Methods for preparation of three-dimensional bodies
First Claim
Patent Images
1. A process for fabricating a green fibrous monolith composite article comprising:
- providing a first formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof;
providing a second formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof;
forming a feed rod from the first and second powder compositions;
compressing the feed rod into a green filament; and
depositing the filament through a deposition nozzle in a controlled manner onto an associated surface in a directed orientation, by mechanically manipulating at least one of the deposition nozzle and the surface, to form a green fibrous monolith composite article.
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Abstract
Processes for mechanically fabricating two and three-dimensional fibrous monolith composites include preparing a fibrous monolith filament from a core composition of a first powder material and a boundary material of a second powder material. The filament includes a first portion of the core composition surrounded by a second portion of the boundary composition. One or more filaments are extruded through a mechanically-controlled deposition nozzle onto a working surface to create a fibrous monolith composite object. The objects may be formed directly from computer models and have complex geometries.
32 Citations
18 Claims
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1. A process for fabricating a green fibrous monolith composite article comprising:
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providing a first formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof; providing a second formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof; forming a feed rod from the first and second powder compositions; compressing the feed rod into a green filament; and depositing the filament through a deposition nozzle in a controlled manner onto an associated surface in a directed orientation, by mechanically manipulating at least one of the deposition nozzle and the surface, to form a green fibrous monolith composite article. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A process for fabricating a green fibrous monolith composite article comprising:
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providing a first formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof; providing a second formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof; forming a feed rod from the first and second powder compositions;
compressing the feed rod into a green filament; and
depositing the filament in a controlled manner onto an associated surface in a directed orientation to form a green fibrous monolith composite article, wherein a computer modeling program guides the deposition of the filament onto the surface in forming the green fibrous monolith composite article from the filament.
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18. A process for fabricating a green fibrous monolith composite article comprising:
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providing a first formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof providing a second formable powder composition, the powder selected from the group consisting of ceramic powder, metallic powder, ceramic-metallic powder, diamond powder, graphite powder and combinations thereof; forming a feed rod from the first and second powder compositions; compressing the feed rod into a green filament; depositing the filament in a controlled manner onto an associated surface in a directed orientation to form a green fibrous monolith composite article; creating a drawing of a desired composite object and separating the drawing into a plurality of segments utilizing a computer-aided design program; and generating input signals based on the drawing for directing a movable assembly for depositing the green filament onto the surface, wherein the movable assembly is controlled and guided in response to the signals.
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Specification