Methods for the formation and shaping of cooling channels, and related articles of manufacture
AssigneeGeneral Electric Company
InventorRonald Scott Bunker
Life of this patent
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Abstract
A method to modify the shape of a channel in a metallic substrate is described. The method includes the step of applying at least one metallic coating on selected portions of an interior surface of the channel, so as to alter the heat transfer characteristics of the channel during passage of a coolant fluid therethrough. Related articles that contain the modified channels are also described, such as gas turbine engine components.
Claims20
A method to modify the shape of a re-entrant shaped channel in a metallic substrate, the channel having a base, an opening in the substrate opposite the base, and sidewalls extending from the base to the opening, the method comprising:
- applying at least one metallic coating on the base of the channel, so as to alter the heat transfer characteristics of the channel during passage of a coolant fluid therethrough;
- and
- applying at least one layer of an oxidation resistant coating uniformly over the at least one metallic coating and the base and the sidewalls of the channel to provide oxidation-resistance to the channel.
An article in the form of a high-temperature substrate, comprising:
- at least one microchannel that is situated within an interior of the substrate, as part of a cooling circuit, wherein the microchannel includes a base, an opening in the substrate opposite the base, and sidewalls extending from the base to the opening;
- a metallic coating on the base of the channel that alters the heat transfer characteristics of the at least one microchannel during passage of a coolant fluid therethrough;
- and
- at least one layer of an oxidation resistant coating applied uniformly over the metallic coating and the base and the sidewalls of the channel to provide oxidation-resistance to the at least one microchannel.
A method to modify the shape of a re-entrant shaped channel in a metallic substrate, the channel having a base, an opening in the substrate opposite the base, and sidewalls extending from the base to the opening, the method comprising:
- applying at least one layer of an oxidation resistant coating uniformly over the base and the sidewalls of the channel to provide oxidation-resistance to the channel;
- and
- applying at least one metallic coating on the at least one layer of the oxidation resistant coating at the base of the channel, so as to alter the heat transfer characteristics of the channel during passage of a coolant fluid there through.
Dependencies are inferred from the claim text.