ABSTRACT
The application of porous structure in Magnesium (Mg) and its alloys is a breakthrough for Mg bone implants, which are degradable with superior mechanical strength to polymers and lower elastic modulus than ceramics. For Mg and its alloys, the bioactivity is one aspect to improve, and another aspect, the mechanical strength, should also be ameliorated. Consequently, some bioactive materials or reinforcements are added into an Mg-based matrix in order to form biocompatible composites with appropriate strength. Ti particulate-reinforced Mg materials were synthesized using the disintegrated melt deposition technique followed by hot extrusion. One of the reasons for the fast corrosion rate is the galvanic corrosion between secondary phases and the Mg matrix. Therefore, ultrafine-grained Mg alloys with uniformly distributed second phases are in desire. Mg-based metallic glassy alloys were fabricated for biomedical applications to improve the corrosion properties of crystalline Mg alloys.
