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US 2019/0168299 A1Published application
Additive manufacturing techniques and applications thereof
AssigneeKennametal Inc.
InventorsPaul D. Prichard, Kevin Gamble, John Skwara
Life of this patent
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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.
Claims36
A method of making a sintered article comprising:
- providing a composite article including a porous exterior printed from a powder composition via one or more additive manufacturing techniques, the porous exterior defining an interior volume;
- providing a loose powder component in the interior volume;
- and
- simultaneously sintering the porous exterior and loose powder component to provide the sintered article comprising a sintered interior and sintered exterior.
1 more element
A sintered article comprising:
- a sintered interior and sintered exterior, 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.
Dependencies are inferred from the claim text.