Method for the densification and spheroidization of solid and solution precursor droplets of materials using microwave generated plasma processing
AssigneeAmastan Technologies LLC
InventorsKamal Hadidi, Makhlouf Redjdal
Life of this patent
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Abstract
A method for processing feed material to produce dense and spheroidal products is described. The feed material is comprised of powder particles from the spray-drying technique or solution precursor droplets from ceramic or metallic materials. The feed material is processed using plasma generated from a microwave. The microwave plasma torch employed is capable of generating laminar flow during processing which allows for the production of spheroidal particles with a homogenous materials distribution. This results in products having improved thermal properties, improved corrosion and wear resistance and a higher tolerance to interface stresses.
Claims11
A method of producing spheroidal and dense powder products which comprises:
- introducing feed material through a materials feeder into a microwave plasma torch;
- entraining said feed material using an axis-symmetric laminar entrainment flow towards a microwave generated plasma;
- guiding said feed material towards the microwave generated plasma using an axis-symmetric laminar cooling flow;
- processing said feed material by exposing it to a uniform temperature profile within the microwave generated plasma;
- quenching plasma exhaust of said microwave generated plasma;
- filtering the exhaust gas of said microwave generated plasma;
- and
- extracting powder products from said filtered exhaust gas.
Dependencies are inferred from the claim text.