In this research, binary Mg-Zn (up to 3 wt% Zn) and ternary Mg-Zn-Gd (up to 3 wt% Gd, 3 wt% Zn) alloys were prepared by induction melting in an argon atmosphere. The structures of these alloys were characterized using light and scanning electron microscopy, energy dispersive spectrometry, X-ray diffraction and X-ray fluorescence. In addition, Brinell hardness measurements were taken to supplement these studies. Corrosion behavior was evaluated by immersion tests and potentiodynamic measurements in a physiological solution (9 g/l NaCl). Depending on the composition, structures of the as-cast alloys contained α-Mg dendrites, MgZn, Mg5Gd and Mg3Gd2Zn3 phases. Compared to pure Mg, zinc improved the corrosion resistance of binary Mg-Zn. Gadolinium also improved the corrosion resistance in the case of Mg-1Zn-3Gd alloy. The highest corrosion rate was observed for Mg-3Zn-3Gd alloy. Our results improve the understanding of the relationships between the structure and corrosion behavior of our studied alloy systems.

• MeSH
• difrakce rentgenového záření MeSH
• gadolinium chemie   MeSH
• hořčík chemie   MeSH
• koroze MeSH
• mikroskopie elektronová rastrovací MeSH
• osmolární koncentrace MeSH
• potenciometrie MeSH
• slitiny chemie   MeSH
• testování materiálů MeSH
• tvrdost MeSH
• vstřebatelné implantáty MeSH
• zinek chemie   MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• gadolinium MeSH
• hořčík MeSH
• slitiny MeSH
• zinek MeSH