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US 10,201,831 B2Granted
Coating inspection method
AssigneeGeneral Electric Company
InventorsShankar Sivaramakrishnan, Wayne Charles Hasz, Kristen Hall Brosnan, James Edward Murphy
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Abstract
Provided herein are methods and compositions which allow for efficient inspection, maintenance and repair of ceramic coatings.
Claims33
A method for determination of uniformity of deposition of a material in a thermal barrier coating, the method comprising:
- (a) illuminating a surface of the thermal barrier coating with a stimulant radiation, wherein the thermal barrier coating is disposed on a superalloy substrate or on a metallic bond coated superalloy substrate, and wherein the thermal barrier coating comprises a plurality of surface-connected openings at the surface and the material disposed in at least some of the surface-connected openings, the material comprising
- i. one or more phosphors;
- and
- ii. one or more protective agents;
- (b) detecting an emission radiation from the material in response to the stimulant radiation;
- and
- (c) recording the distribution of the material within the thermal barrier coating based on the intensity of the detected emission radiation as a function of position on the surface.
4 more elements
A method for determination of uniformity of deposition of a material in a thermal barrier coating, the method comprising:
- (a) illuminating a surface of the thermal barrier coating with a UV radiation, wherein the thermal barrier coating is disposed on a superalloy substrate or on a metallic bond coated superalloy substrate, and wherein the thermal barrier coating comprises a plurality of surface-connected openings at the surface and the material disposed in at least some of the surface-connected openings, the material comprising
- i. phosphorescent alumina;
- and
- ii. one or more protective agents;
- (b) detecting an emission radiation from the material in response to the UV radiation;
- and
- (c) recording the distribution of the material within the thermal barrier coating based on the intensity of the detected emission radiation as a function of position on the surface.
4 more elements
Dependencies are inferred from the claim text.