halogen and an aluminum-containing metal donor;
- and
- transporting the halide by a carrier gas to come into contact with said metal part,
- wherein a portion of the metal donor is in the form of a pellet obtained by hot sintering a mixture of metal powder under pressure, and
- wherein the pellet is placed at least partly inside said cavity, thereby resulting in vapor phase aluminization of the inside of the cavity.
Dependencies are inferred from the claim text.