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US 8,574,686 B2Granted
Microwave brazing process for forming coatings
AssigneeGeneral Electric Company
InventorsLaurent Cretegny, Daniel Joseph Lewis, Jeffrey Reid Thyssen
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AssigneeGeneral Electric Company
InventorsLaurent Cretegny, Daniel Joseph Lewis, Jeffrey Reid Thyssen
Estimating the term…
A process for forming a coating on a surface of a substrate, so that heating of the coating material is selective and sufficient to cause at least partial melting of the coating material and permit bonding to the substrate without excessively heating the substrate so as not to significantly degrade its properties. The process generally entails forming a brazing paste containing powder particles dispersed in a binder. The particles are formed of a composition that is susceptible to microwave radiation. The brazing paste is then applied to the surface of the substrate and subjected to microwave radiation so that the particles couple with the microwave radiation and are sufficiently heated to burn off the binder and then at least partially melt to form an at least partially molten layer on the substrate. The microwave radiation is then interrupted to allow the at least partially molten layer to cool, solidify, and form the coating.
A process for forming a coating on a surface of a substrate, the process comprising:
A process for forming a coating on a surface region of a gas turbine engine component formed of a nickel-base superalloy, the process comprising:
Dependencies are inferred from the claim text.