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US 7,126,081 B2Granted
Radial pulsed arc discharge gun for synthesizing nanopowders
AssigneeNanotechnologies, Inc.
InventorsKurt A. Schroder, Doug K. Jackson
Life of this patent
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Abstract
A system and method for synthesizing nanopowder which provides for precursor material ablation from two opposing electrodes that are spaced apart within a gaseous atmosphere, where a plasma is created by a high power pulsed electrical discharge between the electrodes, such pulse being of short duration to inertially confine the plasma, thereby creating a high temperature and high density plasma having high quench and/or reaction rates with the gaseous atmosphere for improved nanopowder synthesis.
Claims19
An apparatus for synthesizing nanopowders, which comprises:
- a first hollow ablative body composed of a first precursor material and having a first outer diameter, and further having a first axial bore of a second diameter;
- an anode electrode of a second precursor material having a third diameter smaller than said second diameter, and fitted within said first axial bore but electrically isolated from said first hollow ablative body;
- a second hollow ablative body composed of a third precursor material and having a fourth outer diameter, and further having a second axial bore of a fifth diameter;
- a cathode electrode of a fourth precursor material having a sixth diameter and fitted within said second axial bore but electrically isolated from said second hollow ablative body, and wherein said first hollow ablative body and said second hollow ablative body are spaced apart in a gaseous atmosphere;
- and
- a power supply which is in electrical communication with said anode electrode and said cathode electrode, and which effects a high power pulsed electrical discharge to ablate said first hollow ablative body and said second hollow ablative body to produce said nanopowders.
3 more elements
Dependencies are inferred from the claim text.