Effect of Rare Earth Additives on Chrome- Plating Quality

摘要

The effect of rare earth additives used in chrome-plating on the electroplated coating behaviors of the luminosity,brightness,dispersibility of plating solution,deposition rate of ion and current efficiency were studied systemically by means of measuring cathode current at 20 and 50 deg C respectively.The results show that rare earth additives increase the luminosity and brightness of the electroplated coating,dispersibility of plating solution,deposition rate of ion and current efficiency at 50 deg C.At 20 deg C,rare earth additives only increase the current efficiency and ion deposition rate.The most effective rare earth oxides additives are Pr_6O_11 and CeO_2.