Preparation and Characterization of Zinc Materials Prepared by Powder Metallurgy

Abstract

Abstract:The use of zinc-based materials as biodegradable materials for medical purposes is offered as a possible alternative to corrosion-less resistant magnesium-based materials. Zinc powders with two different particle sizes (7.5 µm and 150 µm) were processed by the methods of powder metallurgy: cold pressing, cold pressing followed by sintering and hot pressing. The microstructure of prepared materials was evaluated in terms of light optical microscopy, and the mechanical properties were analyzed with Vickers microhardness testing and three-point bend testing. Fractographic analysis of broken samples was performed with scanning electron microscopy. Particle size was shown to have a significant effect on compacts mechanical properties. The deformability of 7.5 µm particle size powder was improved by increased temperature during the processing, while in the case of larger powder, no significant influence of temperature was observed. Bending properties of prepared materials were positively influenced 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.

Zn-Mg Biodegradable Composite: Novel Material with Tailored Mechanical and Corrosion Properties

“…In this work, we selected a non-traditional way of producing a Zn-5Mg composite material by powder metallurgical methods. Although powder metallurgy is a powerful method for the production of materials with superior mechanical and corrosion properties, it has been very rarely used to prepare biodegradable Zn-based materials intended for medical devices [19,20]. However, our presented results demonstrate that this technique enables the preparation of materials with tailored mechanical and corrosion properties and improved biocompatibility.…”

Recent research and progress of biodegradable zinc alloys and composites for biomedical applications: Biomechanical and biocorrosion perspectives

“…This process can also be used for the fabrication of biodegradable Zn-based alloys [ 114 , 115 ]. The maximum density of ~95% was achieved via hot pressing (HP), a process that simultaneously applies compression and sintering of the part [ 116 , 117 ]. The effects of alloying elements, fabrication techniques, and post-thermomechanical processes on the microstructure and mechanical properties of various Zn-based alloys are tabulated in Table 5 .…”

Internal Friction Angle of Metal Powders

“…Above all, powder bed fusion (PBF), including the selective laser melting (SLM) processes and electron beam melting (EBM), is the preferred direct production option of high-quality metal parts from metal powders [1][2][3]. The characterization of input metal powder was dealt with in several studies [4][5][6]. In traditional layered methods (LM-laser melting, 3D Printing, SLS-selective laser sintering, SLM, etc.…”