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Magnesium and calcium phosphates composites are promising biomaterials to create biodegradable load-bearing implants for bone regeneration.The present investigation is focused on the design of an interpenetrated magnesiumtricalcium phosphate(Mg-TCP) composite and its evaluation under immersion test.In the study,TCP porous preforms were fabricated by robocasting to have a prefect control of porosity and pore size and later infiltrated with pure commercial Mg through current-assisted metal infiltration(CAMI) technique.The microstructure,composition,distribution of phases and degradation of the composite under physiological simulated conditions were analysed by scanning electron microscopy,elemental chemical analysis and X-ray diffraction.The results revealed that robocast TCP preforms were full infiltrated by magnesium through CAMI,even small pores below 2 um have been filled with Mg,giving to the composite a good interpenetration.The degradation rate of the Mg-TCP composite displays lower value compared to the one of pure Mg during the first 24 h of immersion test.
Magnesium and calcium phosphates composites are promising biomaterials to create biodegradable load-bearing implants for bone regeneration. The present investigation is focused on the design of an interpenetrated magnesiumtricalcium phosphate (Mg-TCP) composite and its evaluation under immersion test. In the study, TCP porous preforms were fabricated by robocasting to have a prefect control of porosity and pore size and later infiltrated with pure commercial Mg through current-assisted metal infiltration (CAMI) technique. microstructure, composition, distribution of phases and degradation of the composite conditions were analysed by scanning electron microscopy, elemental chemical analysis and X-ray diffraction. The results revealed that robocast TCP preforms were full infiltrated by magnesium through CAMI, even small pores below 2 um have been filled with Mg, giving to the composite a good interpenetration. degradation rate of the Mg-TCP composite displays low er value compared to the one of pure Mg during the first 24 h of immersion test.