Evaluation of Parameters for Magnesium Fabrication by Powder Metallurgy Route

The key benefits of magnesium and its alloys are their high biocompatibility and specific strength. Powder metallurgy is a contemporary method for the preparation of materials based on magnesium. The micro-hardness of pure magnesium (Mg) samples is evaluated in this study after they were produced through the powder metallurgy process. Magnesium powder’s purity and microstructure were examined using electron microscopy and x-ray diffractometry. The cold compaction of powdered magnesium was examined. At laboratory temperature, magnesium powder with a mean particle size of 30 µm was compressed using pressures of 400, 450, 500, 550, 600, and 650 MPa. The impact of compacting pressure was examined using %porosity and green density. It was found that a pressure of 650 MPa produced the best density of 1.715 gm/cm3 and %porosity of 1.323. The sintering process was conducted at three different temperatures (455, 525, and 585 ℃) and three different sintering time (30, 45, 60) min. It was found that 525 ℃ for 30 min produced the best results, with a density of 1.725 g/cm3, porosity of 0.75%, and micro-hardness of 97.77%.