The Potential of Magnesium-Based Materials for Engineering and Biomedical Applications

A review on magnesium alloys for biomedical applications

“…Low density and elastic modulus Density and elastic modulus are similar to those of cortical bone Sezer et al (2018) High specific strength The strength to weight ratio is approximately 35-260 kNm/kg Seetharaman et al (2022) Machinability Mg has excellent machinability, is easy to achieve stable dimensions and can be easily processed into complex shapes Kirkland et al (2011) Stress shielding effect The elastic modulus of Mg is very close to that of bone, many problems associated with implant stress shielding can be greatly reduced…”

“…The method has the advantages of low cost, low processing temperature, and the ability to coat a variety of materials into complex shapes, which is favorable for biomedical applications (Figueira, 2020). The porous scaffolds of a few bioglasses (BGs) has been prepared by the method, such as the glass designated 58S [60 SiO 2 -36 CaO-4 P 2 O 5 (mol%)] by Sepulveda et al (2002).…”

“…The concentration of Cl − ions in the human body is about 150 mmol/L, and these Cl − will damage the Mg(OH) 2 layer and cause local corrosion defects ( Figure 1C ). The reactions as shown in Eqs 4 , 5 ( Seetharaman et al, 2022 ). …”

“…Although its corrosion in aqueous solution can be used for cathodic protection of batteries, corrosion resistance is required in structural applications. In addition, pure Mg shows low ductility and strength owing to the lack of the slip system inherent in the HCP structure, which can be improved by selecting appropriate alloying elements ( Seetharaman et al, 2022 ).…”

“…Alloy composition can change the microstructure of Mg alloys, as well as the potential difference and surface potential between phases, thereby affecting mechanical performances and corrosion resistance. The alloying elements most commonly added to Mg are aluminum (Al) and zinc (Zn), since they increase the hardness, strength, and castability ( Seetharaman et al, 2022 ). Lithium (Li) is a potential element for developing novel Mg alloys due to its low density and high solid solubility.…”