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US 11,028,476 B2Granted
Method of coating metallic powder particles
AssigneeRaytheon Technologies Corporation
InventorsYing She, James T. Beals
Life of this patent
Estimating the term…
Abstract
A method and system for coating metallic powder particles is provided. The method includes: disposing an amount of metallic powder particulates within a fluidizing reactor; removing moisture adhered to the powder particles disposed within the reactor using a working gas; coating the powder particles disposed within the reactor using a precursor gas; and purging the precursor gas from the reactor using the working gas.
Claims20
A method comprising:
- disposing an amount of metallic powder particulates within an inner vessel of a fluidizing reactor, the inner vessel entirely disposed within an outer vessel of the fluidizing reactor between an inner axial end and an outer axial end of the outer vessel and a radially-extending sidewall of the outer vessel extending from the inner axial end to the outer axial end, the inner vessel comprising a porous plate forming a portion of the inner vessel;
- and
- coating the metallic powder particulates disposed within the inner vessel with a material present within a precursor gas by directing the precursor gas through an annular region disposed between the inner vessel and the outer vessel and through the porous plate into the inner vessel;
- wherein the coating includes coating the metallic powder particulates with the material in an amount such that the coated metallic powder particulates have a level of reflectivity that is acceptable for subsequent processing of the coated metallic powder particulates within an additive manufacturing process.
1 more element
A method comprising:
- providing a system having a fluidizing reactor comprising an outer vessel and an inner vessel entirely disposed within the outer vessel, a precursor gas source, and a processor adapted to execute instructions to control and monitor operation of the system, wherein the processor is in communication with a memory operable to store the executable instructions, the inner vessel comprising a porous plate forming a portion of the inner vessel;
- disposing an amount of metallic powder particulates within the inner vessel;
- and
- controlling the system to coat the metallic powder particulates disposed within the inner vessel with a material present in a precursor gas provided from the precursor gas source by directing the precursor gas through an annular region disposed between the inner vessel and the outer vessel and through the porous plate into the inner vessel;
- wherein the controlling the system to coat the metallic powder particulates includes coating the metallic powder particulates with the material in an amount such that the coated metallic powder particulates have a level of reflectivity that is acceptable for subsequent processing of the coated metallic powder particulates within an additive manufacturing process.
2 more elements
A method comprising:
- providing a fluidizing reactor comprising an outer vessel and an inner vessel entirely disposed within the outer vessel, the inner vessel comprising a porous plate forming a portion of the inner vessel;
- disposing an amount of metallic powder particulates within the inner vessel;
- heating a working gas with a heat source disposed within the outer vessel and subsequently directing the heated working gas into the inner vessel for heating the metallic powder particulates;
- and
- coating the metallic powder particulates disposed within the inner vessel with a material present within a precursor gas;
- wherein the working gas and the precursor gas enter the outer vessel via an inlet, pass between the inner vessel and the outer vessel in an annular region defined between the inner vessel and the outer vessel, and enter the inner vessel via the porous plate.
3 more elements
Dependencies are inferred from the claim text.