The aim of this paper was to analyze the impact of varying zirconium additions (0.05; 0.10;
0.15 and 0.20 wt. % Zr) on corrosion behavior of the AlSi5Cu2Mg aluminum alloy. Potentiodynamic
polarization corrosion tests in 3.5 % NaCl solution demonstrated that the addition of Zr improved the
thermodynamic corrosion stability of the AlSi5Cu2Mg alloy by shifting the corrosion potential to more
positive values for all as-cast samples. The addition of Zr to the as-cast alloys also improved corrosion
kinetics by lowering the corrosion current density.
