IOSR Journal Of Applied Physics (IOSR-JAP) e-ISSN: 2278-4861.Volume 12, Issue 5 Ser. III (Sep. – Oct 2020), PP 19-26 www.Iosrjournals.Org DOI: 10.9790/4861-1205031926 www.iosrjournals.org 19 | Page Zinc Biodegradable Materials – Preparation and Characterization Dr. Moustfa Mohamed Hassan Eshtewi, Dr. Hamed Mohamed Abubaker Malek, Department of Physics Faculty of Science,Sirt University,Libya Department of Physics Faculty of Science,Sebha University,Libya Abstract: In medical science zinc based materials are biodegradable materials and it has possible alternative of corrosion less resistant magnesium based materials. Zinc powders with two different particle sizes (7.5μm and 150μm) were processed by the methods of powder metallurgy. The micro structure of prepared materials was evaluated in terms of light optical microscopy, and the mechanical properties were analyzed with Vickers micro hardness testing and three-point bend testing. Fractographic (study of the fracture surfaces of materials) analysis of broken samples was performed with scanning electron microscopy. Particle size was shown to have a proper effect on compacts mechanical properties. The deformability of 7.5 μm particle size powders was improved by increased temperature during the processing, while in the case of larger powder, no proper effect of temperature was observed. Bending properties of prepared materials were positively affected by elevated temperature during processing and correspond to the increasing compacting pressures. Better properties were achieved for pure zinc prepared from 150 μm particle size powder compared to materials prepared from 7.5 μm particle size powder. --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 03-10-2020 Date of Acceptance: 17-10-2020 --------------------------------------------------------------------------------------------------------------------------------------- I. Introduction In the area of biodegradable metal materials, magnesium and its alloys are the most studied. Due to their suitable mechanical properties such as high specific strength, stiffness and damping ability, they are suitable materials for the preparation of bone implants. Because of its low corrosion resistance and therefore difficult degradation control, magnesium is not used in its pure state, but alloyed. Commercial magnesium alloys are not primarily designed for medical applications, but some studies on the biomedical purpose of these alloys were done before, showing good corrosion behavior and biocompatibility. For medical purposes, magnesium alloys with calcium, zinc, rare earth elements or manganese are being considered. Due to the low density of calcium, these alloys have a similar density as a natural bone. In addition, Ca2+ ions are useful for human bones, and Mg2+ ions support the function of Ca2+ ions and generally the treatment of injury. Zinc has been considered, in the field of biomedical applications, a suitable alloying element for magnesium alloys in terms of improving corrosion resistance and enhancement of mechanical properties. In human body approximately 85% of Zn in the human body can be found in bone and muscle. It is an integral part of the structure of macromolecules and enzymes, and it participates in a large number of enzymatic reactions. The human zinc requirement for adult males is 10–15 mg/day (upper limit 40 mg/day). The potential for systemic toxicity of metallic zinc should be nonexistent due to the rapid transport of ionic zinc in living tissue. Moreover, higher consumption (up to 100 mg/day) of zinc is considered non-toxic. However, more