A detailed study of the characteristics of vibratory and air agitation
including cathode reciprocation methods for electrodeposition
processes and their application for plating of composites and printed
circuit boards has been carried out. In tanks agitated by air bubbles, it was found that the enhancing
effect of air bubbles on the mass transfer coefficient is a function
of the gas voidage fraction, irrespective of the absolute values of
the liquid flow velocity, the gas flow rate and the gas distributor
A sensor based on limiting current density characteristics of a wire
tip electrode has been shown to be capable of measuring local
variations of agitation and its effect on coating thickness variations
during electrodeposition. The effectiveness of agitation is expressed
as an enhancement factor.
Doctoral Thesis. Submitted in partial fulfillment of the requirements for the award of Doctor of Philosophy of Loughborough University.