Potentiostatic study of aluminum conductor alloy AlV0.1 doped with lanthanum in sodium chloride solution

Abstract

The article presents the results of a potentiostatic study of the aluminum conductive alloy AlV0.1 with lanthanum in an aqueous sodium chloride solution with a concentration of 0,03; 0,3 and 3,0 wt. %, at a potential scan rate of 2 mV/s. The addition of lanthanum to the aluminum alloy AlV0.1 was 0,01–1,0 wt. %. It is shown that alloying this alloy with lanthanum reduces its corrosion rate by 10–16%, which is accompanied by a shift in electrochemical potentials toward positive values. An increase in the concentration of sodium chloride in an aqueous solution contributes to an increase in the corrosion rate of alloys regardless of their composition and a shift in electrochemical potentials in the negative direction of the ordinate axis.