The fabrication of a hydroxyapatite composite dispersed with Ti as a secondary phase was attempted. Hydroxyapatite/Ti composites were sintered either by pulse electric current sintering, PECS, or a hot-pressing method at various temperatures. The microstructure of hydroxyapatite/Ti composite was observed by scanning electron microscopy. Some mechanical properties and biological evaluation were performed. According to the biocompatibility results of these hydroxyapatite/Ti composites in an simulated body fluid (SBF) solution, hydroxyapatite-like crystals could be formed on the surface of these composites. The analysis of the microstructure of these composites and the relation between their microstructure and some properties were investigated.

Keywords: Hydroxyapatite, Composites, Titanium, Microstructure, Biocompatibility