Plasma surface treatment using dielectric barrier discharges
AssigneeTekna Plasma Systems Inc.
InventorsMaher I. Boulos, Ulrich Kogelschatz, Christine Nessim
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Abstract
A process for the in-flight surface treatment of powders using a Dielectric Barrier Discharge Torch operating at atmospheric pressures or soft vacuum conditions is described herein. The process comprising feeding a powder material into the Dielectric Barrier Discharge Torch yielding powder particles exhibiting a reduced powder agglomeration feature; in-flight modifying the surface properties of the particles; and collecting coated powder particles. An apparatus for surface treating micro- and nanoparticles comprising a Dielectric Barrier Discharge Torch operating at atmospheric pressure or soft vacuum conditions is also described herein.
Claims9
A process for surface treating powder particles comprising:
- a) feeding a particulate powder material into a Dielectric Barrier Discharge Torch assembly comprising an upstream shell-type electrode and a downstream shell-type electrode, each shell-type electrode comprising a pair of semi-cylindrical electrodes, wherein the downstream shell-type electrode is disposed in a staggered configuration relative to the upstream shell-type electrode;
- b) in-flight modifying the surface properties of the particles in the Dielectric Barrier Discharge Torch assembly producing surface treated particles;
- and
- c) collecting the surface treated particles.
Dependencies are inferred from the claim text.