Alumina based composites with possible medical applications

The aim of this research is processing, characterization and testing of an alumina and a bioactive component based biocomposite. The biocomposite was designed as a multicomponent material, which has improved bioactivity compared with the alumina taken separately and better mechanical properties than the chosen bioactive component. By varying the type and the distribution of the reinforcing phase inside the composite, it will be possible to obtain a large range of mechanical and biological properties and, finally to optimize the structure of the implant and its interaction with the surrounding tissue[1]. After sintering, the phase composition, the specific ceramic properties, the mechanical properties, the chemical stability and the microstructure were investigated. The values of 50-400 MPa obtained for the compressive strength (similar or grater than those of the cortical bone) [2] and the positive result of the chemical stability test in physiological serum, recommends the composite for future tests, including possibility of its employment in medical applications.