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AssigneeGeneral Electric Company
InventorsVenkat Subramaniam Venkataramani, James Anthony Brewer, Marcus Preston Borom, Wayne Charles Hasz, Lawrence Edward Szala
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A method for temporarily protecting at least one passage hole in a metal-based substrate from being obstructed by at least one coating applied over the substrate is disclosed. The method includes the following steps: (a) filling and covering the hole with a curable masking material which forms a protrusion over the hole; (b) curing the masking material; (c) applying at least one coating over the substrate and the masking material, wherein the coating does not substantially adhere to the protrusion; and then (d) removing the masking material to uncover the passage hole. Usually, there are an array of holes, and they serve as conduits for cooling gasses for an engine component. The curable masking material exhibits substantially non-Newtonian flow characteristics which make it especially suitable for forming protrusions of the proper size and shape on the coating-side of an engine part. Another embodiment of this invention relates to a the curable masking material itself, and to articles which include such a material.
A method for temporarily protecting a passage hole in a metal-based substrate from being obstructed by a coating applied over the substrate, wherein the substrate has a first surface and a second surface opposite the first surface, comprising the following steps:
The method of claim 20, wherein the thermoplastic resin is selected from the group consisting of acrylic resins, thermoplastic polyesters, polyamides, thermoplastic polyimides, polycarbonates, polyphenylene ethers, polyolefins, styrene-based resins, copolymers of any of the foregoing;
The method of 24, wherein the component is a combustion chamber.
A method for applying a thermal barrier coating to a surface of a high-temperature alloy substrate which includes cooling holes, wherein the cooling holes remain clear after the thermal barrier coating has been applied, comprising the following steps:
A method for repairing a damaged thermal barrier coating applied over a substrate which includes a passage hole extending from a first surface to a second surface on which the thermal barrier coating had been applied, comprising the following steps:
Dependencies are inferred from the claim text.