TY - JOUR
T1 - Corrosion Resistance of ZK40 Magnesium Alloys Modified with Individual Rare Earth Elements and Calcium Oxide Addition
AU - Buzolin, Ricardo Henrique
AU - Mohedano, Marta
AU - Blawert, Carsten
AU - Mendis, Chamini Lakshi
AU - Pinto, Haroldo Cavalcanti
AU - Hort, Norbert
PY - 2020
Y1 - 2020
N2 - The effect of individual additions of calcium oxide (CaO), Gd, Nd and Y was investigated on the microstructure and corrosion resistance of the as-cast ZK40 alloy. The microstructural features were analysed using scanning electron microscopy. Electrochemical Impedance Spectroscopy, hydrogen evolution and weight loss under immersion in 0.5 wt.% NaCl solution were used to evaluate the corrosion behaviour. The corrosion behaviour was enhanced with the addition of CaO and Gd. The addition of Nd is detrimental to the corrosion resistance of the ZK40. More general corrosion is observed for the ZK40-CaO, while severe localised corrosion occurs for the ZK40-Nd.
AB - The effect of individual additions of calcium oxide (CaO), Gd, Nd and Y was investigated on the microstructure and corrosion resistance of the as-cast ZK40 alloy. The microstructural features were analysed using scanning electron microscopy. Electrochemical Impedance Spectroscopy, hydrogen evolution and weight loss under immersion in 0.5 wt.% NaCl solution were used to evaluate the corrosion behaviour. The corrosion behaviour was enhanced with the addition of CaO and Gd. The addition of Nd is detrimental to the corrosion resistance of the ZK40. More general corrosion is observed for the ZK40-CaO, while severe localised corrosion occurs for the ZK40-Nd.
UR - https://sociemat.es/revista-material-es/
M3 - Article
SN - 2530-6405
VL - 4
SP - 48
EP - 51
JO - Material-ES
JF - Material-ES
IS - 3
ER -