Methods for inhibiting corrosion of high strength steel turbine components

Disclosed herein is a method for inhibiting corrosion of a high strength steel turbine component (1) subject to rotary stress. The method comprises applying a sacrificial overlay coating material (4) to at least a portion of a surface of the component (1) to form a protected component, and applying...

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Bibliographische Detailangaben
Hauptverfasser:	Kauffung, Thomas Allen, Rhoads, Mark Alan, Groh, John Raymond
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINE PLANTS IN GENERAL HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Disclosed herein is a method for inhibiting corrosion of a high strength steel turbine component (1) subject to rotary stress. The method comprises applying a sacrificial overlay coating material (4) to at least a portion of a surface of the component (1) to form a protected component, and applying a seal material to at least a portion of the protected component to form a seal coat having a temperature resistance of greater than about 500 °F. Also disclosed herein is a turbine component (1) and corresponding engine protected by the method. Further provided is a method for repairing a high strength steel component of a turbofan engine. These methods are capable of inhibiting at least one of stress corrosion cracking or surface pitting of the turbine component (1) after exposure to corrosive water.