Structural and electrochemical characterization of the Ca50Mg20Cu25Zn5 amorphous alloy

(pH = 5.4) at room temperature. As suspected the lowest corrosion activity of the alloy was observed in 1% NaCl solution. The post-corrosion tests were conducted by scanning electron microscopy and energy-dispersive X-ray spectroscopy to examine the corrosion products and chemical composition of the corroded surfaces. The XPS measurements were used to better understand corrosion behavior of the alloy after immersion during the open-circuit conditions. The corrosion surface products were identified to be CaO, MgO, Mg(OH)2 and CaCO3 components. The ZnO and CuO compounds were formed on the surface of glassy samples.