Microstructures and Mechanical Study of Mg Alloy Foam Based on Mg-Zn-Ca-CaCO₃ System

Surface Modifications of Biodegradable Metallic Foams for Medical Applications

“…Besides, the porous structure can be partially closed and partially open. Porous materials with a large volume of porosity are commonly termed foams or cellular solids [4,29,37]. Several methods have been developed for the fabrication of porous biomaterials, including plasma spraying, sintering of metal powders, injection of gases or the addition of gas-releasing blowing agents to metal melt, utilization of space holders, 3D-printing, pressure less microwave sintering, etc.…”

“…Several methods have been developed for the fabrication of porous biomaterials, including plasma spraying, sintering of metal powders, injection of gases or the addition of gas-releasing blowing agents to metal melt, utilization of space holders, 3D-printing, pressure less microwave sintering, etc. [4,15,29,34,[49][50][51]. The preparation route significantly influences the material properties.…”

“…The infiltration casting method is routinely used to fabricate porous Mg-based and Zn-based structures [25,[54][55][56]. Foaming with blowing agents and the Gasar process are very common manufacturing techniques for porous Mg and Mg alloys [5,29,30,51,57]. Also, spark plasma sintering was successfully used to produce Mg porous materials via the space holder method using sodium chloride particles and crystalline carbamide powder [58] and Zn porous materials using a low compacting pressure [59].…”

“…A majority of the available research studies in the field of absorbable medical implant materials have been accomplished using magnesium-based materials because they possess good biocompatibility and mechanical properties in the range of human bones [5,7,12,13,15,17,18,21,22,25,28,29]. Moreover, they exhibit excellent osteoconductivity and bone growth stimulation [5,10,30,31].…”

Microstructure and Mechanical Properties of Metal Foams Fabricated via Melt Foaming and Powder Metallurgy Technique: A Review

“…The effectiveness of the melt foaming of the Al alloy is highly dependent on the decomposition properties of TiH 2 [ 117 ]. Mg alloys foams were fabricated by the melt processing method using CaCO 3 , TiH 2 , or MgH 2 powders as blowing agents, which release gas during decomposition and gradually foam the magnesium alloy melt [ 118 , 119 , 120 ]. Various additives, such as SiC, carbon, and calcium particles were added to the melt to increase its viscosity [ 121 ].…”