|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||066 Synthesis, Shaped and Mechanical Properties of Hydroxyapatite–Anatase Biomaterials
||Roberto Nava-Miranda, Enrique Rocha, Lucia Téllez-Jurado
|On-Site Speaker (Planned)
Hydroxyapatite powder was synthesized by the precipitation technique, starting from aqueous solutions of phosphoric acid and calcium hydroxide. To the hydroxyapatite powders were added 5, 10 or 20 wt % titanium oxide as a reinforcing agent. With the powder mixture it was manufactured a paste which was extruded into a solid cylinder using a steel die. Then the extruded tubes were sintered and characterized by XRD, SEM, IR and mechanically. XRD results show that in the sintered products are present crystalline phase’s hydroxyapatite and titanium oxide in anatase form, these phases also could be identified in the infrared analysis. The biomaterial’s microstructure presents equiaxed grains with sizes smaller than 5 microns. Microhardness and fracture toughness was similar to the values of human bone reported in literature of these same properties.