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US 2020/0047251 A1Published application
Immiscible-interface assisted direct metal drawing
AssigneeUniversity of Iowa Research Foundation
InventorsXuan Song, Li He
Life of this patent
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Abstract
A method of three-dimensional printing of target material can include filling a receptacle with a matrix suspension comprising a powder matrix suspended in a first liquid. A second suspension can be extruded into the matrix suspension, where the second suspension can include a target powder suspended in a second liquid.
Claims20
A method of three-dimensional printing of target material comprising:
- filling a receptacle with a matrix suspension comprising a powder matrix suspended in a first liquid;
- extruding a second suspension into the matrix suspension, the second suspension comprising a target powder suspended in a second liquid;
- evaporating at least one of the first and second liquids by heating to a temperature high enough to facilitate evaporation of the first and second liquids but not high enough to sinter or melt the target powder or powder matrix;
- and
- heating the matrix suspension and the second suspension to a temperature high enough to dry the matrix suspension and the second suspension and high enough to sinter the target powder, but not high enough to sinter or melt the matrix powder, to form a sintered final product.
2 more elements
A method of creating a metal object using additive manufacturing, the method comprising:
- filling a receptacle with a matrix suspension including a powder matrix suspended in a first liquid;
- extruding a metal suspension into the matrix suspension, the metal suspension including a metal powder suspended in a second liquid;
- evaporating the first and second liquids by heating the metal suspension and the matrix suspension to a first temperature below a sinter temperature and a melt temperature of the powder metal and below a sinter temperature and a melt temperature of the powder matrix;
- and
- heating the powder metal and powder matrix to a second temperature at or above the sinter temperature of the powder metal to sinter the powder metal, the second temperature below the sinter temperature and the melt temperature of the powder matrix, to form a sintered metal product.
2 more elements
An article of manufacture comprising:
- a colloidal suspension of a matrix material suspended in a first liquid;
- a colloidal suspension of a build material suspended in a second liquid;
- wherein the first liquid and the second liquid are immiscible;
- and
- a receptacle holding the matrix material in a first liquid and the build material in a second liquid.
2 more elements
Dependencies are inferred from the claim text.