Investigation of the influence of vibration on the processes of porous magnesium products formation

Magnesium foam is a promising material in industry and medicine due to its low density, high damping properties, ability to absorb acoustic and electromagnetic vibrations, and biocompatibility with the human body. The methods developed for producing products from porous magnesium by filtering the liquid melt through soluble granules ensure the production of porous magnesium with a pore size of at least 4 mm. To reduce the pore size by increasing the fluidity and fillability of the granular filling during the production of porous magnesium, vibration treatment of the melt during pouring has been proposed. The conducted studies have shown that vibration treatment allows increasing the fluidity of the Mg90 magnesium melt. In addition, a refinement of the magnesium structure and an increase in hardness are observed. Vibration treatment during the pouring and forming of porous magnesium contributes to an increase in the depth of impregnation of the granular filling and creates conditions for producing products from porous magnesium with a pore size of up to 2 mm, a density of 0.55–0.75 g/cm³, and a porosity of 57–68%.