Acidic‐basic interactions in tungstate melts based on tungsten electroplating out of them

Abstract

Based on thermodynamic calculations of possible reactions of interaction between sodium tungstate and oxygen‐containing compounds of boron, carbon, phosphor, sulphur, metals of VI‐B group the probability of possible reactions was evaluated. The experimental verification of the assumptions was accomplished by the methods of potentiometry and IR‐spectroscopy. The possibility of existence of equilibrium (reversible) melted systems with the electrodes from metals of VI‐B group and their carbides was proved by the electrochemical measurements and thermodynamic calculations.