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US 11,998,987 B2Granted
Additive manufacturing techniques and applications thereof
AssigneeKennametal Inc.
InventorsPaul D. Prichard, Kevin Gamble, John Skwara
Life of this patent
Estimating the term…
Abstract
In one aspect, a method of making a sintered article comprises providing a composite article comprising a porous exterior printed from a powder composition via one or more additive manufacturing techniques, the porous exterior defining an interior volume and providing a loose powder component in the interior volume. The porous exterior and loose powder component are simultaneously sintered to provide the sintered article comprising a sintered interior and sintered exterior.
Claims20
A sintered article comprising:
- a sintered interior having a shape and comprising a sintered loose powder component;
- and
- a sintered exterior having a sintered powder composition that comprises an organic binder, the sintered exterior forming 5-20 volume percent of the sintered article and being continuous with the sintered interior, wherein a density gradient or porosity gradient exists between the sintered interior and sintered exterior,
- wherein the sintered interior and the sintered exterior are made of different materials.
1 more element
A sintered article comprising:
- a sintered interior having a shape and comprising a sintered loose powder component;
- and
- a sintered exterior having a sintered powder composition that comprises an organic binder, the sintered exterior forming 10-30 volume percent of the sintered article and being continuous with the sintered interior, wherein a density gradient or porosity gradient exists between the sintered interior and sintered exterior, and an average particle size of a powder of the sintered loose powder component and of the sintered powder composition is the same,
- wherein the sintered interior and the sintered exterior are made of different materials.
1 more element
A sintered article comprising:
- a sintered interior comprising a sintered loose powder component;
- and
- a sintered exterior having a sintered powder composition that comprises an organic binder, the sintered exterior forming less than 30 volume percent of the sintered article, wherein a density gradient or porosity gradient exists between the sintered interior and sintered exterior, and average density of the sintered article increases linearly with decreasing volume percent of the sintered exterior, wherein
- the sintered interior and the sintered exterior are made of different materials.
1 more element
Dependencies are inferred from the claim text.