Abstract
In the present study, potentiostatic titration with the following electrochemical cell was carried out until the steady current was confirmed in the temperature range of 980°∼1130°C:
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The changes of current with time were measured and the values of log(I−Isteady) were plotted against time. The relation was nearly linear after several tens of minutes. Based on the tangent of the linear relation, the diffusivity of oxygen in molten silver was determined at four diffirent temperatures.
The diffusivity was described by the following equation, and the result was in good agreement with previous reliable data.
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