This work presents and analyzes experimental results on the measurement of interfacial tension between liquid bismuth and melts of sodium chloride, bromide, or iodide over a wide range of applied voltages. In the anodic polarization region, a critical potential was found above which the two-phase system loses mechanical stability. It is shown that the observed phenomenon is associated with the transition of the system to a film-wetting regime on the surface. The magnitude of the critical wetting potential decreases with increasing polarizability of the anion in the salt phase. Near the critical potential, a quadratic dependence of the wetting index on the applied voltage is observed.
V.P. Stepanov (Wed,) studied this question.