TY - JOUR N2 - In the present work, different Cu-alloyed model ductile irons with ferritic (0%Cu-0.09%Mn), mixed ferritic-pearlitic (0.38%Cu-0.40%Mn) and pearlitic (0.69%Cu-0.63%Mn) microstructure were produced and analyzed in terms of their electrochemical corrosion behavior in a 3.5wt.%NaCl aqueous solution containing naturally dissolved oxygen at room temperature (25°C). The remaining elements such as Si and Mg were kept at balanced levels in an attempt to minimize variations in graphite size and distribution among different samples. The corrosion resistance was evaluated by electrochemical impedance spectroscopy and potentiodynamic polarization. Microstructure analysis of the cast alloys confirmed similarity in the graphite morphology among the different cast samples and the expected variations in the metallic matrix. In the absence of passivation, it was found that the addition of copper led to an increase in corrosion resistance, which could be attested by higher values polarization resistance and corrosion potential. L1 - http://journals.pan.pl/Content/114692/PDF/AFE%202_2020_04.pdf L2 - http://journals.pan.pl/Content/114692 PY - 2020 IS - No 2 EP - 30 DO - 10.24425/afe.2020.131297 KW - Environment protection KW - Metallography KW - Ductile Iron KW - Corrosion KW - Copper A1 - Brito, P. A1 - Pereira, W. A1 - Santos, W. A1 - Gomes, H. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol. 20 DA - 2020.02.18 T1 - Electrochemical Corrosion Evaluation of Copper-Alloyed Ductile Cast Irons SP - 26 UR - http://journals.pan.pl/dlibra/publication/edition/114692 T2 - Archives of Foundry Engineering ER -