A system capable of depositing a matrix film containing a low amount of impurities (e.g. neutral particles) is provided. The system includes: a first plate electrode 120 having an attachment surface on which a sample plate P is to be attached; a second plate electrode 130 arranged so as to face the attachment surface; a nozzle 110 for spraying a liquid containing a matrix substance into the space between the two electrodes 120 and 130 by an electrospray method, the nozzle 110 arranged so that none of the electrodes 120 and 130 lies on the central axis A of a spray flow of the liquid; and an electric field creator 140 for creating, between the two electrodes 120 and 130, an electric field for forcing electrically charged droplets contained in the spray flow of the liquid containing the matrix substance to move toward the attachment surface.

A coating apparatus can include a spray applicator configured to discharge a coating material toward a surface of a workpiece, wherein the spray applicator includes an air shaping orifice, and wherein the spray applicator is configured to generate an electric field between the spray applicator and the workpiece, and a positioning system configured to adjust a position of the spray applicator relative to the surface of the workpiece. It can further include a control system configured to regulate operation of the spray applicator and/or the positioning system to: maintain the spray applicator within a coating distance, maintain a flow rate of shaping air through the air shaping orifice, and maintain an electrical potential of the electric field.

The invention relates to a method for controlling an electrostatic atomizer for liquids, the atomizer comprising a liquid tank and a delivery device for liquid from the liquid tank, a high-voltage source and also at least one atomizer nozzle for the atomization of liquid, the at least one atomizer nozzle being connected to the high-voltage source. Here, the voltage and/or the current intensity at at least one of the atomizer nozzles are detected by sensors of control electronics and/or the voltage and/or the current intensity at the high-voltage source are detected by sensors of the control electronics.

A method and system for powder coating non electrically conductive elements, preferably brake pads. A pre-treatment station is upstream of an electrostatic powder coating deposition station and a baking station for melting and polymerizing the powder coating in order to form a coating layer on a surface to be coated. The pre-treatment station causes the elements to be coated to conduct electrically by uniformly wetting said elements by means of creating poorly mineralized water covalent bonds on at least one surface to be coated, in an amount aimed at producing a measurable weight increase in the non electrically conductive elements, which then causes them to conduct electrically. The water adsorbed and/or deposited is subsequently eliminated within the baking station.

An electrostatic spray device includes an electrostatic mixing chamber and an electrode pair in the electrostatic mixing chamber. The electrostatic mixing chamber receives an airflow that is driven by a fan of the electrostatic spray device. The electrostatic mixing chamber also receives a flow of fluid from a reservoir of the electrostatic spray device. The electrode pair is configured to apply electrostatic charge to droplets of the fluid suspended in the airflow. A voltage level of the electrostatic charge is adjustable responsive to a first DC output from a first DC convertor. A flow volume of the fluid from the reservoir is adjustable responsive to a second DC output from a second DC convertor. In some cases, a control unit of the electrostatic mixing device modifies the first or second DC outputs based on a target level of the voltage level or the flow volume.

A voltage application device includes a voltage application circuit. The voltage application circuit applies application voltage between discharge electrode and counter electrode which face each other with a clearance left from each other to generate a discharge. The voltage application device forms discharge path partially and dielectrically broken between discharge electrode and counter electrode when a discharge is generated. Discharge path includes first dielectric breakdown region formed around discharge electrode, and second dielectric breakdown region formed around counter electrode.

An electrostatic oiling system for use with single blanks in batch systems having an open spray chamber without the need for a negative vacuum chamber. Further, the provided electrostatic oiling system may utilize induction beams and a charge wall that allows for utilization of a smaller vacuum system. Further, the provided electrostatic oiling system may provide variable blank coverage without the need for metered pumps.

An electrostatic spray nozzle assembly is described that includes an induction ring and a fluid tip. The induction ring generates an electrical field for inducing an electrical charge on droplets of a feedstock liquid from the fluid tip that pass through an opening of the induction ring. The induction ring is electrically coupled to an electrical induction field source via a first conductive path provided by conductive surfaces of: a nozzle head holding the induction ring, and a purge gas tube holding the nozzle head. Feedstock flowing through the fluid tip is electrically coupled to a charge carrier source via a second conductive path provided by at least a conductive surface of a fluid tube coupled to the fluid tip. The first conductive path and the second conductive path are electrically isolated by an insulating barrier.

A brewer includes: a nozzle configured to dispense a stream of water downward; a holder configured to hold a container for coffee grinds or tea below the nozzle to receive the stream of water; a first electrode disposed adjacent to the stream of water dispensed by the nozzle; a voltage source electrically coupled to the first electrode through an electrical circuit and configured to apply a voltage to the first electrode; and a controller communicatively coupled to the electrical circuit and configured to control a magnitude of the voltage applied to the first electrode from the voltage source. Varying the magnitude of the voltage applied to the first electrode generates an electrical field that changes a distance of the stream of water from the first electrode.

Disclosed herein is a process for coating a component, comprising applying a bond coat on a substrate of a component; applying a thermal barrier material to the bond coat; and applying a coating containing polynuclear aluminum oxide/hydroxide clusters, to the thermal barrier material. Disclosed herein too is a gas turbine engine component, comprising a superalloy substrate; a bond coat on the substrate; a thermal barrier material on the bond coat; and a coating containing polynuclear aluminum oxide/hydroxide clusters on the thermal barrier material.