Development and Characterization of Zn(98−x).Mg2.(SiC)x Composites Synthesized in Graphite Packed Non-oxidizing Media

Abstract

Zinc-based composites have diverse areas of applications; in this context, Zn-Mg-based composite Zn(98−x).Mg2.(SiC)x (x = 0, 2, 4, 6 and 8 wt.%) was synthesized by sintering in non-oxidizing graphite packed media, which can be used as a degradable orthopedic implant. The assessment of mechanical properties, corrosion behavior and localized discharge of zinc ions in simulated body fluid after a certain interval of time was done. The results acquired from various investigations reveal that the composite with Zn92.Mg2.(SiC)6 has a maximum compressive strength of 106 MPa, flexural strength 92 MPa, hardness 55.48 VHN and Young’s modulus 50.353 GPa. The strengthening of the composites was enhanced because of the strain hardening effect of the reinforced SiC particles, which hinders the movement of the dislocations. Surface characteristics and phases evolved in the composite were analyzed by SEM and XRD Technique. © 2021, ASM International.