Electrostatic atomisation of conducting liquids using AC superimposed on DC fields

The possibility of using electrostatic atomization to produce fine ceramic particles starting from highly conducting ceramic precursor solutions was investigated. The production of uniform droplets formed by the breakup of a permanent jet extending from the capillary nozzle was studied experimentally. To control the atomization process, an AC field was superimposed on the DC field. For given parameters of superimposed on the DC field. For given parameters of electrostatic field, capillary diameter, resistivity of the liquid, and flow rate, the jet formation and breakup process were investigated, using optical techniques. Several regimes were observed to be in synchronization with the applied potentials and frequencies. In these regimes uniform droplets were produced.<>