Process for forming an oxidation and corrosion resistant coating on selected surfaces of an airfoil
AssigneeUnited Technologies Corporation
InventorsTerry T. Perry, Krishnangshu Bose, David W LaFlamme, Lester J Magyar
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Abstract
A process for forming an oxidation and corrosion resistant coating on selective surfaces of an airfoil providing a chamber having an external wall which receives a hollow sleeve for defining an internal space and an annular space between the external wall and sleeve. The airfoil to be coated is located within the internal space. An activator is provided in the internal space below the airfoil. The chemical coating composition is located in the annular space. The chamber is closed and heated to a desired temperature for a sufficient time to coat selective surfaces of the airfoil with the coated composition.
Claims9
A process for forming an oxidation and corrosion resistant coating on selected surfaces of an airfoil comprising:
- providing an apparatus comprising an external wall defining a chamber, a sleeve defining an internal space located within said chamber and spaced from said external wall so as to define between said external wall and sleeve an annular space, said sleeve having a plurality of passages;
- positioning an airfoil within said internal space;
- placing an activator within said internal space below said airfoil;
- placing a chemical coating composition within said annular space;
- closing said chamber;
- and
- heating said chamber to a desired time for sufficient time to coat selected surfaces of the airfoil with the coating composition.
Dependencies are inferred from the claim text.