Method of restoring alloy depletion in an airfoil around cooling holes

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United States of America Patent

PATENT NO 12203384
SERIAL NO

18468404

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Abstract

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A method of reducing depletion of elements from an airfoil includes disposing a bond coating on the airfoil, where the airfoil comprises cooling channels. The airfoil includes a material that has an initial composition. A cooling hole is machined in the airfoil to contact the cooling channels such that a fluid travelling in the cooling channel may be discharged via the cooling hole. The machining of the cooling hole results in a formation of a depleted region around the cooling hole. The depleted region is depleted of a portion of the initial composition of the airfoil. A top coat is disposed on the bond coat. The airfoil is subjected to a heat treatment at a temperature effective to promote diffusion of elements from a non-depleted region to the depleted region around the cooling hole.

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Patent Owner(s)

Patent OwnerAddress
RTX CORPORATION10 FARM SPRINGS ROAD FARMINGTON CT 06032

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Craig, Brian Richard Tequesta, US 4 0
Kelton, Randall D Ft. Worth, US 1 0
Liu, Xuan Glastonbury, US 214 1967
Minor, Michael J Mansfield, US 34 132
Ray, Arka Arlington, US 3 7

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