부산대학교 도서관

The effects of BaZr0.1Ti0.9O3 (BZT) addition on dielectric and piezoelectric properties of calcium phosphate glass (CPG) were investigated. The BaZr0.1Ti0.9O3-40CaO-45P2O5-15Na2O glass was prepared by the conventional melt quenching technique. This study has been carried out in the formula of (1-x) CPG-xBZT where x = 0.00-0.40. Then powder was compacted and sintered at various temperatures. The structural properties were characterized by X-ray diffraction (XRD). From the XRD result, BZT (JCDPS file no. 031-0019), β-Ca2P2O7 (JCDPS file no. 03-0604), and NaPO3 (JCDPS file no. 011-0650) were found to precipitate in all glass ceramics. The amount of the BZT phase was found to increase with an increasing BZT content. It was found that the dielectric, piezoelectric, and also the microhardness properties of the glass ceramics could be enhanced by the addition of BZT. The glass ceramics had good bioactivity except for the glass ceramic sample with x = 0.2, which showed no evidence of apatite growth in simulated body fluid for 7 days. Piezoelectric bioglass may be of particular interest in the development of biomaterials for repairing bone defects by regeneration of bone and support of cellular growth. [ABSTRACT FROM AUTHOR]