| Abstract: | Electrochemical Noise of Magnesium in Organic Solvents The electrochemical noise of the system Mg/n-C4H9OH, NaClO4 is analyzed on different conditions. The suitability of this method is to be investigated for the determination of selfdischarge of galvanic cells. Gravimetric measurements, radiometric methods and visual judgement of anode surfaces are taken for this hitherto. The long-term stability of the system without polarization up to 75 days is confirmed by constant noise amplitude and comparative EIS-measurements. The system activated by constant polarization showed a corrosive attack indicated by an increasing current noise amplitude within some hours. Finally passivation occurred after advanced destruction of the oxidic surface layer. The noise amplitude diminished. Salt deposit caused this event, corroborated by SEM shottings. Analysis of potential noise in nonaqueous electrolytes is inconclusive owing to inherent noise of used reference electrodes of 2. kind. |
