In this study porous barium Titanate was used as the basic structure of a new bone graft composite. Barium Titanate Nano powder prepared with the sol-gel method. BT ceramic was foamed via a direct foaming method using polyurethane spray foam. It was then coated with Hydroxyapatite .The related HA is produced with sol-gel method. After preparing the BT porous samples with HA coating, the samples were polarized. Then the samples were immersed in SBF solution for a period of one month. The porous structure was modeled in a commercial finite element package with crushable foam material model. Using TEM micrographs of Barium Titanate powder and XRD pattern of the coating, the grain size of the prepared powder and crystallite size of the HA coating was estimated to be less than100 nm. The results of bioactive tests with SEM images of the soaked samples show that after one month of immersing the material samples in SBF, bone like apatite was significantly mineralized on the coated samples. It was concluded that bioactive foam could be obtained. The observations indicate that in polarized samples, Ca-P mineralized more that in non-polarized ones. Also in under stress samples, Ca-P mineralized more than in compared with the samples without stress. Also the theoretical results gained from modeling the uniaxial compression test in the finite element software demonstrate a reasonable correspondence with the experimental data. Keywords: Barium Titanate, Hydroxyapatite, Nano structural coating, piezoelelctric ceramic, crushable foam.
