Corrosion Behavior, Microstructure and Mechanical Properties of Novel Mg-Zn-Ca-Er Alloy for Bio-Medical Applications

In this study, the effect of calcium (Ca) and erbium (Er) on microstructure, mechanical properties, corrosion behavior magnesium-zinc alloys is reported. The were prepared using disintegrated melt deposition (DMD) technique alloying additions as Zn, Ca, Mg-Er master followed by hot extrusion. Results show that addition Er has significantly reduced grain sizes Mg-Zn also when compared to pure magnesium base material. It substantially enhanced both tensile compressive properties favoring formation MgZn2 type secondary phases are uniformly distributed during hot-extrusion. quaternary Mg-Zn-Ca-Er alloy exhibited highest strength due lower size particle strengthening influence rare earth Er. observed elongation was a result extensive twinning in alloys. Also, degradation rates have been it attributed barrier caused phases.