Abstract
Transient electrical interactions at targets undergoing electrostatic coating can determine both mass-transfer efficiency and reliability of the process. As various arrays of targets were traversed by a 4 mC/kg spray cloud of conductive liquid, the charged-droplet-driving space-charge field and the resultant deposition were evaluated for varying conditions of target shielding, corona activity, and target RC characteristics. Experiments confirm that electrical shielding of interior sites and induced corona detrimentally limit electrodeposition. For target capacitance values typical of coated objects, and over a wide 0 – 12 ohm range of target grounding resistance values, electrodeposition benefit was not significantly diminished.
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