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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2023

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Electrochemical behavior and morphology of selected sintered samples of Mg65Zn30Ca4Pr1 alloy

Hrapkowicz Bartłomiej, Lesz Sabina, Drygała Aleksandra, Karolus Małgorzata, Gołombek Klaudiusz, Babilas Rafał, Popis Julia, Gabryś Adrian, Młynarek-Żak Katarzyna, Garbiec Dariusz

Bulletin of the Polish Academy of Sciences. Technical Sciences

2023

Vol. 71, nr 3

art. no. e145564

In order to investigate the effect of the milling time on the corrosion resistance of the Mg65Zn30Ca4Pr1 alloy, powders of the alloy were prepared and milled for 13, 20, and 70 hours, respectively. The samples were sintered using spark plasma sintering (SPS) technology at 350◦C and pressure of 50 MPa. The samples were subjected to potentiodynamic immersion tests in Ringer’s solution at 37◦C. The obtained values of Ecorr were –1.36, –1.35, and –1.39 V, with polarization resistance Rp = 144, 189, and 101 Ω for samples milled for 13, 20 and 70 h, respectively. The samples morphology showed cracks and pits, thus signaling pitting corrosion.