Effects of Incorporating Β-Tricalcium Phosphate with Reaction Sintering into Mg-Based Composites on Degradation and Mechanical Integrity

For applications of biodegradable load-bearing implants, we incorporated 10 or 20 vol% β-tricalcium phosphate (β-TCP) into Mg-based composites through reaction sintering in the spark plasma process. We previously reported that evolved microstructure enhanced mechanical properties before degradation and modified vitro behaviors. In this study, immersion tests physiological saline subsequent compression air were conducted to investigate effects on integrity. tests, Mg/β-TCP showed no visible disintegration sintered particles due interfacial strength by sintering. Local corrosion was observed Mg matrix adjacent products. addition, Mg/10% β-TCP dense products Mg(OH)2 compared with Mg/20% β-TCP. Those behaviors resulted reducing effective load transfer from as reinforcement. The yield decreased 18.1% for 70.9% after six days immersion. These results can give a broad view designing Mg/bioceramic consideration