seen to govern a process for galvanic utfellning

摘要

A method for controlling a process for the electrodeposition of metals using electrolyte containing concentrations of impurities and addition agents that affect polarization, uses apparatus comprising a test cell, a sample of electrolyte, a moving cathode, an anode and a reference electrode immersed in said sample, a constant current source and potential measuring means electrically connected to the electrodes. A controlled low current sufficient to start deposition on the cathode is applied to the electrodes in the test cell and activation overpotential is measured at this current and is related to the concentration of impurities and polarization affecting agents in the sample. The processes for the purification of electrolyte and the electrodeposition of metals are subsequently adjusted in relation to the measured value of the activation overpotential to obtain optimum metal deposition.