Effect of Plating Parameters on Composition of Electroless Co-Deposited PdAg Membrane

The equations for the concentration of metallic ions in the electroless plating solution have been derived. They are used to predict the effect of plating para- meters(i.e. pH, the concentration of ethylenediaminetetraacetic acid disodium salt (Na 2 EDTA) and plating temperature) on membrane composition in Pd‒Ag electroless plating theoretically. The experiments have shown that more palladium was deposited as the concentration of Na 2 EDTA and pH was increased, while the temperature was decreased.