Iron and nickel interaction with borate melts

Intermetallic compounds, produced on the surface of iron or nickel under their interaction with borax melt in the presence of aluminium at 900 deg C, are considered using x ray phase analysis method. The results are compared to the data of studying the emf of a galvanic element, one of its electrodes being iron or nickel. It is shown that introduction of 3 mas.% of Al to a borate melt leads to a substantial change of the galvanic element emf, which can be linked with the change of the character of processes in a transitional layer. 12 refs.; 2 figs.; 1 tab