Metal anodes oxidation rate forecasted by results of electrolysis

This work represented the results from electrolysis tests of low-melting cryolite-alumina melts at temperatures of 790 and 850°C using metal anodes based on Cu-Fe-Ni and Cu-Al. The duration of experiment was at least 72 h. With these results, oxide layer dissolution/erosion rate and anodic material oxidation depth was calculated in arbitrary units (alloy cm/year) with examples of extrapolated (forecasted) experimental data of oxidation depth and oxide layer thickness for a long period. The oxide layer formed on the anode surface by electrolysis of the studied materials was found to decelerate further oxidation all over the period of tests.