DEVICE AND METHOD FOR DETERMINING AT LEAST AN INTERFACE CHARACTERISTIC BETWEEN TWO PHASES OF AN ELECTRICITY CONDUCTING MATERIAL

摘要

The invention concerns a device for characterising an interface between two phases of an electricity conducting material sample comprising: means (110, 121, 122, 123, 130, 132, 152) for measuring the electric impedance of a load comprising said sample (10) and means for calculating (150) a characteristic of said interface based on at least an impedance measurement. The invention is characterised in that the impedance measuring means comprise means (110, 210) for delivering to the load at least an excitation voltage having different frequencies and means (140, 150) for determining the impedance values respectively on the basis of the excitation voltage frequencies.