Systems, devices and methods for spark plasma sintering
AssigneeRaytheon Technologies Corporation
InventorsJohn R. Paulus, Jon T. Moore, Benjamin E. Heneveld
Life of this patent
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Abstract
A method of forming an article including: contacting a fugitive tool with a powdered parent material; densifying the powdered material; and destructively removing the fugitive tool. A coating of a different material may be formed against the parent material using a similar approach.
Claims11
A method of forming an article comprising:
- contacting a porous fugitive tool comprising a carbonaceous material, a silica based ceramic, or a ceramic comprising alumina, zircon and/or cristobalite with a powdered parent material;
- densifying the powdered material;
- and destructively removing the porous fugitive tool, wherein densifying employs spark plasma sintering (SPS) and destructively removing the tool comprises burning in air or leaching with a hot caustic solution;
- wherein the parent material has nanoscale morphology.
A method of forming a coating comprising applying a coating material to a porous fugitive tool comprising a carbonaceous material, a silica based ceramic, or a ceramic comprising alumina, zircon and/or cristobalite;
- placing powdered parent material in contact with the coating material on the porous fugitive tool;
- densifying the powdered parent material and destructively removing the porous fugitive tool, wherein densifying employs spark plasma sintering (SPS) and destructively removing the tool comprises burning in air or leaching with a hot caustic solution;
- wherein the parent material has nanoscale morphology.
A method of locating an interior component comprising contacting a component with a porous fugitive tool comprising a carbonaceous material, a silica based ceramic, or a ceramic comprising alumina, zircon and/or cristobalite;
- placing the porous fugitive tool in a non-fugitive tool;
- placing powdered parent material in contact with the porous fugitive tool;
- densifying the powdered parent material and destructively removing the porous fugitive tool wherein densifying employs spark plasma sintering (SPS) and destructively removing the tool comprises burning in air or leaching with a hot caustic solution.
Dependencies are inferred from the claim text.