A New Mechanism and Its Experimental Proof for the Effect of Bath Additives on Current Density Distribution During Metal Deposition on Rough Cathodes . Ein Neuer Mechanismus des Einflusses von Badzusaetzen Auf die Stromdichteverteiluang bei der Metallabscheidung Auf Rauhen Kathoden und Seine Experimentelle Begruendung

摘要

A dynamic surface deposition model is formulated and used to determine the effects of additives in acid copper sulfate electrolytes on the smoothing capacity in cathodic electrodeposition. It is shown that increased deposition velocities in surface depressions result from higher surface concentrations of a catalytic effective adsorbing substance; deposition increases with pit smoothing are thus explained by geometric surface reductions during metal deposition controlled by catalytic effective additives.