Improving the electrochemical properties of zinc with an elevated content of iron

Aluminum, manganese, silicon, and cadmium are recommended as alloying compo nents for upgrading the current-generating efficiency of the galvanic prote ction of metal constructions with the use of anodes cast of zinc-alloy high ly contaminated with iron. The optimum content of the alloying components e nsuring the enhancement and stabilization of the principal electrochemical properties, particularly, the current-generating efficiency of iron-contain ing zinc. It is experimentally shown that an excessive content of manganese , silicon, and cadmium leads to the development of structural and electroch emical heterogeneity of alloys and, hence, to a decrease and destabilizatio n of the current-generating efficiency of the anodes.