THE EFFECT OF NANO BIOGLASS ON THE FABRICATION OF POROUSTTANUM SCAFFOLDS

Titanium implants possess a good biocompatibility among meterials used for medical application. Bioglass have ability of hard tissue regeneration because of similarity to bone mineral phase. Beside, because this powder particles have a lower melt temperature than titanium, therefore they are used as help-sinter at powder metallurgy process, Nano Bioglass material of the type CaO-P2O5-SiO2 was obtained by the sol-gel processing method. At this work, titanium-bioglass nanocomposite composite powder mixture was uniaxially pressed at pressure of 450 MPa and sintered at 1000°C for 3h. The changes of microstructure were evaluated by scanning electron microscopy (SEM) equipped with EDAX and X-ray diffraction method (XRD). Compression tests were performed to assess mechanical properties at room temperature. The results show that ultimate phase of sintered specimens are titanium oxides mineral contain of anatase and rutile. All samples had between 23% and 28% porosity. An improved strength was achieved by addition of nano bioglass.

Keywords:

titanium , implant , nano bioglass , powder metallurgy