Method for vapor phase aluminiding of a gas turbine blade...

Details Method for vapor phase aluminiding of a gas turbine blade... Method for vapor phase aluminiding of a gas turbine blade...

C - Chemistry, Metallurgy

23

C

C23C 16/12 (2006.01) C23C 10/04 (2006.01) C23C 10/48 (2006.01) C23C 16/06 (2006.01) C25D 3/56 (2006.01) F01D 5/28 (2006.01)

Patent

CA 2441490

A gas turbine blade (20) to be protected by an aluminide coating is placed within a masking enclosure (50) including an airfoil enclosure (52) that prevents deposition on the airfoil (22) of the gas turbine blade (20), and a dovetail enclosure (54) that prevents deposition on the dovetail (26) of the gas turbine blade (20). The assembly is vapor phase aluminided such that aluminum is deposited on an exposed portion (92) of the gas turbine blade (20) that is not within the masking enclosure (50).

Une aube de turbine à gaz (20) protégée par un revêtement d'aluminide est placée dans une enceinte de masquage (50) comportant une enceinte à profil aérodynamique (52) qui empêche le tout dépôt sur le profil aérodynamique (22) de l'aube de turbine à gaz (20), et une enceinte à queue d'aronde (54) qui empêche tout dépôt sur la queue d'aronde (26) de l'aube de turbine à gaz (20). L'ensemble est aluminidé en phase gazeuse, de sorte que l'aluminum est déposé sur une partie exposée (92) de l'aube de turbine à gaz (20), hors de l'enceinte de masquage (50).

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