Bipolar electrostatic deposition (bed) with cyclone and vortex flow
OwnerSungjin CHOinventor
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Abstract
The present disclosure provides a bipolar electrostatic deposition system comprising a deposition chamber configured to enclose a substrate transport path, an electrostatic generator configured to apply a controlled electrical potential to a conductive substrate, a powder supply unit configured to supply powder into the deposition chamber, at least one impeller device and at least one gas nozzle positioned within the deposition chamber and configured to generate rotational flow patterns that suspend and circulate the powder throughout the deposition chamber, and wherein the electrostatic generator charges the conductive substrate to create an electric field that electrostatically attracts the powder in the deposition chamber to the conductive substrate.
Claims20
A bipolar electrostatic deposition system, comprising:
- a deposition chamber configured to enclose a substrate transport path;
- an electrostatic generator configured to apply a controlled electrical potential to a conductive substrate;
- a powder supply unit configured to supply powder into the deposition chamber;
- at least one impeller device and at least one gas nozzle positioned within the deposition chamber and configured to generate rotational flow patterns that suspend and circulate the powder throughout the deposition chamber;
- and
- wherein the electrostatic generator charges the conductive substrate to create an electric field that electrostatically attracts the powder in the deposition chamber to the conductive substrate.
A method for forming a particulate coating on a conductive substrate, comprising:
- charging the conductive substrate to a selected electrical potential using an electrostatic generator;
- introducing powder into a deposition chamber that encloses a substrate transport path;
- generating rotational flow patterns within the deposition chamber using at least one impeller device and at least one gas nozzle to suspend and circulate the powder throughout the deposition chamber;
- and
- creating an electric field by the charged conductive substrate that electrostatically attracts the powder in the deposition chamber to the conductive substrate to cause the powder to deposit on the conductive substrate.
A particulate coated electrode produced by a process comprising:
- charging a conductive substrate to a selected electrical potential using an electrostatic generator;
- introducing powder into a deposition chamber that encloses a substrate transport path;
- generating rotational flow patterns within the deposition chamber using at least one impeller device and at least one gas nozzle to suspend and circulate the powder throughout the deposition chamber;
- and
- creating an electric field by the charged conductive substrate that electrostatically attracts the powder in the deposition chamber to the conductive substrate to cause the powder to deposit on the conductive substrate.
Dependencies are inferred from the claim text.