Abstract
Polarization characteristics were investigated in electroless palladium-phosphorous alloy plating baths consisting of palladium chloride, ethylenediamine, thiodiglycollic acid and hypophosphite.
Experimental results confirmed the mixed potential theory including local potential-current relationships for palladium deposition. A rise in pH brought about a substantial decrease in local current for both hypophosphite oxidation and palladium deposition. The thiodiglycollic acid had no effect on local anodic and cathodic current near mixed potential.
