Inspectable coatings and methods for using
AssigneeGeneral Electric Company
InventorsMartin Matthew Morra, Rachel Marie Gettings, Erica Sampson
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Abstract
A coating including a plurality of indicator oxide nanoparticles, a binder, and a wetting agent. A sulfidation corrosion mitigation coating including: a sulfidation corrosion mitigation material, a binder, and a plurality of indicator oxide nanoparticles. An article including a metal alloy substrate having the sulfidation corrosion mitigation coating thereon is also provided. The sulfidation corrosion mitigation coating can include a first indicator layer containing indicator oxide nanoparticles disposed on the surface of the metal alloy substrate. Methods for inspection of an article having a coating containing a plurality of indicator oxide nanoparticles is also provided.
Claims18
A sulfidation corrosion mitigation coating, comprising:
- a layer of a sulfidation corrosion mitigation material that is catalytic to decomposition of sulfur-containing compounds to mitigate corrosion of a surface from sulfur-containing compounds, the layer of the sulfidation corrosion mitigation material comprising a binder, a first indicator oxide, and the sulfidation corrosion mitigation material;
- and
- a first indicator layer disposed beneath the layer of the sulfidation corrosion mitigation material, the first indicator layer comprising:
- a binder;
- a wetting agent;
- and
- a second indicator oxide, wherein the second indicator oxide comprises a plurality of indicator oxide nanoparticles;
- wherein the first indicator layer has an increased concentration of any indicator oxide relative to the layer of the sulfidation corrosion mitigation material such that the first indicactor layer fluoresces upon removal of the layer of the sulfidation corrosion mitigation material, and
- wherein the sulfidation corrosion mitigation coating has a thickness of 1 μm to 15 μm.
Dependencies are inferred from the claim text.