In this work, the influence of the bath temperature on current density-anode potential curves was investigated using a potentiostat of high voltage and current (50 V, 5 A max.). The current density was found to decrease and the polishing plateau to broaden with decreasing temperatures. For purposes of obtaining a smooth and uniformly polished metal foil for study in the electron microscope, it is found advantageous to use a controlled low (sub-zero) temperature.
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Räty et al. (1966) studied this question.