Article made of a ceramic foam joined to a metallic nonfoam, and its preparation
AssigneeGeneral Electric Company
InventorsRichard John Grylls, Curtiss Mitchell Austin
Life of this patent
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Abstract
An article of manufacture includes a metallic nonfoam region, and a ceramic foam region joined to the metallic region. The ceramic foam region is an open-cell solid ceramic foam made of ceramic cell walls having an intracellular volume therebetween. The ceramic is preferably alumina. The intracellular volume may be empty porosity, or an intracellular metal such as an intracellular nickel-base superalloy.
Claims21
An article of manufacture, comprising:
- a metallic nonfoam region, wherein the nonfoam region comprises a primary nickel-base superalloy;
- and
- a ceramic foam region joined to the metallic nonfoam region, wherein the ceramic foam region comprises an open-cell solid foam made of ceramic cell walls having intracellular volume therebetween,
- wherein the ceramic cell walls comprise a ceramic oxide, and
- wherein the intracellular volume is selected from the group consisting of empty porosity and an intracellular metal.
An article of manufacture, comprising:
- a metallic nonfoam region;
- a ceramic foam region joined to the metallic nonfoam region, wherein the ceramic foam region comprises an open-cell solid foam made of ceramic cell walls having intracellular volume therebetween,
- wherein the ceramic cell walls comprise ceramic oxide, and
- wherein the intracellular volume is selected from the group consisting of empty porosity and an intracellular metal;
- and
- a diffusional joint between the metallic nonfoam region and the ceramic foam region.
An article of manufacture comprising a component of a gas turbine engine, the component comprising:
- a metallic nonfoam region comprising a primary nickel-base superalloy;
- and
- a ceramic foam region joined to the metallic region, wherein the ceramic foam region comprises an open-cell solid ceramic foam made of alumina cell walls having intracellular volume therebetween.
An article of manufacture, comprising:
- a metallic nonfoam region;
- and
- a ceramic foam region joined to the metallic nonfoam region, wherein the ceramic foam region comprises an open-cell solid foam made of ceramic cell walls having intracellular volume therebetween,
- wherein the ceramic cell walls comprise a ceramic oxide, and
- wherein the intracellular volume comprises an intracellular nickel-base superalloy.
Dependencies are inferred from the claim text.