Abstract
The change in natural electrode potential resulting from the relative movement between the electrode and adjacent solutions was measured. Measurements were carried on mild steel, 16 per cent chromium steel, copper and aluminum in dilute acid and alkaline solutions (pH 11∼0). Mild steel electrode became more positive by motion. A 16 per cent chromium steel electrode was similar to that of mild steel in its behaviou, but the magnitude of potential change was larger than that of mild steel. Copper electrodes had a transition point of potential change. The change was more positive above the point and more negative under the point. Aluminum electrode hecame always more positive. These results were explained with the local cell theory of corrosion.
