Abstract
The density of electrodeposited nuclei had remarkable effects on the brightness and corrosion resistance of electroplated products.
At first, the effects of the conditions of electroplating on the number of electrodeposited nuclei were investigated on the buffed cold rolled steel plate from stannous sulfate bath. It was found that the number of nuclei increased with the increase of current density, with the decrease of the concentration of stannous ion, with the depression of bath temperature, and with the increase of the concentration of sulfuric acid. Howewer, no effects of the distance between electrodes were observed in the range of 3.5-5cm.
In the double electrodeposition test, it was found that the thin layer of the primary deposit had deep effects on the brightness and corrosion resistance of the secondary deposit.
